학술논문

Event-shape and multiplicity dependence of freeze-out radii in pp collisions at s $$ \sqrt{s} $$ = 7 TeV
Document Type
article
Author
The ALICE collaborationS. AcharyaD. AdamováS. P. AdhyaA. AdlerJ. AdolfssonM. M. AggarwalG. Aglieri RinellaM. AgnelloN. AgrawalZ. AhammedS. AhmadS. U. AhnS. AiolaA. AkindinovM. Al-TuranyS. N. AlamD. S. D. AlbuquerqueD. AleksandrovB. AlessandroH. M. AlfandaR. Alfaro MolinaY. AliA. AliciA. AlkinJ. AlmeT. AltL. AltenkamperI. AltsybeevM. N. AnaamC. AndreiD. AndreouH. A. AndrewsA. AndronicM. AngelettiV. AnguelovC. AnsonT. AntičićF. AntinoriP. AntonioliR. AnwarN. ApadulaL. AphecetcheH. AppelshäuserS. ArcelliR. ArnaldiI. C. ArseneM. ArslandokA. AugustinusR. AverbeckM. D. AzmiA. BadaláY. W. BaekS. BagnascoR. BailhacheR. BalaA. BaldisseriM. BallR. C. BaralR. BarberaL. BarioglioG. G. BarnaföldiL. 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. BetevA. BhasinI. R. BhatH. BhattB. BhattacharjeeJ. BhomA. BianchiL. BianchiN. BianchiJ. BielčíkJ. BielčíkováA. BilandzicG. BiroR. BiswasS. BiswasJ. T. BlairD. BlauC. BlumeG. BocaF. BockA. BogdanovL. BoldizsárA. BolozdynyaM. 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. CarnesecchiJ. Castillo CastellanosA. J. CastroE. A. R. CasulaC. Ceballos SanchezS. ChandraB. ChangW. ChangS. ChapelandM. ChartierS. ChattopadhyayA. ChauvinC. CheshkovB. CheynisV. Chibante BarrosoD. D. ChinellatoS. ChoP. ChochulaT. ChowdhuryP. ChristakoglouC. H. ChristensenP. ChristiansenT. ChujoC. 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. CrkovskáP. CrochetE. CuautleL. CunqueiroD. DabrowskiT. 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. DelsantoP. DhankherD. Di BariA. Di MauroR. A. DiazT. DietelP. DillensegerY. DingR. DiviáØ. DjuvslandA. DobrinD. Domenicis GimenezB. DönigusO. DordicA. K. DubeyA. DublaS. DudiA. K. DuggalM. DukhishyamP. DupieuxR. J. EhlersD. EliaH. EngelE. EppleB. ErazmusF. ErhardtA. ErokhinM. R. ErsdalB. EspagnonG. EulisseJ. EumD. EvansS. EvdokimovL. FabbiettiM. FagginJ. FaivreA. FantoniM. FaselL. FeldkampA. FelicielloG. FeofilovA. Fernández TéllezA. FerrettiA. FestantiV. J. G. FeuillardJ. FigielS. FilchaginD. FinogeevF. M. FiondaG. FiorenzaF. FlorM. FlorisS. FoertschP. FokaS. FokinE. FragiacomoA. FranciscoU. FrankenfeldG. G. FronzeU. FuchsC. FurgetA. FursM. Fusco GirardJ. J. GaardhøjeM. GagliardiA. M. GagoK. GajdosovaC. D. GalvanP. GanotiC. GarabatosE. Garcia-SolisK. GargC. GargiuloP. GasikE. F. GaugerM. B. Gay DucatiM. GermainJ. GhoshP. GhoshS. K. GhoshP. GianottiP. GiubellinoP. GiubilatoP. GlässelD. M. Goméz CoralA. Gomez RamirezV. GonzalezP. González-ZamoraS. GorbunovL. GörlichS. 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. HatzifotiadouP. HauerS. HayashiS. T. HeckelE. HellbärH. 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. IddonR. IlkaevM. InabaM. IppolitovM. S. IslamM. IvanovV. IvanovV. IzucheevB. JacakN. JacazioP. M. JacobsM. B. JadhavS. JadlovskaJ. JadlovskyS. JaelaniC. JahnkeM. J. JakubowskaM. A. JanikM. 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. KimK. KindraS. KirschI. KiselS. KiselevA. KisielJ. L. KlayC. KleinJ. KleinC. Klein-BösingS. KlewinA. KlugeM. L. KnichelA. G. KnospeC. KobdajM. KofaragoM. K. KöhlerT. KolleggerN. KondratyevaE. KondratyukA. KonevskikhP. J. KonopkaM. KonyushikhinL. KoskaO. KovalenkoV. KovalenkoM. KowalskiI. KrálikA. KravčákováL. KreisM. KrivdaF. KrizekM. KrügerE. KryshenM. KrzewickiA. M. KuberaV. KučeraC. KuhnP. G. KuijerJ. KumarL. KumarS. KumarS. KunduP. KurashviliA. KurepinA. B. KurepinS. KushpilJ. KvapilM. J. KweonY. KwonS. L. La PointeP. La RoccaY. S. LaiI. LakomovR. LangoyK. LapidusA. LardeuxP. LarionovE. LaudiR. LavickaT. LazarevaR. LeaL. LeardiniS. LeeF. LehasS. LehnerJ. LehrbachR. C. LemmonI. León MonzónP. LévaiX. LiX. L. LiJ. LienR. LietavaB. LimS. LindalV. LindenstruthS. W. LindsayC. LippmannM. A. LisaV. LitichevskyiA. LiuH. M. LjunggrenW. J. LlopeD. F. LodatoV. LoginovC. LoizidesP. LoncarX. LopezE. López TorresP. 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. MarešG. V. MargagliottiA. MargottiJ. MarguttiA. MarínC. MarkertM. MarquardN. A. MartinP. MartinengoJ. L. MartinezM. I. MartínezG. Martínez GarcíaM. Martinez PedreiraS. MasciocchiM. MaseraA. MasoniL. MassacrierE. MassonA. MastroserioA. M. MathisP. F. T. MatuokaA. MatyjaC. MayerM. MazzilliM. A. MazzoniF. MeddiY. MelikyanA. Menchaca-RochaE. MeninnoM. MeresS. MhlangaY. MiakeL. MichelettiM. M. MieskolainenD. L. MihaylovK. MikhaylovA. MischkeA. N. MishraD. MiśkowiecJ. MitraC. M. MituN. MohammadiA. P. MohantyB. MohantyM. Mohisin KhanM. M. MondalD. A. Moreira De GodoyL. A. P. MorenoS. MorettoA. MorrealeA. MorschT. MrnjavacV. MucciforaE. MudnicD. MühlheimS. MuhuriJ. D. MulliganM. G. MunhozK. MünningM. I. A. MunozR. H. MunzerH. MurakamiS. MurrayL. MusaJ. MusinskyC. J. MyersJ. W. MyrchaB. NaikR. NairB. K. NandiR. NaniaE. NappiM. U. NaruA. F. NassirpourH. Natal da LuzC. NattrassS. R. NavarroK. NayakR. NayakT. K. NayakS. NazarenkoR. A. Negrao De OliveiraL. NellenS. V. NesboG. NeskovicF. NgJ. NiedzielaB. S. NielsenS. NikolaevS. NikulinV. NikulinF. NoferiniP. NomokonovG. NoorenJ. C. C. NorisJ. NormanA. NyaninJ. NystrandM. OginoA. OhlsonJ. OleniaczA. C. Oliveira Da SilvaM. H. OliverJ. OnderwaaterC. OppedisanoR. OravaM. OravecA. Ortiz VelasquezA. OskarssonJ. OtwinowskiK. OyamaY. PachmayerV. PacikD. PaganoG. PaićP. 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. PetráčekM. PetroviciR. P. PezziS. PianoM. PiknaP. PillotL. O. D. L. PimentelO. PinazzaL. PinskyS. PisanoD. B. PiyarathnaM. PłoskońM. 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. PuninK. PuranapandaJ. PutschkeR. E. QuishpeS. RahaS. RajputJ. RakA. RakotozafindrabeL. RamelloF. RamiR. RaniwalaS. RaniwalaS. S. RäsänenB. T. RascanuR. RathV. RatzaI. RavasengaK. F. ReadK. RedlichA. RehmanP. ReicheltF. 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VargaA. VargasM. VargyasR. VarmaM. VasileiouA. VasilievO. Vázquez DoceV. VecherninA. M. VeenE. VercellinS. Vergara LimónL. VermuntR. VernetR. VértesiL. VickovicJ. ViinikainenZ. VilakaziO. Villalobos BaillieA. Villatoro TelloG. VinoA. VinogradovT. VirgiliV. VislaviciusA. VodopyanovB. VolkelM. A. VölklK. VoloshinS. A. VoloshinG. VolpeB. von HallerI. VorobyevD. VoscekJ. VrlákováB. WagnerM. WangY. WatanabeM. WeberS. G. WeberA. WegrzynekD. F. WeiserS. C. WenzelJ. P. WesselsU. WesterhoffA. M. WhiteheadE. WidmannJ. WiechulaJ. WikneG. WilkJ. WilkinsonG. A. WillemsE. WillsherB. WindelbandW. E. WittY. WuR. XuS. YalcinK. YamakawaS. YanoZ. YinH. YokoyamaI.-K. YooJ. H. YoonS. YuanV. YurchenkoV. ZaccoloA. ZamanC. ZampolliH. J. C. ZanoliN. ZardoshtiA. ZarochentsevP. ZávadaN. ZaviyalovH. ZbroszczykM. ZhalovX. ZhangY. ZhangZ. ZhangC. ZhaoV. ZherebchevskiiN. ZhigarevaD. ZhouY. ZhouZ. ZhouH. ZhuJ. ZhuY. ZhuA. ZichichiM. B. ZimmermannG. Zinovjev
Source
Journal of High Energy Physics, Vol 2019, Iss 9, Pp 1-22 (2019)
Subject
Heavy Ion Experiments
Particle correlations and fluctuations
Nuclear and particle physics. Atomic energy. Radioactivity
QC770-798
Language
English
ISSN
1029-8479
Abstract
Abstract Two-particle correlations in high-energy collision experiments enable the extraction of particle source radii by using the Bose-Einstein enhancement of pion production at low relative momentum q ∝ 1/R. It was previously observed that in pp collisions at s $$ \sqrt{s} $$ = 7TeV the average pair transverse momentum k T range of such analyses is limited due to large background correlations which were attributed to mini-jet phenomena. To investigate this further, an event-shape dependent analysis of Bose-Einstein correlations for pion pairs is performed in this work. By categorizing the events by their transverse sphericity S T into spherical (S T > 0:7) and jet-like (S T < 0:3) events a method was developed that allows for the determination of source radii for much larger values of k T for the first time. Spherical events demonstrate little or no background correlations while jet-like events are dominated by them. This observation agrees with the hypothesis of a mini-jet origin of the non-femtoscopic background correlations and gives new insight into the physics interpretation of the k T dependence of the radii. The emission source size in spherical events shows a substantially diminished k T dependence, while jet-like events show indications of a negative trend with respect to k T in the highest multiplicity events. Regarding the emission source shape, the correlation functions for both event sphericity classes show good agreement with an exponential shape, rather than a Gaussian one.