Diego SANCHEZ

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2021
• Auteurs : Shreyasi AcharyaDagmar AdamovaAlexander AdlerJonatan AdolfssonGianluca Aglieri RinellaMichelangelo AgnelloNeelima AgrawalZubayer AhammedShakeel AhmadSang Un AhnZaenal AkbarAlexander AkindinovMohammad Al-TuranyDanilo Silva de AlbuquerqueDmitry AleksandrovBruno AlessandroHaidar Mas'Ud AlfandaJose Ruben Alfaro MolinaBushra AliYasir AliAndrea AliciNegin AlizadehvandchaliAnton AlkinJohan AlmeTorsten AltLucas AltenkamperIgor AltsybeevMustafa AnaamCristian AndreiDimitra AndreouAnton AndronicVenelin AnguelovTome AnticicFederico AntinoriPietro AntonioliNicole ApadulaLaurent AphecetcheHarald AppelshaeuserSilvia ArcelliRoberta ArnaldiMiguel Ignacio Arratia MunozIonut Cristian ArseneMesut ArslandokAndre AugustinusRalf Peter AverbeckSizar AzizMohd Danish AzmiAngela BadalaYongwook BaekXiaozhi BaiRaphaelle Marie BailhacheRenu BalaAlessandro BalbinoAlberto BaldisseriMarkus BallDebjani BanerjeeRoberto BarberaLuca BarioglioMaria BarlouGergely Gabor BarnafoldiLee Stuart BarnbyValerie Ramillien BarretClara BartelsKlaus BarthEsther BartschFilippo BaruffaldiNicole BastidSumit BasuGuillaume BatigneBoris BatyunyaDibakar BauriJose Luis Bazo AlbaIan Gardner BeardenCaitlin BeattieIouri BelikovA.D. C. Bell HechavarriaFrancesca BelliniRene BellwiedSvetlana BelokurovaVladimir BelyaevGyula BencediStefania BeoleAlexandru BercuciYaroslav BerdnikovAnastasia BerdnikovaDaniel BerenyiLuisa BergmannMihaela Gabriela BesoiuLatchezar BetevPartha Pratim BhaduriAnju BhasinInayat Rasool BhatMohammad Asif BhatBuddhadeb BhattacharjeePurba BhattacharyaAntonio BianchiLivio BianchiNicola BianchiJaroslav BielcikJana BielcikovaAnte BilandzicGabor BiroSaikat BiswasJustin Thomas BlairDmitry BlauMihail Bogdan BlidaruChristoph BlumeGianluigi BocaFriederike BockAlexey BogdanovStefano BoiJeongsu BokLaszlo BoldizsarAlexander BolozdynyaMarek BombaraGermano BonomiHerve BorelAlexander BorissovHannah BossiElena BottaLars BratrudPeter Braun-MunzingerMarco BregantMichal BrozGiuseppe Eugenio BrunoMatthew Daniel BucklandDmitry BudnikovHenner BueschingStefania BufalinoOphelie BugnonPaul Alois BuhlerPredrag BuncicEdith Zinhle ButheleziJamila Bashir ButtSebastian Adam BysiakDavide CaffarriAlberto CalivaErnesto Calvo VillarJuan Manuel Mejia CamachoRabi Soto CamachoPaolo CameriniFabio de Moraes CanedoAaron Allan CaponFrancesca CarnesecchiRobin Albert Andre CaronJavier Ernesto Castillo CastellanosEster Anna Rita CasulaFabio CatalanoCesar Ceballos SanchezPritam ChakrabortySinjini ChandraWan ChangSylvain ChapelandMarielle ChartierSubhasis ChattopadhyaySukalyan ChattopadhyayAlex Henri Jean ChauvinCvetan Valeriev CheshkovB. CheynisVasco Miguel Chibante BarrosoDavid Dobrigkeit ChinellatoSoyeon ChoPeter ChochulaPanagiotis ChristakoglouChristian Holm ChristensenPeter ChristiansenTatsuya ChujoCorrado CicaloLuisa CifarelliFederico CindoloMichael Rudolf CiupekGiulia ClaiJean Willy Andre CleymansFabio Filippo ColamariaJonathan Samuel ColburnDomenico ColellaAlberto ColluManuel ColocciMatteo ConcasG. Conesa BalbastreZaida Conesa del ValleGiacomo ContinJesus Guillermo Contreras NunoThomas Michael CormierPietro CorteseMauro Rogerio CosentinoFilippo CostaSusanna CostanzaPhilippe CrochetEleazar Cuautle FloresPengyao CuiLeticia Cunqueiro MendezAndrea DaineseFlorian Paul Andre DamasMeike Charlotte DanischAndrea DanuDebasish DasIndranil DasProttay DasProttoy DasSupriya DasSadhana DashSudipan DeAnnalisa de CaroGiacinto de CataldoLorenzo de CilladiJan de CuvelandAlessandro de FalcoDaniele de GruttolaNora de MarcoChiara de MartinSalvatore de PasqualeSuman DebHermann Franz DegenhardtKamil Rafal DejaSilvia DelsantoWenjing DengPreeti DhankherDomenico Di BariAntonio Di MauroRaul Arteche DiazThomas DietelP. DillensegerPascal RaisigYanchun DingRoberto DiviaDhruv Utpalkumar DixitOeystein DjuvslandUliana DmitrievaJaehyeon DoAlexandru Florin DobrinBenjamin DonigusOlja DordicAnand Kumar DubeyAndrea DublaSandeep DudiPascal DupieuxPascal DupieuxTabea Maria EderRaymond James EhlersViljar Nilsen EikelandBarbara Ewa ErazmusBarbara Ewa ErazmusFrancesca ErcolessiFilip ErhardtAndrey ErokhinMagnus Rentsch ErsdalBruno EspagnonGiulio EulisseDavid EvansSergey EvdokimovLaura FabbiettiMattia FagginJulien FaivreFeng FanAlessandra FantoniMarkus FaselPietro FecchioAlessandro FelicielloGrigorii FeofilovArturo Fernandez TellezAndrea FerreroAlessandro FerrettiAndrea FestantiVictor Jose Gaston FeuillardJan FigielSergey FilchaginDmitry FinogeevFiorella FiondaGabriele FiorenzaFernando Antonio FlorAmanda Nicole FloresSiegfried Valentin FoertschPanagiota FokaSergey FokinEnrico FragiacomoUlrich FuchsChristophe FurgetArtur FursMario Fusco GirardJens Joergen GaardhoejeMartino GagliardiAlberto Martin Gago MedinaArthur Willem Jean GalCarlos Duarte GalvanParaskevi GanotiJose Garabatos CuadradoJesus Ricardo Alvarado GarciaEdmundo Javier Garcia-SolisKunal GargCorrado GargiuloAydan GaribliKatharina GarnerPiotr Jan GasikErin Frances GaugerMarie GermainM.B. Gay DucatiMarie GermainJhuma GhoshPremomoy GhoshSanjay Kumar GhoshMarco GiacalonePaola GianottiPaolo GiubellinoPiero GiubilatoAude Marie Camille GlaenzerPeter GlasselVictor GonzalezLaura Helena Gonzalez TruebaSergey GorbunovLidia Maria GorlichSven GotovacVarlen GrabskiLukasz Kamil GraczykowskiKatie Leanne GrahamLeo Clifford GreinerAlessandro GrelliCostin GrigorasVladislav GrigoryevAra GrigoryanSmbat GrigoryanOla Slettevoll GroettvikFabrizio GrosaJan Fiete Grosse-OetringhausMaxime GuilbaudRachid GuernaneMaxime Rene Joseph GuilbaudManuel GuittiereKristjan Herlache GulbrandsenTaku GunjiAnik GuptaRamni GuptaIrais Bautista GuzmanRudiger HaakeMichael Karim HabibCynthia Marie HadjidakisHideki HamagakiGergoe HamarMohammed HamidRyan Patrick HanniganMd Rihan HaqueAlena GromadaA. HarlenderovaJohn William HarrisAustin Vincent HartonJan Anton HasenbichlerHadi HassanDespina HatzifotiadouPhilip HauerLaura Brittany HavenerShinichi HayashiStefan Thomas HeckelErnst HellbarHaavard HelstrupTomas HermanEmma Gonzalez HernandezGerardo Antonio Herrera CorralFlorian HerrmannKristin Fanebust HetlandHartmut HillemannsChristopher HillsBoris HippolyteBernhard HohlwegerJan HonermannGeun Hee HongDavid HorakSebastian HornungRitsuya HosokawaPeter Zahariev HristovChun-Lu HuangCharles HughesPatrick HuhnThomas HumanicHushnud HushnudLucia Anna HusovaNur HussainDirk HutterJames Philip IddonRadiy IlkaevHira IlyasMotoi InabaGian Michele InnocentiMikhail IppolitovArtem IsakovMd Samsul IslamMarian IvanovVladimir IvanovVladimir IzucheevBarbara JacakNicolo JacazioPeter Martin JacobsSlavka JadlovskaJan JadlovskySyaefudin JaelaniCristiane JahnkeMonika Joanna JakubowskaMalgorzata Anna JanikThomas JansonMarko JercicOliver Thomas JevonsMuqing JinFlorian JonasPeter Graham JonesJerome JungMichael JungAnton JuskoPeter KalinakAlexander Philipp KalweitVladimir KaplinSomnath KarAyben Karasu UysalDavid KaratovicOleg KaravichevTatiana KaravichevaPrzemyslaw KarczmarczykEvgeny KarpechevAndrey KazantsevUdo Wolfgang KebschullRalf KeidelMarkus KeilBernhard Franz KetzerZhanna KhabanovaAhsan Mehmood KhanShaista KhanAlexei KhanzadeevYury KharlovAnisa KhatunArvind KhuntiaBjarte KilengBeomkyu KimDaehyeok KimDong Jo KimEun Joo KimHyeonjoong KimJaehyun KimJinsook KimJiyoung KimJungeol KimJunlee KimMinjung KimSe Yong KimTaejun KimTaesoo KimStefan KirschIvan KiselSergey KiselevAdam Ryszard KisielJennifer Lynn KlayJochen KleinSpencer Robert KleinChristian Klein-BoesingMatthias KleinerThomas KlemenzAlexander KlugeAnders Garritt KnospeChinorat KobdajMarkus Konrad KohlerThorsten Sven KolleggerAndrey KondratyevNatalia KondratyevaEvgeny KondratyukJoshua Leon KonigStephan Alexander KonigstorferPiotr Jan KonopkaGeorgui KornakovSebastian Dominik KoryciakLukas KoskaOleksandr KovalenkoVladimir KovalenkoMarek KowalskiIvan KralikAdela KravcakovaLukas KreisMarian KrivdaFilip KrizekKatarina Krizkova GajdosovaMartin KroesenMario KrugerEvgeny KryshenMikolaj KrzewickiVit KuceraChristian Claude KuhnPaulus Gerardus KuijerTakuya KumaokaLokesh KumarSourav KunduPodist KurashviliAlexander KurepinAlexey KurepinAlexey KuryakinSvetlana KushpilJakub KvapilMin Jung KweonJiyeon KwonYoungil KwonSarah Louise La PointePaola La RoccaYue Shi LaiAnantachai LakrathokMassimo LamannaRune LangoyKirill LapidusPavel LarionovElisa LaudiLukas LautnerRoman LavickaTatiana LazarevaRamona LeaJoonil LeeSeongjoo LeeJohannes LehrbachRoy Crawford LemmonIldefonso Leon MonzonEzra Douglas LesserMichael LettrichPeter LevaiXiaomei LiXing Long LiJorgen Andre LienRoman LietavaBong-Hwi LimSanghoon LimVolker LindenstruthAmelia LindnerChristian LippmannAlwina Ruixin LiuJian LiuIngrid Mckibben LofnesVitaly LoginovConstantinos LoizidesPetra LoncarJorge Andres Lopez LopezXavier Bernard LopezErnesto Lopez TorresJens Robert LuhderMarcello LunardonGrazia LuparelloYugang MaAlla MaevskayaMagnus MagerSohail Musa MahmoodTariq MahmoudAntonin MaireRichard Daniel MajkaMikhail MalaevQasim Waheed MalikLiudmila MalininaDmitry Mal KevichD. Mal’kevichNeelkamal MallickPeter MalzacherGiuseppe MandaglioMassimiliano MarchisoneFranck MansoVito ManzariYaxian MaoMassimiliano MarchisoneJiri MaresGiacomo Vito MargagliottiAnselmo MargottiAna Maria MarinChristina MarkertMarco MarquardNicole Alice MartinPaolo MartinengoJacobb Lee MartinezMario Ivan Martinez HernandezGines Martinez-GarciaSilvia MasciocchiMassimo MaseraAlberto MasoniLaure Marie MassacrierAnnalisa MastroserioAndreas Michael MathisOliver MatonohaPaula Fernanda Toledo MatuokaAdam Tomasz MatyjaChristoph MayerFrancesco MazzaschiMarianna MazzilliAlessandra Maria MazzoniAdrian Florin MechlerFranco MeddiYury MelikyanArturo Alejandro Menchaca-RochaMengke CaiElisa MeninnoAnjaly Sasikumar MenonMichal MeresSibaliso MhlangaYasuo MiakeLuca MichelettiLucrezia Camilla MigliorinDimitar Lubomirov MihaylovKonstantin MikhaylovAditya Nath MishraDariusz Czeslaw MiskowiecAbhi ModakNaghmeh MohammadiAuro Prasad MohantyBedangadas MohantyMohammed Mohisin KhanZuzana MoravcovaCindy MordasiniDenise Aparecida Moreira de GodoyLuis Alberto Perez MorenoIgor MorozovAndreas MorschTeo MrnjavacValeria MucciforaEugen MudnicDaniel Michael MuhlheimSanjib MuhuriJames Declan MulliganAlice MulliriMarcelo Gameiro MunhozRobert Helmut MunzerHikari MurakamiSean MurrayLuciano MusaJan MusinskyCorey James MyersJulian Wojciech MyrchaBharati NaikRahul Ramachandran NairBasanta Kumar NandiRosario NaniaEugenio NappiMuhammad Umair NaruAdrian Fereydon NassirpourChristine NattrassSergey NazarenkoAlexandra NeaguLukas NellenSimon Voigt NesboGvozden NeskovicDmitrii NesterovBorge Svane NielsenSergey NikolaevSergey NikulinVladimir NikulinFrancesco NoferiniSeoyoung NohPetr NomokonovJaime NormanNorbert NovitzkyPiotr NowakowskiAlexander NyaninJoakim Ingemar NystrandMasanori OginoAlice Elisabeth OhlsonJanusz OleniaczAntonio Carlos Oliveira da SilvaMichael Henry OliverAnna OnnerstadB.S. OnnerstadChiara OppedisanoAntonio Ortiz VelasquezTakumi OsakoAnders Nils Erik OskarssonJacek Tomasz OtwinowskiKen OyamaYvonne Chiara PachmayerSonali PadhanDavide PaganoGuy PaicJinjin PanStefano PanebiancoPooja PareekJonghan ParkJasper Elias ParkkilaSonia ParmarSurya Prakash PathakBiswarup PaulJacopo PazziniHua PeiThomas PeitzmannXinye PengLuis Gustavo PereiraHugo Denis Antonio Pereira da CostaDmitry Yurevich PeresunkoGuillermo Mesa PerezSebastien PerrinYury PestovVojtech PetracekMihai PetroviciRafael Peretti PezziStefano PianoMiroslav PiknaPhilippe PillotOmbretta PinazzaLawrence PinskyChiara PintoSilvia PisanoMateusz Andrzej PloskonMirko PlaninicFabian PliquettMartin PoghosyanBoris PolishchukB. PolichtchoukNikola PoljakAmalia PopSarah Julie PorteboeufSarah Porteboeuf HoussaisR Jefferson PorterValeriy PozdniakovSidharth Kumar PrasadRoberto PreghenellaFrancesco PrinoClaude Andre PruneauIgor PshenichnovMaximiliano PuccioShi QiuLuca QuagliaRaquel Estefania Quishpe QuishpeSimone RagoniJan RakAndry Malala RakotozafindrabeLuciano RamelloFouad RamiSaul Anibal Rodriguez RamirezArianna Grisel Torres RamosRashmi RaniwalaSudhir RaniwalaSami Sakari RasanenRutuparna RathIvan RavasengaKenneth Francis ReadAndreas Ralph RedelbachKrzysztof RedlichAttiq Ur RehmanPatrick Simon ReicheltFelix ReidtRainer Arno Ernst RenfordtZuzana JakubcinovaZ. RescakovaKlaus Johannes ReygersAndrei RiabovViktor RiabovTuva Ora Herenui RichertMatthias Rudolph RichterPetra RiedlerWerner RieglerFrancesco RiggiCatalin-Lucian RisteaSudhir Pandurang RodeMario Rodriguez CahuantziK. 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• Organismes : Laboratoire de physique subatomique et des technologies associées Institut de Physique Nucléaire d'Orsay Institut de Recherches sur les lois Fondamentales de l'Univers Laboratoire de Physique de Clermont Laboratoire de Physique de Clermont Laboratoire de physique subatomique et des technologies associées Institut Pluridisciplinaire Hubert Curien Institut de Recherches sur les lois Fondamentales de l'Univers Laboratoire de physique subatomique et des technologies associées Institut de Recherches sur les lois Fondamentales de l'Univers Institut de Recherches sur les lois Fondamentales de l'Univers Institut de Physique des 2 Infinis de Lyon Institut de Physique des 2 Infinis de Lyon Laboratoire de Physique Subatomique et de Cosmologie Institut de Physique Nucléaire d'Orsay Laboratoire de Physique de Clermont Laboratoire de physique subatomique et des technologies associées Institut de Recherches sur les lois Fondamentales de l'Univers Laboratoire de Physique de Clermont Laboratoire de physique subatomique et des technologies associées Institut de Physique Nucléaire d'Orsay Laboratoire de Physique Subatomique et de Cosmologie Institut de Recherches sur les lois Fondamentales de l'Univers Laboratoire de Physique Subatomique et de Cosmologie Institut Pluridisciplinaire Hubert Curien Laboratoire de physique subatomique et des technologies associées Laboratoire de physique subatomique et des technologies associées Institut de Recherches sur les lois Fondamentales de l'Univers Laboratoire de Physique Subatomique et de Cosmologie Laboratoire de physique subatomique et des technologies associées Laboratoire de physique subatomique et des technologies associées Institut de Physique Nucléaire d'Orsay Institut Pluridisciplinaire Hubert Curien Institut de Physique Nucléaire d'Orsay Institut Pluridisciplinaire Hubert Curien Laboratoire de Physique de Clermont Institut Pluridisciplinaire Hubert Curien Laboratoire de Physique de Clermont Institut de Physique des 2 Infinis de Lyon Laboratoire de physique subatomique et des technologies associées Institut de Physique Nucléaire d'Orsay Institut de Physique des 2 Infinis de Lyon Institut de Recherches sur les lois Fondamentales de l'Univers Institut de Recherches sur les lois Fondamentales de l'Univers Institut de Recherches sur les lois Fondamentales de l'Univers Laboratoire de physique subatomique et des technologies associées Laboratoire de Physique de Clermont Laboratoire de Physique de Clermont Institut de Recherches sur les lois Fondamentales de l'Univers Institut Pluridisciplinaire Hubert Curien Laboratoire de physique subatomique et des technologies associées Institut Pluridisciplinaire Hubert Curien Institut Pluridisciplinaire Hubert Curien Institut Pluridisciplinaire Hubert Curien Laboratoire de physique subatomique et des technologies associées Laboratoire de physique subatomique et des technologies associées Institut de Physique Nucléaire d'Orsay Laboratoire de Physique de Clermont Laboratoire de Physique de Clermont Laboratoire de physique subatomique et des technologies associées Institut de Physique des 2 Infinis de Lyon Institut de Physique des 2 Infinis de Lyon Institut de Recherches sur les lois Fondamentales de l'Univers Institut de Recherches sur les lois Fondamentales de l'Univers
• Publié dans Journal of High Energy Physics le 23/10/2020

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Résumé : Jet fragmentation transverse momentum (j$_{T}$) distributions are measured in proton-proton (pp) and proton-lead (p-Pb) collisions at $ \sqrt{s_{\mathrm{NN}}} $ = 5.02 TeV with the ALICE experiment at the LHC. Jets are reconstructed with the ALICE tracking detectors and electromagnetic calorimeter using the anti-k$_{T}$ algorithm with resolution parameter R = 0.4 in the pseudorapidity range |η| < 0.25. The j$_{T}$ values are calculated for charged particles inside a fixed cone with a radius R = 0.4 around the reconstructed jet axis. The measured j$_{T}$ distributions are compared with a variety of parton-shower models. Herwig and Pythia 8 based models describe the data well for the higher j$_{T}$ region, while they underestimate the lower j$_{T}$ region. The j$_{T}$ distributions are further characterised by fitting them with a function composed of an inverse gamma function for higher j$_{T}$ values (called the “wide component”), related to the perturbative component of the fragmentation process, and with a Gaussian for lower j$_{T}$ values (called the “narrow component”), predominantly connected to the hadronisation process. The width of the Gaussian has only a weak dependence on jet transverse momentum, while that of the inverse gamma function increases with increasing jet transverse momentum. For the narrow component, the measured trends are successfully described by all models except for Herwig. For the wide component, Herwig and PYTHIA 8 based models slightly underestimate the data for the higher jet transverse momentum region. These measurements set constraints on models of jet fragmentation and hadronisation.[graphic not available: see fulltext]

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2021
• Auteurs : Shreyasi AcharyaDagmar AdamovaAlexander AdlerJonatan AdolfssonGianluca Aglieri RinellaMichelangelo AgnelloNeelima AgrawalZubayer AhammedShakeel AhmadSang Un AhnZaenal AkbarAlexander AkindinovMohammad Al-TuranyDanilo Silva de AlbuquerqueDmitry AleksandrovBruno AlessandroHaidar Mas'Ud AlfandaJose Ruben Alfaro MolinaBushra AliYasir AliAndrea AliciNegin AlizadehvandchaliAnton AlkinJohan AlmeTorsten AltLucas AltenkamperIgor AltsybeevMustafa AnaamCristian AndreiDimitra AndreouAnton AndronicVenelin AnguelovTome AnticicFederico AntinoriPietro AntonioliAnuj ChandraNicole ApadulaLaurent AphecetcheHarald AppelshaeuserSilvia ArcelliRoberta ArnaldiMiguel Ignacio Arratia MunozIonut Cristian ArseneMesut ArslandokAndre AugustinusRalf Peter AverbeckSizar AzizMohd Danish AzmiAngela BadalaYongwook BaekXiaozhi BaiRaphaelle Marie BailhacheRenu BalaAlessandro BalbinoAlberto BaldisseriMarkus BallDebjani BanerjeeRoberto BarberaLuca BarioglioMaria BarlouGergely Gabor BarnafoldiLee Stuart BarnbyValerie Ramillien BarretClara BartelsKlaus BarthEsther BartschFilippo BaruffaldiNicole BastidSumit BasuGuillaume BatigneBoris BatyunyaDibakar BauriJose Luis Bazo AlbaIan Gardner BeardenCaitlin BeattieIouri BelikovA.D. C. Bell HechavarriaFrancesca BelliniRene BellwiedSvetlana BelokurovaVladimir BelyaevGyula BencediStefania BeoleAlexandru BercuciYaroslav BerdnikovAnastasia BerdnikovaDaniel BerenyiLuisa BergmannMihaela Gabriela BesoiuLatchezar BetevPartha Pratim BhaduriAnju BhasinInayat Rasool BhatMohammad Asif BhatBuddhadeb BhattacharjeePurba BhattacharyaAntonio BianchiLivio BianchiNicola BianchiJaroslav BielcikJana BielcikovaAnte BilandzicGabor BiroSaikat BiswasJustin Thomas BlairDmitry BlauMihail Bogdan BlidaruChristoph BlumeGianluigi BocaFriederike BockAlexey BogdanovStefano BoiJeongsu BokLaszlo BoldizsarAlexander BolozdynyaMarek BombaraPeter Matthew BondGermano BonomiHerve BorelAlexander BorissovHannah BossiElena BottaLars BratrudPeter Braun-MunzingerMarco BregantMichal BrozGiuseppe Eugenio BrunoMatthew Daniel BucklandDmitry BudnikovHenner BueschingStefania BufalinoOphelie BugnonPaul Alois BuhlerPredrag BuncicEdith Zinhle ButheleziJamila Bashir ButtSebastian Adam BysiakDavide CaffarriAlberto CalivaErnesto Calvo VillarJuan Manuel Mejia CamachoRabi Soto CamachoPaolo CameriniFabio de Moraes CanedoAaron Allan CaponFrancesca CarnesecchiRobin Albert Andre CaronJavier Ernesto Castillo CastellanosEster Anna Rita CasulaFabio CatalanoCesar Ceballos SanchezPritam ChakrabortySinjini ChandraWan ChangSylvain ChapelandMarielle ChartierSubhasis ChattopadhyaySukalyan ChattopadhyayAlex Henri Jean ChauvinTonatiuh Garcia ChavezCvetan Valeriev CheshkovB. 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• Publié dans Eur.Phys.J.C le 30/10/2025

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Résumé : The first measurement of the production of pions, kaons, (anti-)protons and $\phi $ mesons at midrapidity in Xe–Xe collisions at $\sqrt{s_{\mathrm{NN}}} = 5.44~\text {TeV}$ is presented. Transverse momentum ($p_{\mathrm{T}}$) spectra and $p_{\mathrm{T}}$-integrated yields are extracted in several centrality intervals bridging from p–Pb to mid-central Pb–Pb collisions in terms of final-state multiplicity. The study of Xe–Xe and Pb–Pb collisions allows systems at similar charged-particle multiplicities but with different initial geometrical eccentricities to be investigated. A detailed comparison of the spectral shapes in the two systems reveals an opposite behaviour for radial and elliptic flow. In particular, this study shows that the radial flow does not depend on the colliding system when compared at similar charged-particle multiplicity. In terms of hadron chemistry, the previously observed smooth evolution of particle ratios with multiplicity from small to large collision systems is also found to hold in Xe–Xe. In addition, our results confirm that two remarkable features of particle production at LHC energies are also valid in the collision of medium-sized nuclei: the lower proton-to-pion ratio with respect to the thermal model expectations and the increase of the $\phi $-to-pion ratio with increasing final-state multiplicity.

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Source

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• Type de publi. : Article dans une revue
• Date de publi. : 01/01/2021
• Auteurs : Shreyasi AcharyaDagmar AdamovaAlexander AdlerJonatan AdolfssonGianluca Aglieri RinellaMichelangelo AgnelloNeelima AgrawalZubayer AhammedShakeel AhmadSang Un AhnIshaan AhujaZaenal AkbarAlexander AkindinovMohammad Al-TuranySk Noor AlamDmitry AleksandrovBruno AlessandroHaidar Mas'Ud AlfandaJose Ruben Alfaro MolinaBushra AliYasir AliAndrea AliciNegin AlizadehvandchaliAnton AlkinJohan AlmeTorsten AltLucas AltenkamperIgor AltsybeevMustafa AnaamCristian AndreiDimitra AndreouAnton AndronicMassimo AngelettiVenelin AnguelovFederico AntinoriPietro AntonioliAnuj ChandraNicole ApadulaLaurent AphecetcheHarald AppelshaeuserSilvia ArcelliRoberta ArnaldiIonut Cristian ArseneMesut ArslandokAndre AugustinusRalf Peter AverbeckSizar AzizMohd Danish AzmiAngela BadalaYongwook BaekXiaozhi BaiRaphaelle Marie BailhacheYoshini BailungRenu BalaAlessandro BalbinoAlberto BaldisseriBartosz BalisMarkus BallDebjani BanerjeeRoberto BarberaLuca BarioglioMaria BarlouGergely Gabor BarnafoldiLee Stuart BarnbyValerie Ramillien BarretClara BartelsKlaus BarthEsther BartschFilippo BaruffaldiNicole BastidSumit BasuGuillaume BatigneBoris BatyunyaDibakar BauriJose Luis Bazo AlbaIan Gardner BeardenCaitlin BeattieIouri BelikovAilec Bell HechavarriaFrancesca BelliniRene BellwiedSvetlana BelokurovaVladimir BelyaevGyula BencediStefania BeoleAlexandru BercuciYaroslav BerdnikovAnastasia BerdnikovaDaniel BerenyiLuisa BergmannMihaela Gabriela BesoiuLatchezar BetevPartha Pratim BhaduriAnju BhasinInayat Rasool BhatMohammad Asif BhatBuddhadeb BhattacharjeePurba BhattacharyaLivio BianchiNicola BianchiJaroslav BielcikJana BielcikovaJacek Bogumil BiernatAnte BilandzicGabor BiroSaikat BiswasJustin Thomas BlairDmitry BlauMihail Bogdan BlidaruChristoph BlumeGianluigi BocaFriederike BockAlexey BogdanovStefano BoiJeongsu BokLaszlo BoldizsarAlexander BolozdynyaMarek BombaraPeter Matthew BondGermano BonomiHerve BorelAlexander BorissovHannah BossiElena BottaLars BratrudPeter Braun-MunzingerMarco BregantMichal BrozGiuseppe Eugenio BrunoMatthew Daniel BucklandDmitry BudnikovHenner BueschingStefania BufalinoOphelie BugnonPaul Alois BuhlerEdith Zinhle ButheleziJamila Bashir ButtSebastian Adam BysiakDavide CaffarriMengke CaiHelen Louise CainesAlberto CalivaErnesto Calvo VillarJuan Manuel Mejia CamachoRabi Soto CamachoPaolo CameriniFabio de Moraes CanedoFrancesca CarnesecchiRobin Albert Andre CaronJavier Ernesto Castillo CastellanosEster Anna Rita CasulaFabio CatalanoCesar Ceballos SanchezPritam ChakrabortySinjini ChandraSylvain ChapelandMarielle ChartierSubhasis ChattopadhyaySukalyan ChattopadhyayAlex Henri Jean ChauvinTonatiuh Garcia ChavezCvetan Valeriev CheshkovB. 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• Publié dans Phys.Lett.B le 31/10/2025

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Résumé : In quantum scattering processes between two particles, aspects characterizing the strong and Coulomb forces can be observed in kinematic distributions of the particle pairs. The sensitivity to the interaction potential reaches a maximum at low relative momentum and vanishing distance between the two particles. Ultrarelativistic heavy-ion collisions at the LHC provide an abundant source of many hadron species and can be employed as a measurement method of scattering parameters that is complementary to scattering experiments. This study confirms that momentum correlations of particles produced in Pb-Pb collisions at the LHC provide an accurate measurement of kaon-proton scattering parameters at low relative momentum, allowing precise access to the $ {K}^{-} p\rightarrow {K}^{-} p$ process. This work also validates the femtoscopic measurement in ultrarelativistic heavy-ion collisions as an alternative to scattering experiments and a complementary tool to the study of exotic atoms with comparable precision. In this work, the first femtoscopic measurement of momentum correlations of ${K}^{-} p\ ({K}^{+}\overline{p})$ and ${K}^{+}p ({K}^{-}\overline{p})$ pairs in Pb-Pb collisions at centre-of-mass energy per nucleon pair of $\sqrt{s_{\rm NN}} = 5.02$ TeV registered by the ALICE experiment is reported. The components of the ${K}^{-} p$ complex scattering length are extracted and found to be $\Re f_0=-0.91\pm~{0.03}$(stat)$^{+0.17}_{-0.03}$(syst) and $\Im f_0 = 0.92\pm~{0.05}$(stat)$^{+0.12}_{-0.33}$(syst). The results are compared with chiral effective field theory predictions as well as with existing data from dedicated scattering and exotic kaonic atom experiments.

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