ATLAS: Risultati di Fisica e Contributi Italiani. Claudio Gatti (LNF) CSN1 - Bologna 18 Settembre 2013

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1 ATLAS: Risultati di Fisica e Contributi Italiani Claudio Gatti (LNF) CSN1 - Bologna 18 Settembre

2 Pubblicazioni ATLAS 2013 Quest'anno 54 articoli pubblicati e altri 13 sottomessi (aggiornato al 8 Settembre 2013) Group Pubblicati Sottomessi SM 12 2 TOP 5 3 Esotici 11 1 B Physics 3 1 Higgs 3 1 SUSY 12 2 Heavy Ions 3 2 Altro 5 1 Totale

3 Conf Notes ATLAS 2013 Nel 2013, 95 Conf Notes (aggiornato al 8 Settembre 2013) Group Conf Notes SM 8 TOP 8 Esotici 12 B Physics 8 Higgs 19 SUSY 26 Altro 14 Totale 95 3

4 ATLAS Italia 106 persone coinvolte nell'analisi su 212 (librone 2014) 56 Staff 29 post-doc 21 dottorandi ATLAS IT Persone coinvolte nell'analisi dati Staff/Analisi 26% Altro 50% Post-Doc/Analisi 14% Studenti PhD 10% 4

5 Attività di Analisi in Italia Sezione INFN Bologna Cosenza Genova Lecce LNF Milano Napoli Pavia Pisa Roma Roma Tor Vergata Roma Tre Udine Contributo Analisi dati Top, Luminosità, W/Z, Higgs Exotics (LLP), Higgs, Top, B, Forward Physics, W/Z Higgs, SUSY (R-hadrons), B cross section, b tagging SUSY (Stop), SM (Z/W+b), MS performance Higgs, MS performance, MET, Di-bosons SUSY (Stop), ID performance, Higgs, sezione d urto γ inclusiva, MET, tau performance Higgs, B, Higgs BSM SUSY (Stop), Di-bosons, Higgs Di-bosons, Exotics (Di-bosons), Higgs Higgs, Exotics (LLP) Higgs, Higgs SUSY, performance RPC, MS performance, F-B asymmetry Z µµ Higgs 5 SUSY, Higgs, Top

6 Contributo Italiano Gli italiani sono editors nel 13% degli articoli e delle Conf-Notes. Buona partecipazione agli Editorial Boards (ottima come chair). Sulla frazione di editors pesa sicuramente il minor numero di studenti PhD. Autori qualificati con PhD (RRB) 2014 Autori articoli 2013 Editor* articoli Editor* confnote EB** Members PhD>1 anno (PhD/Autori) IT 158 (8.7%) 221 (7.6%) 4.3% 5.1% 8.7% (chair 16 (7%) FR 143 (7.9%) 196 (11.4%) 6.3% 5.9% 10.9% 28 (14%) DE 207 (11.4%) 421 (14.4%) 11.2% 13.1% 13.9% 117 (28%) UK 186 (10.3%) 304 (10.4%) 15.5% 13.0% 11.3% 62 (20%) US 347 (19.1%) 602 (20.6%) 32.9% 30.4% 21.3% 76 (13%) 10.5%) *Editor: persona ufficialmente incaricata della redazione dell'articolo. In genere molteplici (da 3 a 7) per articolo. Non necessariamente coincidente con chi ha fatto l'analisi. 6 **Editorial Board: persone incaricate della revisione interna degli articoli.

7 Risultati Standard Model Nel articoli e 8 conf-notes 7

8 Contributo Italiano - SM Analisi in cui siamo editors di articolo o conf-note (2012/2013) γ jet W jet Sezione d'urto ZZ in 4l e 2l2ν Sezione d'urto γ inclusiva Sezione d'urto e TGC in WW e WZ in lνjj Zb e Zbb Z F-B asymmetry 8

9 γ jet Dynamics Canale molto pulito per testare pqcd s=7 TeV 2010 data L=37 pb-1 Fotoni isolati ET>45 GeV, Jet pt>40 GeV 26,000 eventi selezionati efficienza ~ 70% Fondo da multi-jet (π0 ) Fragmentation Direct photon Nucl.Phys. B 875 (2013)

10 Z F-B Asymmetry X l p Angolo di scattering misurato nel sistema di riposo dei due leptoni. Direzione del quark iniziale dedotta dal momento totale nel lungo ZLAB dei due leptoni diluizione. Alta diluizione per leptoni centrali (C) meno sensibile. Elettroni ricostruiti fino a η=4.9 (forward electrons (F)). Selezionati ~ 1,200,000 ee(cc) µµ e 350,000 ee(cf) con 4.8 fb-1 a s=7 TeV. θ CS l+ Z pzll/ pzll p (~pdf) ATLAS-CONF

11 Altri recenti risultati SM Sezione d'urto differenziale DY ad alta massa (Born). Confronto con predizioni NNLO QCD e NLO EW e con diverse PDF NNLO. arxiv: accepted by PLB La produzione di W in associazione con un adrone charmato da indicazione del contenuto di quark strano nel protone. Il rapporto R+c= σ(w+d(*)-)/σ(w-d(*)+) Può evidenziare una asimmetria tra il contenuto di quark strano e anti-strano (asimmetria~5% aspettato da processi Cabibbo-suppressed) ATLAS-CONF

12 Risultati - Top The Wilson Hall rebuilt to celebrate the top quark Nel articoli e 8 conf-notes 12

13 Contributo Italiano - Top Analisi in cui siamo editors di articolo o conf-note (2012/2013) Sezione d'urto ttbar differenziale relativa Asimmetria di carica in eventi ttbar Sezione d'urto ttbar 13

14 Top Charge Asymmetry Tevatron misura una asimmetria in eccesso di 2.5 sigma. LHC macchina pp diversa definizione dell'asimmetria. Misura con 4.7 fb-1 a s=7 TeV. Selezionate circa 60,000 eventi con 1 leptone + ETmiss + 4 jets con 1 b-tag. Contaminazione ~15% (W-jets) ATLAS-CONF

15 Top Mass ATLAS-CONF Selezionati 23,000 eventi ttbar: 1 leptone + 4 jets e almeno 1 b-tag con L=4.7 fb-1 s=7 TeV Procedura di fit per determinare simultaneamente: Mtop; JSF (Jet energy scale factor); bjsf (JSF per b-jets). 40% riduzione errore sistematico rispetto a misura in EPJC72(2012)2046. ATLAS-CONF Selezionati 2,900 eventi ttbar: 2 leptoni + 2 jets b-tagged con L=4.7 fb-1 s=7 TeV 2 neutrini Si determinare Mtop mediante un fit a mlb la media delle masse invarianti dei sistemi leptone+b-jet. 15

16 Top Mass Combinazione Massa Top ATLAS-CMS (ieri talk a Top 2013) ATLAS-CONF

17 Altri risultati - Top Sezione d'urto differenziale relativa ttbar Canale leptone+jets: 1 leptone + 4 jets con 1 b-tag, ETmiss e mt Fit cinematico per ricostruire l'evento e associare gli oggetti. Unfolding dello spettro. Spettro in pt più soft nei dati che nei generatori MC e calcoli NLO. ATLAS-CONF Ultimi risultati presentati questa settimana a Top 2013 Sezioni d'urto ttbar a 7 e 8 TeV Single Top Differenza di massa t-tbar Combinazioni ATLAS-CMS 17

18 Risultati - Esotici Nel articoli e 12 conf-notes 18

19 Contributo Italiano - Esotici Analisi in cui siamo editors di articolo o conf-note (2012/2013) Ricerche in scenari di Hidden Valley con Lepton-jets Ricerca di decadimenti di particelle in scenari Hidden Valley Altre ricerche di LLP Trigger per vertici displaced per ricerche di LLP 19

20 Electron-jets L=2 fb-1 s=7 TeV Settore nascosto: dark photons; particelle scalari stabili (n d) e non (hd,i). Segnale: 2 jet collimati di elettroni con N e 4e Ejet: Anti-kt; frazione energia EM fem; frazione energia calorimetrica associata a tracce cariche fch; frazione hit sopra soglia in TRT fht. m(gev) pp HW: alta efficienza trigger; miglior reiezione fondo (Wj). Aspettati eventi di segnale e 0.5 di fondo. Osservato 1 BR(H e-jets)<~45% New J. Phys. 15 (2013)

21 Trigger per decadimenti a grandi R r[m] 10 4 Muon RoI Cluster: MS seleziona eventi con almeno 3 RoI nel MS in R= Calorimeter Ratio: 0 sfrutta rapporto energia in Ecal e HCal HCal Trackless Jet: Tre trigger dedicati per identificare decadimenti di particelle esotiche a lunga vita media (benchmark H πvπv). Utilizzato per PRL108(2012) JINST 8 (2013) P07015 seleziona jets senza tracce associate + 1 µ ID+Cal 21

22 Risultati - Esotici Extra Dimensions Contact Interaction Heavy Gauge Bosons LeptoQuarks New Quarks Excited fermions Other 22

23 Risultati - Esotici Ricerca t'(vlq) in stato finale con leptone+(b)jets TOP PARTNERS EXTRA DIMENSIONS Esclusione mini buchi neri fino a 5 TeV in teorie large extra dimesion: pp µµx ATLAS-CONF Λ compositeness scale qq ll* llγ New J. Phys. 15 (2013) HEAVY GAUGE BOSONS COMPOSITENESS arxiv: Z' L=20 fb-1 s=8 TeV M>2.86 TeV 23 ATLAS-CONF

24 Risultati B e Quarkonium 24 Nel articoli e 8 conf-notes

25 Contributo Italiano B e Quarkonium Analisi in cui siamo editors di articolo o conf-note (2012/2013) Sezione d'urto b Bs µµ 25

26 Risultati B e Quarkonium Analisi aggiornata utilizzando tutto il dataset del 2011 pari a 4.9 fb-1. DiMuon trigger con pt>4 GeV BR misurato rispetto al B+ j/ψk+ BR(Bs µµ)< al 95% CL. ATLAS-CONF Prima osservazione di produzione associata di W e j/ψ. Sezione d'urto confrontata con il valore previsto dal modello LO Color Singlet (CSM) e NLO Color Octet (COM). ATLAS-CONF

27 Risultati - Higgs Nel articoli e 19 conf-notes 27

28 Contributo Italiano - Higgs Analisi di cui siamo editors di articolo o conf-note ( ) H ZZ 4l H ZZ llqq H WW lνlν H combinazione VH con H WW ZH con H invisibile Spin CP combinazione 28

29 Higgs Combinazione γγ: Significanza 7.4σ Combinazione dei risultati nei canali γγ ZZ e WW con 25 fb-1 raccolti a s=7 TeV e s=8 TeV arxiv: ZZ: Significanza 6.6σ WW: Significanza 3.8σ µ=1.33± 0.21 mh=125.5± 0.6 GeV 29

30 Modi di Produzione VBF: 2 jet di alto pt η>3 µ VBF tth ggf VH tth 30 VH: leptone addizionale

31 µ VBF+VH/µ ggf+tth µ ggf+tth VBF e VH sono sensibili all'accoppiamento ai bosoni di gauge. ggf e tth sono sensibili all'accoppiamento fermionico. L'estrazione di questo rapporto permette di testare la teoria in maniera model independent (ad esempio in modelli di higgs composto questo rapporto varia notevolmente.) arxiv: µ VBF+VH 31

32 Evidenza VBF Combinando i tre canali si ha una evidenza di produzione di bosoni di Higgs mediante Vector Boson Fusion pari a 3.3σ. 32

33 Altri test sugli accoppiamenti Accoppiamenti fermioni vs bosoni Rapporto W/Z Contributi BSM ai vertici γγ e gg 33

34 CP J Dati in accordo con escluso al 97.8% (ZZ) 1+ escluso al 99.97% (ZZ,WW) 1- escluso al 99.7% (ZZ,WW) 2+ escluso al 99.9% (γγ) arxiv:

35 tth con H γγ Ricerca di tth nel canale tt leptonico (singolo e di con almeno 1 b-tag) e adronico (almeno 6 jets 2 b-taggati) con L=20.3 fb-1 ATLAS-CONF

36 H BSM Ricerca di H+ τν in MSSM Ricerca H WW ad alta massa ATLAS-CONF ATLAS-CONF

37 Risultati - SUSY Nel articoli e 26 conf-notes 37

38 Contributo Italiano - SUSY Analisi di cui siamo editors di articolo o conf-note ( ) Direct stop production: stop b chargino (2 leptoni) Direct stop production: stop top neutralino (2 leptoni) Long-lived particles (R-hadrons, stau, etc.) LLP (stable sleptons) 38

39 Risultati - SUSY 1 TeV INCLUSIVE GLUINOS STOP Neutralino, Chargino LLP RPV 39

40 Risultati - SUSY Ricerca di particelle pesanti a vita media lunga, in modelli SUSY (GMSB) dove lo stau è la NLSP (particella più leggera dopo il gravitino) 15.9 fb-1 s=8 TeV Produzione diretta di coppie di sleptoni Misura di β: Dalla misura del de/dx nei Pixel Dalla misura del tempo di volo nel calorimetro Tile Dalla misura del tempo di volo con gli RPC Dalla misura del tempo di volo (t0-refit) con le MDT Stau con masse al di sotto di ~400 GeV sono escluse. ATLAS-CONF In modelli AMSB, il chargino (NLSP) è quasi degenere con il neutralino (LSP): chargino neutralino π. Vita media del chargino ~ ns. Segnale: tracce che partono dall'ip con pochi hit nel TRT fb-1 s=8 TeV Esclusi chargini in AMSB con masse < 270 GeV ATLAS-CONF

41 STOP 41

42 STOP 20.3 fb-1 s=8 TeV Produzione diretta di coppie di stop Canale di-leptonico ATLAS-CONF ATLAS-CONF

43 Conclusioni Nel 2013 circa 70 articoli e 100 conf-notes Articoli prevalentemente con statistica a 7 TeV mentre le conf-notes soprattutto a 8 TeV (in particolare le searches). La misura delle proprietà dell'higgs sicuramente il risultato più importante. Ma anche la massa del top ormai alla precisione di Tevatron. Importanti risultati anche nelle misure di precisione EW. Susy invece sempre più unnatural. Contributo italiano ad ampio spettro: SM QCD&EW; top; B; LLP; Higgs; Stop. Ottima la partecipazione negli editorial boards per la stesura degli articoli. Buona anche quella come editors di note e articoli ma risentiamo del basso numero di studenti e post-doc in proporzione agli altri paesi. 43

44 Proposte Milestones Analisi )Ricerca di vertici nello spettrometro a muoni (Roma, Cosenza) sottomissione su rivista 30/6/2014 2)Misure di sezioni d'urto differenziali ttbar (Bologna e Cosenza) sottomissione su rivista 30/6/2014 3)Update della combinazione dei diversi canali di decadimento e produzione del bosone di Higgs (Bologna, Genova, LNF, Milano, Napoli, Pisa, Roma, Roma Tor Vergata, Roma Tre, Udine) sottomissione su rivista 30/10/2014 4)Combinazione dei canali di ricerca SUSY e valutazione dei vincoli sulla teoria supersimmetrica dopo il run 1 (Lecce, Milano, Pavia, Udine) sottomissione su rivista 30/10/2014 5)Risultati preliminari H->tau tau con tutta la statistica a 8 TeV (CONF note) (Pisa e Milano) 30/6/

45 Pubblicazioni SM PUBLISHED Dynamics of isolated-photon plus jet production in pp collisions at s = 7 TeV with the ATLAS detector NPB Nucl. Phys, B 875 (2013) (Submitted: 2013/07/25) Measurement of the high-mass Drell-Yan differential cross-section in pp collisions at s = 7 TeV with the ATLAS detector PLB Accepted (Submitted: 2013/05/17) PUBLISHED Measurement of the production cross section of jets in association with a Z boson in pp collisions at s = 7 TeV with the ATLAS detector JHEP JHEP07(2013)032 (Submitted: 2013/04/26) PUBLISHED Measurement of the inclusive jet cross section in pp collisions at s = 2.76 TeV and comparison to the inclusive jet cross section at s = 7 TeV using the ATLAS detector EPJC EPJC (2013) (Submitted: 2013/04/17) PUBLISHED Measurement of the cross-section for W boson production in association with b-jets in pp collisions at s = 7 TeV with the ATLAS detector JHEP JHEP 06 (2013) 084 (Submitted: 2013/02/12) PUBLISHED Measurement of kt splitting scales in W lnu events at s = 7 TeV with the ATLAS detector EPJC Eur. Phys. J. C, 73 5 (2013) 2432 (Submitted: 2013/02/06) PUBLISHED Measurement of hard double-parton interactions in W ( lnu) + 2 jet events at s = 7 TeV with the ATLAS detector NJP New J. Phys. 15 (2013) (Submitted: 2013/01/29) PUBLISHED Measurement of angular correlations in Drell-Yan lepton pairs to probe Z/gamma* boson transverse momentum at s = 7 TeV with the ATLAS detector PLB Phys. Lett. B 720 (2013) 3251 (Submitted: 2012/11/29) PUBLISHED Measurement of ZZ production in pp collisions at s = 7 TeV and limits on anomalous ZZZ and ZZgamma couplings with the ATLAS detector JHEP JHEP03(2013)128 (Submitted: 2012/11/26) PUBLISHED Measurement of isolated-photon pair production in pp collisions at s = 7 TeV with the ATLAS detector JHEP JHEP01(2013)086 (Submitted: 2012/11/08) PUBLISHED Measurement of W+W- production in pp collisions at s = 7 TeV with the ATLAS detector and limits on anomalous WWZ and WWgamma couplings PRD Phys. Rev. D 87, (2013) (Submitted: 2012/10/10) PUBLISHED Measurement of the flavour composition of dijet events in pp collisions at s =7 TeV with the ATLAS detector EPJC Eur. Phys. J. C (2013) 73:2301 (Submitted: 2012/10/02) Measurement of jet shapes in ttbar events at s = 7 TeV using the ATLAS detector EPJC Submitted: 2013/07/22 PUBLISHED Measurements of Wgamma and Zgamma production in pp collisions at s = 7 TeV with the ATLAS detector at the LHC PRD 45 Phys. Rev. D 87, (2013) (Submitted: 2013/02/06)

46 Conf Notes SM Z to 4 lepton cross section at 7 and 8 TeV pp collisions ATLAS-CONF May2013 Measurement of the production of a W bosons in association with a charm hadron in pp collisions at s =7 TeV ATLAS-CONF May2013 "Z forward-backward asymmetry" ATLAS-CONF Apr2013 Measurement of a multijet cross section ratio and determination of the strong coupling ATLAS-CONF Apr2013 Dynamics of isolated-photon and jet production in pp collisions at s = 7 TeV with the ATLAS detector ATLAS-CONF Mar2013 Measurement of the inclusive isolated prompt photon cross section in pp collisions at s = 7 TeV with the ATLAS detector using 4.7 fb-1 ATLAS-CONF Mar2013 WZ Production Cross Section at 8 TeV ATLAS-CONF Mar2013 ZZ Production Cross Section at 8 TeV ATLAS-CONF Mar

47 Pubblicazioni TOP Measurement of top quark polarization in top-antitop events from proton-proton collisions at s = 7 TeV using the ATLAS detector PRL Submitted: 2013/07/24 Measurement of the top quark charge in pp collisions at s = 7 TeV with the ATLAS detector JHEP Submitted: 2013/07/17 A study of heavy-flavor quarks produced in association with top-quark pairs at s = 7 TeV using the ATLAS detector PRD Submitted: 2013/04/23 PUBLISHED Measurement of the tt production cross section in the tau+jets channel using the ATLAS detector EPJC Eur. Phys. J. C, 73 3 (2013) 2328 (Submitted: 2012/11/30) PUBLISHED Measurements of top quark pair relative differential cross-sections with ATLAS in pp collisions at s = 7 TeV EPJC Eur. Phys. J. C (2013) 73: 2261 (Submitted: 2012/07/24) PUBLISHED A search for ttbar resonances in the lepton plus jets final state with ATLAS using 4.7 fb-1 of pp collisions at s = 7 TeV PRD Phys. Rev. D 88, (2013) (Submitted: 2013/05/13) PUBLISHED Search for single b*-quark production with the ATLAS detector at s = 7 TeV PLB Phys. Lett. B 721 (2013) (Submitted: 2013/01/08) PUBLISHED Search for resonances decaying into top-quark pairs using fully hadronic decays in pp collisions with ATLAS at s = 7 TeV JHEP JHEP 1301 (2013) 116 (Submitted: 2012/11/09) 47

48 Conf Notes TOP Measurement of the top quark pair production charge asymmetry in proton-proton collisions at s =7 TeV using the ATLAS detector ATLAS-CONF Jul2013 Measurement of the Top Quark Mass in Dileptonic Top Quark Pair Decays with s =7 TeV ATLAS Data ATLAS-CONF Jul2013 Search for single top-quark production via FCNC in strong interactions in s = 8 TeV ATLAS data ATLAS-CONF Jul2013 Measurement of the Top Quark Mass from s = 7 TeV ATLAS Data using a 3-dimensional Template Fit ATLAS-CONF May2013 TOPLHCWG: Combination of the ATLAS and CMS measurements of W polarisation in top events (Autumn 2012) ATLAS-CONF Mar2013 "Search for CP violation in single top quark events in pp collisions at s = 7 TeV with the ATLAS detector" ATLAS-CONF Mar2013 Search for ttbar resonances in the single lepton channel at 8 TeV ATLAS-CONF May2013 Search for W' in single top using pp collisions at s = 8 TeV ATLAS-CONF May

49 Pubblicazioni Esotici Search for Microscopic Black Holes in a Like-sign Dimuon Final State using large Track Multiplicity with the ATLAS detector PRD Submitted: 2013/08/19 PUBLISHED Search for excited electrons and muons with proton-proton collisions at s =8 TeV with the ATLAS detector NJP New J. Phys. 15 (2013) (Submitted: 2013/08/06) PUBLISHED Search for heavy resonance decaying to WW or WZ in the lvjj and lvj (boosted) final states. PRD Phys. Rev. D 87, (2013) (Submitted: 2013/05/01) PUBLISHED Search for third generation scalar leptoquarks in pp collisions at s = 7 TeV with the ATLAS detector JHEP JHEP06(2013)033 (Submitted: 2013/03/03) PUBLISHED Search for extra dimensions in diphoton events using proton-proton collisions recorded at s =7 TeV with the ATLAS detector at the LHC NJP New J. Phys. 15 (2013) (Submitted: 2013/02/21) PUBLISHED Search for WH production with a light Higgs boson decaying to prompt electron-jets in proton-proton collisions at s = 7 TeV with the ATLAS detector NJP New J. Phys. 15 (2013) (Submitted: 2013/02/18) PUBLISHED Search for long-lived, multi-charged particles in pp collisions at s = 7 TeV using the ATLAS detector PLB Phys. Lett. B 722 (2013) (Submitted: 2013/01/22) PUBLISHED A Search for Prompt Lepton-Jets in pp Collisions at s = 7 TeV with the ATLAS Detector PLB Phys. Lett. B 719 (2013) (Submitted: 2012/12/21) PUBLISHED Search for new phenomena in events with three charged leptons at s = 7 TeV with the ATLAS detector PRD Phys. Rev. D 87, (2013) (Submitted: 2012/11/27) PUBLISHED Search for contact interactions and large extra dimensions in dilepton events from pp collisions at s = 7 TeV with the ATLAS detector PRD Phys. Rev. D 87, (2013) (Submitted: 2012/11/06) PUBLISHED A search for high-mass resonances decaying to tau+tau- in pp collisions at s = 7 TeV with the ATLAS detector PLB Phys. Lett. B 719 (2013) (Submitted: 2012/10/24) PUBLISHED Triggers for Displaced Decays of Long-lived Neutral Particles in the ATLAS Detector JINST JINST 8 (2013) P (Submitted: 2013/05/10)

50 Conf Notes Esotici Search for LSTC W/Z+techni-pion decay to lv/ll jj at 8 TeV ATLAS-CONF Jul2013 Search for Dark Matter in events single W and missing transverse energy using pp collisions at s = 8 TeV with the ATLAS detector ATLAS-CONF Jul2013 Search for Evidence of New Physics in Events with Three Charged Leptons at s = 8 TeV with the ATLAS Detector ATLAS-CONF Jul2013 Search for Z' to tau tau in proton-proton collisions at 8 TeV with the ATLAS detector ATLAS-CONF Jul2013 Search for new phenomena in the photon+jet events collected in proton-proton collisions at s = 8 TeV with the ATLAS detector ATLAS-CONF Jun2013 Search for type III seesaw in multileptons final state ATLAS-CONF Mar2013 Search for high-mass resonances decaying to dilepton final states in pp collisions at s = 8 TeV with the ATLAS detector ATLAS-CONF Mar2013 Search for heavy resonance decaying to WZ to lvll ATLAS-CONF Mar2013 Search for VLQ decay to WbWb in the lepton+jet channel using 8 TeV data ATLAS-CONF Jun2013 Search for pair production of a VLQ that decays into a Z and b quark or Z and t quark ATLAS-CONF Jun2013 Search for b' and 4-top production in the same-sign dilepton channel using 8 TeV data ATLAS-CONF May2013 Search for VLQ decay to Ht+X in the lepton+jet channel using 8 TeV data ATLAS-CONF Mar

51 Pubblicazioni 2013 B e Quarkonium Measurement of the differential cross section of B+ production in pp collisions at s = 7 TeV at ATLAS JHEP Accepted (Submitted: 2013/06/29) PUBLISHED Measurement of Uψlon production in 7 TeV pp collisions at ATLAS PRD Phys. Rev. D 87, (2013) (Submitted: 2012/11/30) PUBLISHED Time dependent angular analysis of the decay Bs J/ψ phi and extraction of Delta Gammas and the CPviolating weak phase phis by ATLAS JHEP JHEP 1212 (2012) 072 (Submitted: 2012/08/02) PUBLISHED Measurement of the Lambdab lifetime and mass in the ATLAS experiment PRD Phys. Rev. D 87, (2013) (Submitted: 2012/07/10) 51

52 Conf Notes B e Quarkonium Measurement of Chi_c1 and Chi_c2 production with s = 7 TeV pp collisions at ATLAS ATLAS-CONF Aug2013 Measurement of the Psi(2S) production cross section, prompt and non-prompt (b-hadron decay) components, in the channel J/ψ pi+ pi- ( mu+mu- pi+pi-) ATLAS-CONF Aug2013 Search for the decay Bs mu+mu- with the full 2011 data sample (Note: this conf-note replaces BPHY ) ATLAS-CONF Jul2013 Measurement of the αb parity violating parameter and of the helicity amplitudes in the Λb decay to J/ψ and Lambda. (This note is clone of BPHY ) ATLAS-CONF Jul2013 Measurement of the production cross-section of prompt J/Psi mesons in association with a W boson in pp collisions at s = 7 TeV ATLAS-CONF Apr2013 Time dependent and flavor tagged angular analysis of the decay Bs J/ψ phi and extraction of Delta Gammas and the CP-violating weak phase phis ATLAS-CONF Apr2013 "Study of the semi-rare decay Bd K* mu mu.analysis based on data collected in " ATLAS-CONF Apr2013 Measurement of the differential cross section of B+ production in pp collisions at s = 7 TeV at ATLAS ATLAS-CONF Mar

53 Pubblicazioni Higgs Evidence for the spin-0 nature of the Higgs boson using ATLAS data PLB Accepted (Submitted: 2013/07/04) Measurements of Higgs production and couplings using diboson final states with the ATLAS detector at the LHC PLB Accepted (Submitted: 2013/07/04) PUBLISHED Search for a light charged Higgs boson in the decay channel H+ csbar in ttbar events using pp collisions at s = 7 TeV with the ATLAS detector EPJC Eur. Phys. J. C, 73 6 (2013) 2465 (Submitted: 2013/02/15) PUBLISHED Search for charged Higgs bosons through the violation of lepton universality in ttbar events using pp collision data at s = 7 TeV with the ATLAS experiment JHEP JHEP03(2013)076 (Submitted: 2012/12/14) PUBLISHED Search for the neutral Higgs bosons of the Minimal Supersymmetric Standard Model in pp collisions at s =7 TeV with the ATLAS detector JHEP JHEP02(2013)095 (Submitted: 2012/11/29) 53

54 Conf Notes Higgs Search for charged Higgs bosons in the tau-nu final state with the ATLAS detector ATLAS-CONF Aug-2013 FCNC top decays to H(yy)c for Spring 2013 Conferences ATLAS-CONF Jul-2013 Search for tth production in the H yy channel at s = 8 TeV with the ATLAS detector ATLAS-CONF Jul-2013 Search for the Standard Model Higgs boson in the VH(bb) final state with the ATLAS detector ATLAS-CONF Jul-2013 Search for associated production of the Higgs boson in the WH WWW(*) lvlvlv and ZH ZWW(*) lllvlv channels with the ATLAS detector at the LHC ATLAS-CONF Jul-2013 Differential cross sections of the Higgs boson measured in the diphoton decay channel with the ATLAS detector using 8 TeV proton-proton collision data ATLAS-CONF Jul-2013 Search for a Heavy Higgs boson in the WW (lvlv) Channel ATLAS-CONF Jul-2013 Higgs Spin Combination for Winter 2013 ATLAS-CONF Apr-2013 Couplings Combination of Higgs Analyses ATLAS-CONF Mar-2013 Spin Properties Measurements of the Higgs-Like Particle in the lvlv Channel with the ATLAS Detector ATLAS-CONF Mar-2013 Update of the H WW* lvlv, 0,1 and 2-jets Analysis with the ATLAS Detector ATLAS-CONF Mar-2013 Higgs to Gamma Gamma, spin, for Winter 2013 (Higgs HSG1) ATLAS-CONF Mar-2013 Search for Higgs bosons in 2HDM in the WW (lvlv) channel with the ATLAS detector ATLAS-CONF Mar-2013 Mass and Overall Rate Combination of Higgs analyses ATLAS-CONF Mar-2013 H to 4l HSG2 for Winter 2013 ATLAS-CONF Mar-2013 Higgs to Gamma Gamma, mass and couplings, for Winter 2013 (Higgs HSG1) ATLAS-CONF Mar-2013 Search for ZH,H Invisible for Winter 2013 ATLAS-CONF Mar-2013 H to mumu Winter 2013 ATLAS-CONF Mar H to Zgamma for Winter 2013 (Higgs HSG1) ATLAS-CONF Mar-2013

55 Pubblicazioni SUSY Search for direct third generation squark pair production in final states with Missing Transverse Momentum and two b-jets in s = 8 TeV pp collisions with the ATLAS detector JHEP Submitted: 2013/08/12 Search for new phenomena using final states with large jet multiplicities and missing transverse momentum with ATLAS in 20 fb 1 of s = 8 TeV proton-proton collisions JHEP Submitted: 2013/08/08 PUBLISHED Search for non-pointing photons in the diphoton and ETmiss final state in s = 7 TeV pp collisions using the ATLAS detector PRD Phys. Rev. D 88, (2013) (Submitted: 2013/04/23) PUBLISHED Multi-channel search for squarks and gluinos in s = 7 TeV pp collisions with the ATLAS detector at the LHC EPJC Eur. Phys. J. C ( 2013 ) 73 (Submitted: 2012/12/26) PUBLISHED Search for a heavy narrow resonance decaying to e-mu, e-tau or mu-tau with the ATLAS detector in s =7 TeV pp collisions at the LHC PLB Phys. Lett. B 723 (2013) (Submitted: 2012/12/06) PUBLISHED Searches for heavy long-lived sleptons and R-hadrons with the ATLAS detector in pp collisions at s = 7 TeV PLB Phys. Lett. B 720 (2013) (Submitted: 2012/11/07) PUBLISHED Search for supersymmetry in events with photons, bottom quarks, and missing transverse momentum in proton-proton collisions at a centre-of-mass energy of 7 TeV with the ATLAS detector PLB Phys. Lett. B 719 (2013) (Submitted: 2012/11/06) PUBLISHED Search for long-lived, heavy particles in final states with a muon and multi-track displaced vertex in protonproton collisions at s = 7 TeV with the ATLAS detector PLB Phys. Lett. B 719 (2013) (Submitted: 2012/10/28) PUBLISHED Search for pair-produced massive coloured scalars in four-jet final states with the ATLAS detector in protonproton collisions at s=7 TeV EPJC Eur. Phys. J. C (2013) 73: 2263 (Submitted: 2012/10/17) PUBLISHED Search for direct chargino production in anomaly-mediated supersymmetry breaking models based on a disappearing-track signature in pp collisions at s = 7 TeV with the ATLAS detector JHEP JHEP01(2013)131 (Submitted: 2012/10/10) PUBLISHED Search for light top squark pair production in final states with leptons and b-jets with the ATLAS detector in s = 7 TeV proton-proton collisions PLB Phys. Lett. B 720 (2013) (Submitted: 2012/09/10) PUBLISHED Search for direct production of charginos and neutralinos in events with three leptons and missing transverse momentum in s = 7 TeV pp collisions with the ATLAS detector PLB Phys. Lett. B 718 (2013) (Submitted: 2012/08/15) PUBLISHED Search for direct slepton and gaugino production in final states with two leptons and missing transverse momentum with the ATLAS detector in pp collisions at s = 7 TeV PLB Phys. Lett. B 718 (2013) (Submitted: 2012/08/14) PUBLISHED Search for squarks and gluinos with the ATLAS detector in final states with jets and missing transverse momentum using 4.7 fb-1 of s = 7 TeV proton-proton collision data PRD Phys. Rev. D 87, (2013) (Submitted: 2012/08/04) 55

56 Conf Notes SUSY Search for gaugino pair production in events with one lepton and two b-jets ATLAS-CONF Aug2013 Search for RPV SUSY with a muon and a displaced vertex from the decay of a long-lived neutralino ATLAS-CONF Aug2013 Search for massive particles decaying into multiple jets with the ATLAS detector in s = 8 TeV pp collisions at the LHC ATLAS-CONF Aug2013 Search for long-lived charginos in events with disappearing tracks (AMSB) ATLAS-CONF Jul2013 Search for direct stop pair production with stop decaying to charm and neutralino ATLAS-CONF Jul2013 Search for direct pair production of top squarks decaying to a b-quark and a chargino or into a top quark and a neutralino in final states with two leptons in s = 8 TeV pp collisions using 20 fb-1 of ATLAS data ATLAS-CONF Jul2013 Search for supersymmetric squarks and gluinos in events with isolated leptons, jets and missing transverse momentum at s =8 TeV with the ATLAS detector ATLAS-CONF Jun2013 Search for gluino pair production in final states with MET and at least 3 b-jets ATLAS-CONF Jun2013 Searches for heavy long-lived sleptons and R-hadrons with the ATLAS detector in pp collisions at s = 8 TeV ATLAS-CONF Jun2013 Search for long-lived stopped gluino R-hadrons decaying out-of-time with LHC collisions in 2011 and 2012 using the ATLAS detector ATLAS-CONF Jun2013 Search for new phenomena using final states with large jet multiplicities and missing transverse momentum with ATLAS in 20.3 fb-1 of s =8 TeV proton-proton collisions ATLAS-CONF May2013 Search for direct third generation squark pair production in final states with Missing Transverse Momentum and two b-jets in s = 8 TeV pp collisions with the ATLAS detector ATLAS-CONF May2013 Searches for direct-slepton pair and chargino pair production in final states with two opposite-sign leptons, missing transverse momentum and a jet veto in 20 fb-1 of pp collisions at s = 8 TeV with the ATLAS detector ATLAS-CONF May

57 Conf Notes SUSY Search for direct top squark pair production in final states with two leptons in s = 8 TeV pp collisions using 20 fb-1 of ATLAS data. ATLAS-CONF May2013 Search for squarks and gluinos in events with jets and MET ATLAS-CONF May2013 Search for direct stop pair production in events with one leptons, jets and MET ATLAS-CONF Mar2013 Search for supersymmetry in events with four or more leptons and MET ATLAS-CONF Mar2013 Search for direct gaugino production in events with three or more leptons and MET ATLAS-CONF Mar2013 Search for direct slepton and gaugino production in final states with hadronic taus and missing transverse momentum with the ATLAS detector in pp collisions at s = 8 TeV ATLAS-CONF Mar2013 "Search for squarks and gluinos in events with tau leptons, jets and MET" ATLAS-CONF Mar2013 Search for direct stop pair production in events with a Z, a b-jet or lepton and MET ATLAS-CONF Mar2013 Search for direct production of the top squark in the all-hadronic tt+met final state in 21 fb-1 of pp collisions at s = 8 TeV with the ATLAS detector ATLAS-CONF Mar2013 Search for non-pointing photons in the diphoton and ETmiss final state in s = 7 TeV pp collisions using the ATLAS detector ATLAS-CONF Mar2013 Search for gluinos in events with same-sign dileptons, (b-)jets and MET ATLAS-CONF Mar2013 Search for direct stop pair production in events with missing transverse momentum and two b-jets in 12.8 fb-1 of pp collisions at s =8 TeV with the ATLAS Detector ATLAS-CONF Dec2012 Search for strongly produced supersymmetric particles in decays with two leptons at sqrts=8 TeV ATLAS-CONF Aug

58 Pubblicazioni Heavy Ions Measurement of the azimuthal angle dependence of inclusive jet yields in Pb+Pb collisions at snn=2.76 TeV with the ATLAS detector PRL Submitted: 2013/06/26 Measurement of the distributions of event-by-event flow harmonics in Pb+Pb collisions at snn = 2.76 TeV with the ATLAS detector JHEP Submitted: 2013/05/13 PUBLISHED Measurement of multi-particle azimuthal correlations in proton-lead collisions at snn = 5.02 TeV with the ATLAS detector PLB Phys. Lett. B 725 (2013), pp (Submitted: 2013/03/08) PUBLISHED Observation of associated near- and away-side long-range pseudorapidity correlations in sqrts_{nn} =5.02 TeV proton-lead collisions at the LHC with the ATLAS detector PRL Phys. Rev. Lett. 110, (2013) (Submitted: 2012/12/20) PUBLISHED Measurement of Z boson production in Pb+Pb collisions at snn=2.76tev with the ATLAS detector PRL Phys. Rev. Lett 110, (2013) (Submitted: 2012/10/24) 58

59 Altre pubblicazioni 2013 PUBLISHED Characterisation and mitigation of beam-induced backgrounds observed in the ATLAS detector during the 2011 proton-proton run JINST JINST 8 (2013) P07004 (Submitted: 2013/05/06) PUBLISHED Improved luminosity determination in pp collisions at s = 7 TeV using the ATLAS detector at the LHC EPJC Eur. Phys. J. C (2013) 73:2518 (Submitted: 2013/02/18) Performance of large-r jets and jet substructure reconstruction with the ATLAS detector at s = 7 TeV JHEP Accepted (Submitted: 2013/06/20) PUBLISHED Jet energy resolution in proton-proton collisions at s = 7 TeV recorded in 2010 with the ATLAS detector EPJC Eur. Phys. J. C, 73 3 (2013) 2306 (Submitted: 2012/10/23) PUBLISHED Single hadron response measurement and calorimeter jet energy scale uncertainty with the ATLAS detector at the LHC EPJC Eur. Phys. J. C, 73 3 (2013) 2305 (Submitted: 2012/03/06) PUBLISHED Jet energy measurement with the ATLAS detector in proton-proton collisions at s = 7 TeV EPJC Eur. Phys. J. C, 73 3 (2013) 2304 (Submitted: 2011/12/29) 59

60 Conf Notes Altro Measurement of delta rays in ATLAS silicon detectors ATLAS-CONF Jan2013 Performance and validation of Q-jets at the ATLAS detector in pp collisions at s =8 TeV in 2012 ATLAS-CONF Aug2013 Jet charge studies in ATLAS ATLAS-CONF Aug2013 Performance of pile-up subtraction for jet shapes in pp collisions at s=8 TeV ATLAS-CONF Aug2013 Performance of boosted top quark identification in 2012 ATLAS data ATLAS-CONF Aug2013 Pile-up subtraction and suppression for jets in ATLAS ATLAS-CONF Aug2013 Performance of missing transverse momentum reconstruction in ATLAS studied in proton-proton collisions recorded in 2012 at s =8 TeV ATLAS-CONF Aug2013 Jet energy scale and its systematic uncertainty in proton-proton collisions at s =7 TeV with ATLAS 2011 data ATLAS-CONF Jan2013 TeV-scale jet energy calibration using multijet events and close-by jet effects in ATLAS ATLAS-CONF Jan2013 Jet energy measurement for inclusive jets and b-quark induced jets ATLAS-CONF Jan2013 Preliminary muon reconstruction efficiency and momentum resolution with the ATLAS detector during 2012 pp collisions. ATLAS-CONF Aug

61 Conf Notes Altro Reconstruction and Identification of Hadronic Tau Decays in proton-proton collisions at s =8 TeV with the ATLAS detector at the LHC in 2012 ATLAS-CONF Jul2013 Determination of the tau energy scale and the associated systematic uncertainty in proton-proton collisions at s =8 TeV with the ATLAS detector at the LHC in 2012 ATLAS-CONF Apr2013 Performance of the ATLAS tau trigger in 2011 ATLAS-CONF Jan

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