6533b7d5fe1ef96bd1263ab9
RESEARCH PRODUCT
Suppression of Λ(1520) resonance production in central Pb-Pb collisions at sNN=2.76 TeV
Podist KurashviliLokesh KumarBernhard HohlwegerBarbara TrzeciakMarek BombaraDiego StoccoRinaldo RuiLukasz Kamil GraczykowskiYvonne PachmayerOton Vazquez DoceT. Sugitate45Subhasis ChattopadhyayIvan KiselVictor GonzalezJanka VrlakovaJuan Carlos Cabanillas NorisJohann ZmeskalAndrea DublaArvind KhuntiaPrabhakar PalniYaroslav BerdnikovChristoph BlumeJussi ViinikainenLee BarnbyAlexandre SuaideAmalia PopAnar RustamovAlessandro FelicielloBiswarup PaulSalvatore De PasqualeJean CleymansBoris TeyssierJamila ButtKetil RøedNikolay ZaviyalovFabrizio GrosaFelix ReidtSumit BasuMirko PlaninicJiri A. MaresJames Philip IddonMike SasJanusz OleniaczYue Shi LaiProfessor David EvansDavide PaganoSalvatore AiolaCiprian Mihai MituSmbat GrigoryanSergey NikolaevManoj Bhanudas JadhavAndrew LoweClaude PruneauLeticia CunqueiroBorge Svane NielsenFrancesca CarnesecchiGergely Gábor BarnaföldiRamona LeaStefania Beole'Rafael Derradi De SouzaJeremy WilkinsonJens-jorgen GaardhojeMais SuleymanovChristoph MayerAlexander AkindinovAndres Gomez RamirezIgor PshenichnovMarco ToppiKrzysztof RedlichThomas PeitzmannLeo GreinerKristjan GulbrandsenChristopher HillsChristine NattrassElena BottaRanjit NayakDanilo Silva De AlbuquerqueBenedetto Di RuzzaFrancesca BelliniVladimir KovalenkoDebasish DasAntonio UrasDomenico Di BariLucina Gabriela Espinoza BeltranPranjal SarmaMohd Danish AzmiJohan AlmeTiziano VirgiliIndranil DasJeremi NiedzielaAndrea FestantiAndreas MathisFederico RonchettiDavid SilvermyrViktor RiabovTahir HussainKai SchwedaPetra LoncarJ. Figiel116Adrian SevcencoPrzemyslaw KarczmarczykKenneth ReadAshutosh Kumar PandeyFrancesca SoramelThomas DietelTimo HildenVladimir VecherninLukas NellenRoman LavickaSang Un AhnMattia FagginPaula Fernanda Toledo MatuokaCatia Maria Annunziata PettaNikola PoljakAyben Karasu UysalWladyslaw Henryk TrzaskaJakub KvapilVladyslav LitichevskyiSyaefudin JaelaniMatteo LupiRaimond SnellingsMarkus KeilGuillaume BatigneErwann MassonNirbhay Kumar BeheraRafael Peretti PezziPaul BuehlerVladimir ZherebchevskyAndrea AliciMikael MieskolainenRashmi RaniwalaChinorat KobdajYury MelikyanLuciano RamelloSusanna CostanzaArturo Fernandez TellezDhananjaya ThakurMarielle ChartierSergey FokinRoy LemmonSamrangy SadhuRoberto BarberaNicolo JacazioTomasz TrzcinskiSami RäsänenDaniele De GruttolaPiero GiubilatoMarie GermainChristian BourjauSergey GorbunovGianluca UsaiMarco Van LeeuwenDavid ChinellatoGiacomo MargagliottiSomnath KarLuca BarioglioJavier Castillo CastellanosFederico CindoloEnrico ScomparinAnju BhasinPetr ZávadaHector Bello MartinezAnton AlkinElisa MeninnoGabriele FiorenzaFriederike BockAdam KisielChristopher AnsonGrigorii FeofilovYou ZhouIn Kwon YooJun TakahashiSandra MorettoSerpil Yalcin KuzuPeter ChristiansenLucas AltenkämperGines Martinez GarciaMario Rodriguez CahuantziBarbara GuerzoniPaolo CameriniDomenico ColellaLidia GoerlichPrzemyslaw RokitaAlberto Martin Gago MedinaMarek KowalskiOtwinowski JacekLaurent AphecetcheAntonio BianchiJose Luis Bazo AlbaMikhail ZhalovCesar CeballosMichael WeberDr. Sushanta TripathySabyasachi SiddhantaSean MurrayKenta ShigakiIan BeardenMałgorzata JanikMd. Rihan HaqueRahul Ramachandran NairMiguel ArratiaTasnuva ChowdhuryChiara OppedisanoPiotr GasikAdela KravcakovaMarcello BorriMarcello LunardonFrancesco Prinosubject
PhysicsLarge Hadron Collider010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyHadronResonance01 natural sciencesHadronizationBaryonNuclear physics0103 physical sciencesQuark–gluon plasmaImpact parameterNuclear Experiment010306 general physicsEvent generatordescription
The production yield of the Λ(1520) baryon resonance is measured at midrapidity in Pb-Pb collisions at sNN = 2.76 TeV with the ALICE detector at the Large Hadron Collider (LHC). The measurement is performed in the Λ(1520)→pK− (and charge conjugate) hadronic decay channel as a function of the transverse momentum (pT) and collision centrality. The ratio of the pT-integrated production of Λ(1520) baryons relative to Λ baryons in central collisions is suppressed by about a factor of 2 with respect to peripheral collisions. This is the first observation of the suppression of a baryonic resonance at the LHC and the first 3σ evidence of Λ(1520) suppression within a single collision system. The measured Λ(1520)/Λ ratio in central collisions is smaller than the value predicted by the statistical hadronization model calculations. The shape of the measured pT distribution and the centrality dependence of the suppression are reproduced by the EPOS3 Monte Carlo event generator. The measurement adds further support to the formation of a dense hadronic phase in the final stages of the evolution of the fireball created in heavy-ion collisions, lasting long enough to cause a significant reduction in the observable yield of short-lived resonances.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-02-08 | Physical Review C |