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Nonprompt direct-photon production in Au+Au collisions at sNN =200 GeV
- Title
- Nonprompt direct-photon production in Au+Au collisions at sNN =200 GeV
- Authors
- Khanzadeev; Khatiwada; Kimelman; Hotvedt; Kim; D.J.; E.-J.; G.W.; Kincses; Kingan; Kistenev; E.; Kitamura; Klatsky; Huang; Imai; Inaba; Iordanova; Isenhower; Ivanishchev; Jacak; B.V.; Jezghani; Kleinjan; Kline; Koblesky; Komkov; Kotov; Kovacs; Kurgyis; Kurita; Kurosawa; Jiang; Ji; Johnson; B.M.; Jouan; Jumper; Kanda; Kang; Kawall; Kazantsev; A.V.; Key; J.A.; Khachatryan; Kwon; Lajoie; J.G.; Larionova; Lebedev; Lee; S.H.; Leitch; M.J.; Lewis; N.A.; Lim; Liu; M.X.; Li; Loomis; D.A.; Lynch; Lökös; Majoros; Makdisi; Y.I.; Makek; Manion; Manko; V.I.; Mannel; McCumber; McGaughey; P.L.; McGlinchey; McKinney; Meles; Mendoza; Mignerey; Abdulameer; N.J.; Acharya; U.; Adare; A.; Aidala; V.; Bai; Bandara; N.S.; Bannier; Barish; K.N.; Bathe; S.; Bazilevsky; Beaumier; Beckman; Belmont; R.; Berdnikov; Bichon; L.; Blankenship; C.; Ajitanand; N.N.; Akiba; Y.; Alfred; M.; Apadula; N.; Asano; H.; Azmoun; B.; Babintsev; Blau; D.S.; Bok; J.S.; Borisov; Boyle; K.; Brooks; A.C.; Milov; Mishra; D.K.; Mitchell; J.T.; Mitrankova; Mitrankov; Iu.; Morrison; D.P.; Moukhanova; T.V.; Mulilo; Murakami; Murata; Mwai; Miyasaka; Mizuno; Mohamed; Nagashima; Nagle; Mohanty; A.K.; Mondal; M.M.; Montuenga; Moon; J.L.; Nagy; M.I.; Nakagawa; I.; Nakagomi; Nakano; Nattrass; Nelson; Netrakanti; P.K.; Niida; Nishimura; Nouicer; Novitzky; Novák; Nukazuka; Nyanin; A.S.; O'Brien; Ogilvie; C.A.; Orjuela Koop; J.D.; Orosz; Osborn; Oskarsson; Ozawa; Pak; Pantuev; Papavassiliou; Park; Patel; Pate; S.F.; Peng; J.-C.; Perepelitsa; D.V.; Perera; G.D.N.; Peressounko; D. Yu.; Perezlara; C.E.; Perry; Petti; Pinkenburg; Pinson; Pisani; Potekhin; Pun; R.P.; Purschke; Radzevich; P.V.; Rak; Ramasubramanian; Ramson; B.J.; Ravinovich; Read; K.F.; Reynolds; Riabov; Richford; Rinn; Rolnick; S.D.; Rosati; Rowan; Rubin; Runchey; Sahlmueller; Saito; Sakaguchi; Sako; Samsonov; Sarsour; Sato; Schaefer; Schmoll; B.K.; Sedgwick; Seidl; Sen; Seto; Sett; Sexton; Sharma; Shein; Shi; Shibata; T.-A.; Shigaki; Shimomura; Shukla; Sickles; Silva; C.L.; Silvermyr; Singh; C.P.; Slunečka; Smith; K.L.; Snowball; Soltz; R.A.; Sondheim; W.E.; Sorensen; S.P.; Sourikova; I.V.; Stankus; Bryslawskyj; J.; Bumazhnov; Campbell; Canoa Roman; Chen; C.-H.; Chiu; Chi; C.Y.; Choi; I.J.; J.B.; Chujo; T.; Citron; Z.; Connors; Corliss; Corrales Morales; Csanád; Csörgo; Danley; T.W.; Datta; Daugherity; M.S.; M.L.; David; G.; Dion; Diss; P.B.; Do; J.H.; Doomra; Drees; K.A.; Durham; J.M.; Durum; Enokizono; Esha; Fadem; Fan; W.; Feege; Fields; D.E.; Finger; Firak; D.; Fitzgerald; Fokin; Dean; C.T.; Deblasio; Dehmelt; Denisov; Deshpande; Desmond; E.J.; S.L.; Frantz; J.E.; Franz; Frawley; A.D.; Gallus; P.; Gal; Garg; Ge; Giles; Giordano; F.; Glenn; Goto; Grau; Greene; S.V.; Grosse Perdekamp; Gunji; Guo; Hachiya; Haggerty; Hahn; K.I.; Hamagaki; Hamilton; H.F.; Hanks; Han; S.Y.; Harvey; Hasegawa; Haseler; T.O.S.; Hashimoto; Hemmick; T.K.; He; X.; Hill; J.C.; Hodges; Hollis; R.S.; Homma; Hong; Hoshino; Stepanov; Stoll; P.W.; Sugitate; Sukhanov; Sumita; Sun; Sziklai; Takahama; Taketani; Tanida; Tannenbaum; Tarafdar; Taranenko; Tieulent; Timilsina; Todoroki; Tomášek; Towell; Tserruya; Ueda; Ujvari; Van Hecke; H.W.; Velkovska; Virius; Vrba; Wang; X.R.; Watanabe; Y.S.; Wei; White; Wong; Woody; Wysocki; Xia; Xue; Yalcin; Yamaguchi; Y.L.; Yanovich; Yin; Yoon; Yoo; Yushmanov; I.E.; Yu; Zajc; W.A.; Zelenski; Zhou; Zou
- Ewha Authors
- 한인식
- SCOPUS Author ID
- 한인식
- Issue Date
- 2024
- Journal Title
- Physical Review C
- ISSN
- 2469-9985
- Citation
- Physical Review C vol. 109, no. 4
- Publisher
- American Physical Society
- Indexed
- SCOPUS; SCIE
- Document Type
- Article
- Abstract
- The measurement of the direct-photon spectrum from Au+Au collisions at sNN=200 GeV is presented by the PHENIX Collaboration using the external-photon-conversion technique for 0%-93% central collisions in a transverse-momentum (pT) range of 0.8-10 GeV/c. An excess of direct photons, above prompt-photon production from hard-scattering processes, is observed for pT<6GeV/c. Nonprompt direct photons are measured by subtracting the prompt component, which is estimated as Ncoll-scaled direct photons from p+p collisions at 200 GeV, from the direct-photon spectrum. Results are obtained for 0.8<pT<6.0GeV/c and suggest that the spectrum has an increasing inverse slope from ≈0.2 to 0.4 GeV/c with increasing pT, which indicates a possible sensitivity of the measurement to photons from earlier stages of the evolution of the collision. In addition, like the direct-photon production, the pT-integrated nonprompt direct-photon yields also follow a power-law scaling behavior as a function of collision-system size. The exponent, α, for the nonprompt component is found to be consistent with 1.1 with no apparent pT dependence. © 2024 American Physical Society.
- DOI
- 10.1103/PhysRevC.109.044912
- Appears in Collections:
- 사범대학 > 과학교육과 > Journal papers
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