6533b82efe1ef96bd12945df

RESEARCH PRODUCT

Neutral pion and η meson production at midrapidity in Pb-Pb collisions at sNN=2.76 TeV

Christoph BlumeAntonino ZichichiMarcelo Gameiro MunhozValeria MucciforaXinye PengTinku Sarkar SinhaIvan VorobyevChristian LippmannLuis Gustavo PereiraAndrzej RybickiAmal SarkarVit KuceraKosei YamakawaCiprian Mihai MituSylvain ChapelandVladimir KaplinVytautas VislaviciusAlessandro GrelliRosario TurrisiBharati NaikAnar RustamovEsther BartschSiegfried Valentin FoertschJorge Mercado-perezAndrey VasilievMarek KowalskiM. A. LisaGyula BencediOton Vazquez DoceMassimiliano MarchisoneMassimiliano MarchisoneMassimiliano MarchisoneDeepa ThomasAndrey ReshetinEnrico ScomparinBoris BatyunyaChristopher HillsDomenico ColellaDomenico ColellaManuel ColocciEvgeny KondratyukHikari MurakamiJørgen André LienSona PochybovaAnik GuptaRinaldo RuiVladimir SamsonovVladimir SamsonovQiye ShouJulian Wojciech MyrchaSukalyan ChattopadhyayMarcello LunardonRainer Arno Ernst RenfordtAndrew Michael KuberaPetr NomokonovDieter RoehrichChristoph MayerChristine NattrassStefano PianoJens Robert LuhderTaku GunjiAmalia PopRachid GuernaneChitrasen JenaImrich SzarkaNicole BastidPooja PareekDmitry Yurevich PeresunkoDmitry Yurevich PeresunkoLatchezar BetevAlexey BogdanovHongbo ZhuHongbo ZhuKetil RoeedYasser Corrales MoralesSubhasis ChattopadhyayJeremy John WilkinsonMuhammad Umair NaruXing Long LiJaime NormanJaime NormanEungyu YunGustavo Conesa BalbastreSagarika SwainDavid HorakJanusz OleniaczRashmi RaniwalaBoris PolishchukSergey EvdokimovDanthasinghe PiyarathnaWilliam Edward WittAdam Tadeusz WegrzynekBruno EspagnonElena BrunaBrennan SchaeferPaolo BartaliniJanet Elizabeth SegerKlaus Johannes ReygersAndrea FrancesconAstrid MorrealeMario Ivan Martinez HernandezDominik VoscekFelix ReidtRaghunath SahooValerie Ramillien BarretEugen MudnicJorn Henning PutschkeBenjamin Andreas HessSourav KunduA. RossiVictor Jose Gaston FeuillardRedmer Alexander BertensMartin ValaLais Ozelin De Lima PimentelNicola BianchiAlberto ColluFrancesco PrinoBernhard HohlwegerBernhard Franz KetzerMiguel Martinez PedreiraD. Domenicis GimenezJ. PlutaEvgeny RyabinkinYongwook BaekYongwook BaekSebastian HornungClaude Andre PruneauRoberto BarberaElena BottaAnkita SharmaSergey FilchaginMarco BregantAnton AlkinJoel Anthony MazerPietro CorteseMohammad Al-turanySang Un AhnSamrangy SadhuXiaoming ZhangPascal DillensegerSergio Arturo Iga BuitronCarlos Duarte GalvanNaoto TanakaValentina ZaccoloZhongbao YinLivio BianchiCristina BeddaSibaliso MhlangaPaul Alois BuhlerAlexandru BercuciVojtech PacikFrancesco NoferiniAlberica ToiaMagnus MagerFernando Torales AcostaSe Yong KimDmitry BlauC. RoyPanagiotis ChristakoglouJonghan ParkSamsul IslamPhilipp Johannes LuettigLucina Gabriela Espinoza BeltranSumit Kumar SahaMohammad TariqGiacomo VolpeLuuk VermuntJu Hwan KangJamila Bashir ButtBenjamin AudurierChristian Holm ChristensenAntoine Xavier LardeuxHyeonjoong KimJussi Samuli ViinikainenDmitry FinogeevMaya Hachiya ShimomuraSergey GorbunovYuko SekiguchiMadan M. AggarwalNeelima AgrawalCorrado CicaloHans Rudolf SchmidtSarah Louise La PointeGermano BonomiSandeep DudiJens WiechulaMihai NiculescuPrabhakar PalniBuddhadeb BhattacharjeeBoris WagnerFederico CindoloChiara BianchinRabi Soto CamachoFernando ScarlassaraLiudmila MalininaLiudmila MalininaNora De MarcoGabriele Gaetano FronzeVardanush PapikyanPaolo GiubellinoPaolo GiubellinoPierre Vande VyvrePhilippe CrochetAstrid VauthierGanesh Jagannath TambaveJonatan AdolfssonMichael Linus KnichelMichael Linus KnichelHenner BueschingErik BrückenAndrew John CastroM. KonyushikhinDavid H. EvansAntonio Carlos Oliveira Da SilvaJogender SainiAndrea FestantiChristophe FurgetMengliang WangRene BellwiedPietro AntonioliTaesoo KimAlexander BorissovAlexander BorissovLuisa CifarelliFlorian HerrmannA. MaireAlexander MamonovAnton JuskoShaista KhanLinus FeldkampAndres SandovalOliver BuschDomenico EliaYury MelikyanOlja DordicShyam KumarHanna Paulina ZbroszczykJan JadlovskyCamila De ContiMikhail IppolitovMikhail IppolitovNatalia ZhigarevaPranjal SarmaGabor BiroDiego StoccoVladislav GrigoryevMarco H. D. Van LeeuwenShuguang ZouDarius KeijdenerAlexander KurepinErwann MassonWisla CarenaMartino GagliardiShinichi HayashiF. BockMarie GermainIlya SelyuzhenkovIlya SelyuzhenkovFrancesca CarnesecchiMarielle ChartierRamona LeaH. ZhangH. ZhangRune LangøyRoberta ArnaldiIonel StanAkihide NobuhiroAuro Prasad MohantySumit BasuAndrei Ionut HerghelegiuHeiko EngelNirbhay Kumar BeheraAnnika PassfeldMarten Ole SchmidtSomnath KarUlrich Michael FrankenfeldM. 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HarrisMauro GallioBernhard SkaaliFedor GuberMonika Joanna JakubowskaGiulio UsaiDirk HutterAlexandr TumkinAlexander DeistingAlexander DeistingMichal BrozAlberto RotondiHarald AppelshaeuserDavid Michael RohrDavid Michael RohrNicole Alice MartinPeter Braun-munzingerSanjeev Singh SambyalLuis Alberto Perez MorenoValeriy PozdniakovSoren Pontoppidan SorensenNicolo JacazioZhuo ZhouSean MurrayAlberto Martin Gago MedinaStefan KirschAnjali SharmaNicolas SchmidtNicolas SchmidtDezso VargaAndrew John LowePedro Gonzalez ZamoraSergey NikulinWadut ShaikhArtem ShangaraevDae-hyeok KimChristian Claude KuhnAlex Henri Jean ChauvinD. 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DasPaola La RoccaEdmundo Javier Garcia-solisRanjit NayakAra GrigoryanSebastian KlewinC.j. 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Figiel116Klaus BarthFrancesca BelliniFrancesca BelliniDavide PaganoTasnuva ChowdhuryConstantinos LoizidesConstantinos LoizidesEugenio ScapparoneVladimir IvanovJiri MaresShuaib Ahmad KhanVladimir IzucheevParaskevi GanotiKarel SafarikTomoya TsujiOliver Werner ArnoldPaulus Gerardus KuijerErin Frances GaugerGiulio EulisseKishora NayakArseniy ShabanovArtem KonevskikhTahir HussainKilian Eberhard SchwarzMarcel Araujo Silva FigueredoDario BerzanoDebojit SarkarAnju BhasinAndreas Michael MathisEvgeny KryshenPaolo MartinengoPeter StrmenJose Ruben Alfaro MolinaEmilia LeograndeBong-hwi LimPradip Kumar SahuViktor RatzaJesus Guillermo Contreras NunoMarc WeberRishat SultanovGergely Gabor BarnafoldiAlessandro FerrettiLaszlo OlahAnthony Robert TimminsAdam Ryszard KisielInayat Rasool BhatVladimir VecherninYasir AliLeticia Cunqueiro MendezArild VelureOmar Vazquez RuedaMatteo LupiKjetil UllalandClaudiu Cornel SchiauaHideki HamagakiSandra MorettoLars BratrudNicole ApadulaAndrea DanuUdo Wolfgang KebschullGuillaume BatignePascal DupieuxAndrea DaineseFrancesco RiggiGianluigi BocaAlberto BaldisseriSergey FokinAndrea AliciEleazar Cuautle FloresLucia LeardiniPeter GlasselAlwina Ruixin LiuPremomoy GhoshKonstantin MikhaylovVladislav MankoJose Luis Bazo AlbaRoberto PreghenellaPedro Hugo Ferreira Natal Da LuzPedro Hugo Ferreira Natal Da LuzNachiketa SarkarMarek ChojnackiMarian KrivdaMarian KrivdaFabrizio GrosaLukasz Kamil GraczykowskiNikolay ZaviyalovVladimir PeskovRosario NaniaStefania BufalinoAntonio BianchiYaroslav BerdnikovAlexander NyaninLeonid VinogradovGabor KissTorsten AltPeter Zahariev HristovKen OyamaHoonjung OhGuillermo Tejeda MunozMaciej SlupeckiJens Joergen GaardhoejeGoran SimatovicPetra LoncarMikhail MalaevEugenio NappiPanagiota FokaMassimo AngelettiMatteo ConcasAjay Kumar DashRan XuLinda VickovicAnisa KhatunIwona Anna SputowskaNur HussainJesse Thomas BuxtonXiaomei LiCaio Lagana FernandesMichal SefcikChristian BourjauSilvia DelsantoFrancesco BarileYonghong ZhangRoy Crawford LemmonIrais Bautista GuzmanGrzegorz Andrzej WilkMatthias RichterCostin GrigorasJun TakahashiJana BielcikovaJohanna StachelKatarina Krizkova GajdosovaAlexandre Alarcon Do Passo SuaideAnte BilandzicKristjan Herlache GulbrandsenJames Declan MulliganBasanta Kumar NandiCharalampos KouzinopoulosKai Oliver SchwedaSvein LindalPing YangAntonio Ortiz VelasquezJames Philip IddonNatasha SharmaEwa Gladysz-dziadusJan RakRahul Ramachandran NairDaniel Michael MuhlheimDmitry Mal'kevichJurgen SchukraftJohannes Peter WesselsJustin Thomas BlairYves Roland SchutzYves Roland SchutzVolodymyr YurchenkoRobert VertesiOeystein DjuvslandWerner RieglerHenrique Jose Correa ZanoliAntonija UtrobicicRenu BalaJavier Ernesto Castillo CastellanosAlexander KlugeLeo Clifford GreinerMinjung KimMohammad Ahmad SalehEmma Gonzalez HernandezJohannes LehrbachRafael Derradi De SouzaJennifer Lynn KlayBjarte KilengEjiro Naomi UmakaPetr ZávadaDeepika RatheeChristina MarkertPrzemyslaw Stefan RokitaPaul Christoph BätzingPreeti DhankherJoakim NystrandJhuma GhoshLawrence PinskyFederica SozziPeter Graham JonesVictor TrubnikovRama Narayana SingarajuCvetan Valeriev CheshkovIldefonso Leon MonzonRadiy IlkaevM. 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VarmaNikolai SmirnovStefano BagnascoMiljenko SuljicTatiana KaravichevaSubikash ChoudhuryDenise Aparecida Moreira De GodoySteffen Georg WeberAlessandro FelicielloKatherin Shtejer DiazChengxin ZhaoMohd Danish AzmiRoman LietavaMatti Mikael MieskolainenThomas Michael CormierLokesh KumarRaphael Noel TieulentYou ZhouMario Rodriguez CahuantziSandro Christian WenzelMarkus BallYury PestovMario Fusco GirardEster Anna Rita CasulaPeter MalzacherR. OravaLennart Van DoremalenSarah Julie PorteboeufJitendra KumarDavide Francesco LodatoT. K. NayakEdith Zinhle ButheleziSalvatore De PasqualeTeodor SiemiarczukMarkus Konrad KohlerHua PeiSohail Musa MahmoodGennady ZinovjevSadhana DashBiswarup PaulKirill LapidusPetra RiedlerJeremi NiedzielaJeremi NiedzielaAlessandra Maria MazzoniEdgar Dominguez RosasJose Antonio Lucio MartinezGiuseppe SimonettiGiuseppe SimonettiJiyoung KimCrispin WilliamsSonia RajputRuben ShahoyanJanka VrlakovaIgor LakomovBenjamin DonigusHugo Denis Antonio Pereira Da CostaHelmut Oskar OeschlerHelmut Oskar OeschlerIvan RavasengaYa ZhuRalf Peter AverbeckSvetlana SilaevaStefan Thomas HeckelJacobus Willem Van HoorneJacobus Willem Van HoorneEvgeny KarpechevTomasz TrzcinskiThorsten KolleggerJuan Carlos Cabanillas NorisLukas TroppMarkus KeilBedangadas MohantyCynthia Marie HadjidakisHorst Sebastian ScheidNatalia KondratyevaMateusz Andrzej PloskonPeter KalinakValery PuninMarianna MazzilliAdriana TelescaCaterina DeplanoKonstantin MunningMichael Karim HabibFatiha LehasZhang ChunhuiMohamad TarhiniCristiane JahnkeCristiane JahnkeFilippo CostaBeomsu ChangCorey James MyersIonut Cristian ArsenePaul StankusSuharyo SumowidagdoNima ZardoshtiArturo TauroSoyeon ChoMarian IvanovJulius Maximilian GronefeldCatalin-lucian RisteaSalvatore AiolaD. VranicD. VranicPhilippe PillotAshpreet Kaur DuggalBaidyanath SahooVitaly LoginovAdrian SevcencoStefano PanebiancoRaymond James EhlersVladimir NikulinLidia Maria GorlichKenneth Francis ReadKenneth Francis ReadZaida Conesa Del ValleBoris HippolyteRudiger HaakeStefano TrogoloKgotlaesele SenosiMichal SumberaPodist KurashviliDae Sung HwangHadi HassanAlexey KurepinPatrick Simon ReicheltSergey NazarenkoNikola PoljakTorsten DahmsEric EndressVasco Miguel Chibante BarrosoLuca BarioglioBrigitte CheynisCarsten KleinJihyun BhomKen SuzukiAnselmo MargottiSilvia PisanoAlessandra FantoniAngela BadalaChristian Klein-boesingHartmut HillemannsYosuke WatanabeYosuke WatanabeAnand Kumar DubeyHans Martin LjunggrenSanchari ThakurPaula Fernanda Toledo MatuokaC. Ceballos SanchezAnnalisa MastroserioDebasish DasRanbir SinghSimon Voigt NesbøKrzysztof Marek SielewiczLaure Marie MassacrierMalgorzata Anna JanikBoris TeyssierElisa LaudiPeter ChochulaA. S. GonzalezPartha Pratim BhaduriChristophe Pierre SuireKunal GargVladimir BelyaevGrigorii FeofilovOleg KaravichevFreja ThoresenAnatoly TikhonovTatsuya ChujoLuca MichelettiFranco MeddiDmitry AleksandrovPavel LarionovFranck MansoChinorat KobdajSudipan DeDong Jo KimMatej OravecMichal MeresMarkus FaselPrzemyslaw KarczmarczykFederico AntinoriGerardus NoorenJan MusinskyOmbretta PinazzaHiroki YokoyamaHiroki YokoyamaJana CrkovskáTome AnticicPiotr Jan GasikVikas Singhal

subject

PhysicsRange (particle radiation)PhotonLarge Hadron ColliderSpectrometer010308 nuclear & particles physics01 natural sciencesSpectral lineHadronizationNuclear physicsPion0103 physical sciencesQuark–gluon plasmaHigh Energy Physics::ExperimentNuclear Experiment010306 general physics

description

Neutral pion and η meson production in the transverse momentum range 1 <pT< 20 GeV/c have been measured at midrapidity by the ALICE experiment at the Large Hadron Collider (LHC) in central and semicentral Pb-Pb collisions at sNN  = 2.76 TeV. These results were obtained using the photon conversion method as well as the Photon Spectrometer (PHOS) and Electromagnetic Calorimeter detectors. The results extend the upper pT reach of the previous ALICE π0 measurements from 12 to 20 GeV/c and present the first measurement of η meson production in heavy-ion collisions at the LHC. The η/π0 ratio is similar for the two centralities and reaches at high pT a plateau value of 0.457 ± 0.013stat ± 0.018syst. A suppression of similar magnitude for π0 and η meson production is observed in Pb-Pb collisions with respect to their production in pp collisions scaled by the number of binary nucleon-nucleon collisions. We discuss the results in terms of Next to Leading Order (NLO) pQCD predictions and hydrodynamic models. The measurements show a stronger suppression than observed at lower center-of-mass energies in the pT range 6 <pT< 10 GeV/c. For pT< 3 GeV/c, hadronization models describe the π0 results while for the η some tension is observed.

yearjournalcountryeditionlanguage
2018-10-04Physical Review C
https://doi.org/10.1103/physrevc.98.044901