6533b853fe1ef96bd12ad4ea

RESEARCH PRODUCT

Measurement of dielectron production in central Pb-Pb collisions at √sNN = 2.76 TeV

S. AcharyaF. T. AcostaD. AdamovaJ. AdolfssonM. M. AggarwalG. Aglieri RinellaM. AgnelloN. AgrawalZ. AhammedS. U. AhnS. AiolaA. AkindinovM. Al-turanyS. N. AlamD. S. D. AlbuquerqueD. AleksandrovB. AlessandroR. Alfaro MolinaY. AliA. AliciA. AlkinJ. AlmeT. AltL. AltenkamperI. AltsybeevM. N. AnaamC. AndreiD. AndreouH. A. AndrewsA. AndronicM. AngelettiV. AnguelovC. AnsonT. AnticicF. AntinoriP. AntonioliR. AnwarN. ApadulaL. AphecetcheH. AppelshauserS. ArcelliR. ArnaldiO. W. ArnoldI. C. ArseneM. ArslandokA. AugustinusR. AverbeckM. D. AzmiA. BadalaY. W. BaekS. BagnascoR. BailhacheR. BalaA. BaldisseriM. BallR. C. BaralA. M. BarbanoR. BarberaF. BarileL. BarioglioG. G. BarnafoldiL. S. BarnbyV. BarretP. BartaliniK. BarthE. BartschN. BastidS. BasuG. BatigneB. BatyunyaP. C. BatzingJ. L. Bazo AlbaI. G. BeardenH. BeckC. BeddaN. K. BeheraI. BelikovF. BelliniH. Bello MartinezR. BellwiedL. G. E. BeltranV. BelyaevG. BencediS. BeoleA. BercuciY. BerdnikovD. BerenyiR. A. BertensD. BerzanoL. BetevP. P. BhaduriA. BhasinI. R. BhatH. BhattB. BhattacharjeeJ. BhomA. BianchiL. BianchiN. BianchiJ. BielcikJ. BielcikovaA. BilandzicG. BiroR. BiswasS. BiswasJ. T. BlairD. BlauC. BlumeG. BocaF. BockA. BogdanovL. BoldizsarM. BombaraG. BonomiM. BonoraH. BorelA. BorissovM. BorriE. BottaC. BourjauL. BratrudP. Braun-munzingerM. BregantT. A. BrokerM. BrozE. J. BruckenE. BrunaG. E. BrunoD. BudnikovH. BueschingS. BufalinoP. BuhlerP. BuncicO. BuschZ. ButheleziJ. B. ButtJ. T. BuxtonJ. CabalaD. CaffarriH. CainesA. CalivaE. Calvo VillarR. S. CamachoP. CameriniA. A. CaponF. CarenaW. CarenaF. CarnesecchiJ. Castillo CastellanosA. J. CastroE. A. R. CasulaC. Ceballos SanchezS. ChandraB. ChangW. ChangS. ChapelandM. ChartierS. ChattopadhyayS. ChattopadhyayA. ChauvinC. CheshkovB. CheynisV. Chibante BarrosoD. D. ChinellatoS. ChoP. ChochulaT. ChowdhuryP. ChristakoglouC. H. ChristensenP. ChristiansenT. ChujoS. U. ChungC. CicaloL. CifarelliF. CindoloJ. CleymansF. ColamariaD. ColellaA. ColluM. ColocciM. ConcasG. Conesa BalbastreZ. Conesa Del ValleJ. G. ContrerasT. M. CormierY. Corrales MoralesP. CorteseM. R. CosentinoF. CostaS. CostanzaJ. CrkovskaP. CrochetE. CuautleL. CunqueiroT. DahmsA. DaineseF. P. A. DamasS. DaniM. C. DanischA. DanuD. DasI. DasS. DasA. DashS. DashS. DeA. De CaroG. De CataldoC. De ContiJ. De CuvelandA. De FalcoD. De GruttolaN. De MarcoS. De PasqualeR. D. De SouzaH. F. DegenhardtA. DeistingA. DeloffS. DelsantoC. DeplanoP. DhankherD. Di BariA. Di MauroB. Di RuzzaR. A. DiazT. DietelP. DillensegerY. DingR. DiviaO. DjuvslandA. DobrinD. Domenicis GimenezB. DonigusO. DordicL. V. R. DoremalenA. K. DubeyA. DublaL. DucrouxS. DudiA. K. DuggalM. DukhishyamP. DupieuxR. J. EhlersD. EliaE. EndressH. EngelE. EppleB. ErazmusF. ErhardtM. R. ErsdalB. EspagnonG. EulisseJ. EumD. EvansS. EvdokimovL. FabbiettiM. FagginJ. FaivreA. FantoniM. FaselL. FeldkampA. FelicielloG. FeofilovA. Fernandez TellezA. FerrettiA. FestantiV. J. G. FeuillardJ. FigielM. A. S. FigueredoS. FilchaginD. FinogeevF. M. FiondaG. FiorenzaF. FlorM. FlorisS. FoertschP. FokaS. FokinE. FragiacomoA. FrancesconA. FranciscoU. FrankenfeldG. G. FronzeU. FuchsC. FurgetA. FursM. Fusco GirardJ. J. GaardhojeM. GagliardiA. M. GagoK. GajdosovaM. GallioC. D. GalvanP. GanotiC. GarabatosE. Garcia-solisK. GargC. GargiuloP. GasikE. F. GaugerM. B. Gay DucatiM. GermainJ. GhoshP. GhoshS. K. GhoshP. GianottiP. GiubellinoP. GiubilatoP. GlasselD. M. Gomez CoralA. Gomez RamirezV. GonzalezP. Gonzalez-zamoraS. GorbunovL. GorlichS. GotovacV. GrabskiL. K. GraczykowskiK. L. GrahamL. GreinerA. GrelliC. GrigorasV. GrigorievA. GrigoryanS. GrigoryanJ. M. GronefeldF. GrosaJ. F. Grosse-oetringhausR. GrossoR. GuernaneB. GuerzoniM. GuittiereK. GulbrandsenT. GunjiA. GuptaR. GuptaI. B. GuzmanR. HaakeM. K. HabibC. HadjidakisH. HamagakiG. HamarM. HamidJ. C. HamonR. HanniganM. R. HaqueA. HarlenderovaJ. W. HarrisA. HartonH. HassanD. HatzifotiadouS. HayashiS. T. HeckelE. HellbarH. HelstrupA. HerghelegiuE. G. HernandezG. Herrera CorralF. HerrmannK. F. HetlandT. E. HildenH. HillemannsC. HillsB. HippolyteB. HohlwegerD. HorakS. HornungR. HosokawaJ. HotaP. HristovC. HuangC. HughesP. HuhnT. J. HumanicH. HushnudN. HussainT. HussainD. HutterD. S. HwangJ. P. IddonS. A. Iga BuitronR. IlkaevM. InabaM. IppolitovM. S. IslamM. IvanovV. IvanovV. IzucheevB. JacakN. JacazioP. M. JacobsM. B. JadhavS. JadlovskaJ. JadlovskyS. JaelaniC. JahnkeM. J. JakubowskaM. A. JanikC. JenaM. JercicO. JevonsR. T. Jimenez BustamanteM. JinP. G. JonesA. JuskoP. KalinakA. KalweitJ. H. KangV. KaplinS. KarA. Karasu UysalO. KaravichevT. KaravichevaP. KarczmarczykE. KarpechevU. KebschullR. KeidelD. L. D. KeijdenerM. KeilB. KetzerZ. KhabanovaA. M. KhanS. KhanS. A. KhanA. KhanzadeevY. KharlovA. KhatunA. KhuntiaM. M. KielbowiczB. KilengB. KimD. KimD. J. KimE. J. KimH. KimJ. S. KimJ. KimM. KimS. KimT. KimT. KimS. KirschI. KiselS. KiselevA. KisielJ. L. KlayC. KleinJ. KleinC. Klein-bosingS. KlewinA. KlugeM. L. KnichelA. G. KnospeC. KobdajM. KofaragoM. K. KohlerT. KolleggerN. KondratyevaE. KondratyukA. KonevskikhP. J. KonopkaM. KonyushikhinL. KoskaO. KovalenkoV. KovalenkoM. KowalskiI. KralikA. KravcakovaL. KreisM. KrivdaF. KrizekM. KrugerE. KryshenM. KrzewickiA. M. KuberaV. KuceraC. KuhnP. G. KuijerJ. KumarL. KumarS. KumarS. KunduP. KurashviliA. KurepinA. B. KurepinA. KuryakinS. KushpilJ. KvapilM. J. KweonY. KwonS. L. La PointeP. La RoccaY. S. LaiI. LakomovR. LangoyK. LapidusA. LardeuxP. LarionovE. LaudiR. LavickaR. LeaL. LeardiniS. LeeF. LehasS. LehnerJ. LehrbachR. C. LemmonI. Leon MonzonP. LevaiX. LiLi X. L.J. LienR. LietavaB. LimS. LindalV. LindenstruthS. W. LindsayC. LippmannM. A. LisaV. LitichevskyiA. LiuH. M. LjunggrenW. J. LlopeD. F. LodatoV. LoginovC. LoizidesP. LoncarX. LopezE. Lopez TorresA. LoweP. LuettigJ. R. LuhderM. LunardonG. LuparelloM. LupiA. MaevskayaM. MagerS. M. MahmoodA. MaireR. D. MajkaM. MalaevQ. W. MalikL. MalininaD. Mal'kevichP. MalzacherA. MamonovV. MankoF. MansoV. ManzariY. MaoM. MarchisoneJ. MaresG. V. MargagliottiA. MargottiJ. MarguttiA. MarinC. MarkertM. MarquardN. A. MartinP. MartinengoJ. L. MartinezM. I. MartinezG. Martinez GarciaM. Martinez PedreiraS. MasciocchiM. MaseraA. MasoniL. MassacrierE. MassonA. MastroserioA. M. MathisP. F. T. MatuokaA. MatyjaC. MayerM. MazzilliM. A. MazzoniF. MeddiY. MelikyanA. Menchaca-rochaE. MeninnoJ. Mercado PerezM. MeresS. MhlangaY. MiakeL. MichelettiM. M. MieskolainenD. L. MihaylovK. MikhaylovA. MischkeA. N. MishraD. MiskowiecJ. MitraC. M. MituN. MohammadiA. P. MohantyB. MohantyM. M. KhanD. A. Moreira De GodoyL. A. P. MorenoS. MorettoA. MorrealeA. MorschT. MrnjavacV. MucciforaE. MudnicD. MuhlheimS. MuhuriM. MukherjeeJ. D. MulliganM. G. MunhozK. MunningM. I. A. MunozR. H. MunzerH. MurakamiS. MurrayL. MusaJ. MusinskyC. J. MyersJ. W. MyrchaB. NaikR. NairB. K. NandiR. NaniaE. NappiA. NarayanM. U. NaruA. F. NassirpourH. Natal Da LuzC. NattrassS. R. NavarroK. NayakR. NayakT. K. NayakS. NazarenkoR. A. Negrao De OliveiraL. NellenS. V. NesboG. NeskovicF. NgM. NicassioJ. NiedzielaB. S. NielsenS. NikolaevS. NikulinV. NikulinF. NoferiniP. NomokonovG. NoorenJ. C. C. NorisJ. NormanA. NyaninJ. NystrandH. OhA. OhlsonJ. OleniaczA. C. Oliveira Da SilvaM. H. OliverJ. OnderwaaterC. OppedisanoR. OravaM. OravecA. Ortiz VelasquezA. OskarssonJ. OtwinowskiK. OyamaY. PachmayerV. PacikD. PaganoG. PaicP. PalniJ. PanA. K. PandeyS. PanebiancoV. PapikyanP. PareekJ. ParkJ. E. ParkkilaS. ParmarA. PassfeldS. P. PathakR. N. PatraB. PaulH. PeiT. PeitzmannX. PengL. G. PereiraH. Pereira Da CostaD. PeresunkoE. Perez LezamaV. PeskovY. PestovV. PetracekM. PetroviciC. PettaR. P. PezziS. PianoM. PiknaP. PillotL. O. D. L. PimentelO. PinazzaL. PinskyS. PisanoD. B. PiyarathnaM. PloskonM. PlaninicF. PliquettJ. PlutaS. PochybovaP. L. M. Podesta-lermaM. G. PoghosyanB. PolichtchoukN. PoljakW. PoonsawatA. PopH. PoppenborgS. Porteboeuf-houssaisV. PozdniakovS. K. PrasadR. PreghenellaF. PrinoC. A. PruneauI. PshenichnovM. PuccioV. PuninJ. PutschkeS. RahaS. RajputJ. RakA. RakotozafindrabeL. RamelloF. RamiR. RaniwalaS. RaniwalaS. S. RasanenB. T. RascanuR. RathV. RatzaI. RavasengaK. F. ReadK. RedlichA. RehmanP. ReicheltF. ReidtX. RenR. RenfordtA. ReshetinJ. -P. RevolK. ReygersV. RiabovT. RichertM. RichterP. RiedlerW. RieglerF. RiggiC. RisteaS. P. RodeM. Rodriguez CahuantziK. RoedR. RogalevE. RogochayaD. RohrD. RohrichP. S. RokitaF. RonchettiE. D. RosasK. RoslonP. RosnetA. RossiA. RotondiF. RoukoutakisC. RoyP. RoyO. V. RuedaR. RuiB. RumyantsevA. RustamovE. RyabinkinY. RyabovA. RybickiS. SaarinenS. SadhuS. SadovskyK. SafarikS. K. SahaB. SahooP. SahooR. SahooS. SahooP. K. SahuJ. SainiS. SakaiM. A. SalehS. SambyalV. SamsonovA. SandovalA. SarkarD. SarkarN. SarkarP. SarmaM. H. P. SasE. ScapparoneF. ScarlassaraB. SchaeferH. S. ScheidC. SchiauaR. SchickerC. SchmidtH. R. SchmidtM. O. SchmidtM. SchmidtN. V. SchmidtJ. SchukraftY. SchutzK. SchwarzK. SchwedaG. ScioliE. ScomparinM. SefcikJ. E. SegerY. SekiguchiD. SekihataI. SelyuzhenkovS. SenyukovE. SerradillaP. SettA. SevcencoA. ShabanovA. ShabetaiR. ShahoyanW. ShaikhA. ShangaraevA. SharmaA. SharmaM. SharmaN. SharmaA. I. SheikhK. ShigakiM. ShimomuraS. ShirinkinQ. ShouK. ShtejerY. SibiriakS. SiddhantaK. M. SielewiczT. SiemiarczukD. SilvermyrG. SimatovicG. SimonettiR. SingarajuR. SinghR. SinghV. SinghalT. SinhaB. SitarM. SittaT. B. SkaaliM. SlupeckiN. SmirnovR. J. M. SnellingsT. W. SnellmanJ. SochanC. SonccoJ. SongF. SoramelS. SorensenF. SozziI. SputowskaJ. StachelI. StanP. StankusE. StenlundD. StoccoM. M. StoretvedtP. StrmenA. A. P. SuaideT. SugitateC. SuireM. SuleymanovM. SuljicR. SultanovM. SumberaS. SumowidagdoK. SuzukiS. SwainA. SzaboI. SzarkaU. TabassamJ. TakahashiG. J. TambaveN. TanakaM. TarhiniM. TariqM. G. TarzilaA. TauroG. Tejeda MunozA. TelescaC. TerrevoliB. TeyssierD. ThakurS. ThakurD. ThomasF. ThoresenR. TieulentA. TikhonovA. R. TimminsA. ToiaN. TopilskayaM. ToppiS. R. TorresS. TripathyS. TrogoloG. TrombettaL. TroppV. TrubnikovW. H. TrzaskaT. P. TrzcinskiB. A. TrzeciakT. TsujiA. TumkinR. TurrisiT. S. TveterK. UllalandE. N. UmakaA. UrasG. L. UsaiA. UtrobicicM. ValaJ. W. Van HoorneM. Van LeeuwenP. Vande VyvreD. VargaA. VargasM. VargyasR. VarmaM. VasileiouA. VasilievA. VauthierO. Vazquez DoceV. VecherninA. M. VeenE. VercellinS. Vergara LimonL. VermuntR. VernetR. VertesiL. VickovicJ. ViinikainenZ. VilakaziO. Villalobos BaillieA. Villatoro TelloA. VinogradovT. VirgiliV. VislaviciusA. VodopyanovM. A. VolklK. VoloshinS. A. VoloshinG. VolpeB. Von HallerI. VorobyevD. VoscekD. VranicJ. VrlakovaB. WagnerH. WangM. WangY. WatanabeM. WeberS. G. WeberA. WegrzynekD. F. WeiserS. C. WenzelJ. P. WesselsU. WesterhoffA. M. WhiteheadJ. WiechulaJ. WikneG. WilkJ. WilkinsonG. A. WillemsM. C. S. WilliamsE. WillsherB. WindelbandW. E. WittR. XuS. YalcinK. YamakawaS. YanoZ. YinH. YokoyamaI. -K. YooJ. H. YoonV. YurchenkoV. ZaccoloA. ZamanC. ZampolliH. J. C. ZanoliN. ZardoshtiA. ZarochentsevP. ZavadaN. ZaviyalovH. ZbroszczykM. ZhalovX. ZhangY. ZhangZ. ZhangC. ZhaoV. ZherebchevskiiN. ZhigarevaD. ZhouY. ZhouZ. ZhouH. ZhuJ. ZhuY. ZhuA. ZichichiM. B. ZimmermannG. ZinovjevJ. ZmeskalS. ZouAlberto Caliva'

subject

virtual [photon]:Kjerne- og elementærpartikkelfysikk: 431 [VDP]heavy ion collisionsHadrondielectron productionhiukkasfysiikkaPP01 natural sciencesS-W INTERACTIONSthermalALICEPhysics::Atomic PhysicsNuclear ExperimentBrookhaven RHIC CollPhysicsAU COLLISIONSLarge Hadron Colliderphoton: virtual ; photon: direct production ; heavy ion: scattering ; hadron: decay ; Brookhaven RHIC Coll ; transverse momentum ; CERN LHC Coll ; thermal ; ALICE ; mesonVDP::Kjerne- og elementærpartikkelfysikk: 431DIRECT PHOTON PRODUCTIONddc::Mathematics and natural scienses: 400::Physics: 430::Nuclear and elementary particle physics: 431 [VDP]PRIRODNE ZNANOSTI. Fizika.:Nuclear and elementary particle physics: 431 [VDP]CERN LHC CollVDP::Nuclear and elementary particle physics: 431Transverse momentumNuclear and High Energy PhysicsRho mesondirect production [photon]MesonPAIR PRODUCTIONPhoton lepton & quark productiontransverse momentumFew-body systemsmesonNuclear physicsDIRECT PHOTON PRODUCTION; S-W INTERACTIONS; AU COLLISIONS; RHO-MESON; DIMUON PRODUCTION; PAIR PRODUCTION; PP; J/PSI; ENHANCEMENT; EMISSIONENHANCEMENTscattering [heavy ion]0103 physical sciencesRelativistic heavy-ion collisionsRHO-MESON010306 general physicsParticle & resonance productionNuclear Physicsta114010308 nuclear & particles physics:Matematikk og naturvitenskap: 400::Fysikk: 430::Kjerne- og elementærpartikkelfysikk: 431 [VDP]NATURAL SCIENCES. Physics.J/PSIPair productionDIMUON PRODUCTIONQuark–gluon plasmaHigh Energy Physics::ExperimentEMISSIONdecay [hadron]

description

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. The first measurement of dielectron (e + e −) production in central (0 – 10 %) Pb – Pb collisions at √sNN=2.76TeV at the LHC is presented. The dielectron invariant-mass spectrum is compared to the expected contributions from hadron decays in the invariant-mass range 0 < mee < 3.5 GeV / c2. The ratio of data and the cocktail of hadronic contributions without vacuum ρ0 is measured in the invariant-mass range 0.15 < mee < 0.7 GeV / c2, where an excess of dielectrons is observed in other experiments, and its value is 1.40 ± 0.28 (stat.) ± 0.08 (syst.) ± 0.27 (cocktail). The dielectron spectrum measured in the invariant mass range 0 < mee < 1 GeV/ c2 is consistent with the predictions from two theoretical model calculations that include thermal dielectron production from both partonic and hadronic phases with in-medium broadened ρ0 meson. The fraction of direct virtual photons over inclusive virtual photons is extracted for dielectron pairs with invariant mass 0.1 < mee < 0.3 GeV/ c2 and in the transverse-momentum intervals 1 < pT, ee < 2 GeV/c and 2 < pT,ee < 4 GeV /c. The measured fraction of virtual direct photons is consistent with the measurement of real direct photons by ALICE and with the expectations from previous dielectron measurements at RHIC within the experimental uncertainties. SCOAP

yearjournalcountryeditionlanguage
2019-02-14
10.1103/physrevc.99.024002http://hdl.handle.net/11368/2936776