在质心能量\(\sqrt{s_{NN}} = 200\) GeV的金离子与金离子碰撞中对D0介子核修正的观测
Observation of D0 meson nuclear modifications in Au+Au collisions at sqrt[s(NN)] = 200 GeV.
作者信息
Adamczyk L, Adkins J K, Agakishiev G, Aggarwal M M, Ahammed Z, Alekseev I, Alford J, Anson C D, Aparin A, Arkhipkin D, Aschenauer E C, Averichev G S, Banerjee A, Beavis D R, Bellwied R, Bhasin A, Bhati A K, Bhattarai P, Bichsel H, Bielcik J, Bielcikova J, Bland L C, Bordyuzhin I G, Borowski W, Bouchet J, Brandin A V, Brovko S G, Bültmann S, Bunzarov I, Burton T P, Butterworth J, Caines H, Calderón de la Barca Sánchez M, Cebra D, Cendejas R, Cervantes M C, Chaloupka P, Chang Z, Chattopadhyay S, Chen H F, Chen J H, Chen L, Cheng J, Cherney M, Chikanian A, Christie W, Chwastowski J, Codrington M J M, Contin G, Cramer J G, Crawford H J, Cui X, Das S, Davila Leyva A, De Silva L C, Debbe R R, Dedovich T G, Deng J, Derevschikov A A, Derradi de Souza R, Dhamija S, di Ruzza B, Didenko L, Dilks C, Ding F, Djawotho P, Dong X, Drachenberg J L, Draper J E, Du C M, Dunkelberger L E, Dunlop J C, Efimov L G, Engelage J, Engle K S, Eppley G, Eun L, Evdokimov O, Eyser O, Fatemi R, Fazio S, Fedorisin J, Filip P, Finch E, Fisyak Y, Flores C E, Gagliardi C A, Gangadharan D R, Garand D, Geurts F, Gibson A, Girard M, Gliske S, Greiner L, Grosnick D, Gunarathne D S, Guo Y, Gupta A, Gupta S, Guryn W, Haag B, Hamed A, Han L-X, Haque R, Harris J W, Heppelmann S, Hirsch A, Hoffmann G W, Hofman D J, Horvat S, Huang B, Huang H Z, Huang X, Huck P, Humanic T J, Igo G, Jacobs W W, Jang H, Judd E G, Kabana S, Kalinkin D, Kang K, Kauder K, Ke H W, Keane D, Kechechyan A, Kesich A, Khan Z H, Kikola D P, Kisel I, Kisiel A, Koetke D D, Kollegger T, Konzer J, Koralt I, Kotchenda L, Kraishan A F, Kravtsov P, Krueger K, Kulakov I, Kumar L, Kycia R A, Lamont M A C, Landgraf J M, Landry K D, Lauret J, Lebedev A, Lednicky R, Lee J H, LeVine M J, Li C, Li W, Li X, Li X, Li Y, Li Z M, Lisa M A, Liu F, Ljubicic T, Llope W J, Lomnitz M, Longacre R S, Luo X, Ma G L, Ma Y G, Madagodagettige Don D M M D, Mahapatra D P, Majka R, Margetis S, Markert C, Masui H, Matis H S, McDonald D, McShane T S, Minaev N G, Mioduszewski S, Mohanty B, Mondal M M, Morozov D A, Mustafa M K, Nandi B K, Nasim Md, Nayak T K, Nelson J M, Nigmatkulov G, Nogach L V, Noh S Y, Novak J, Nurushev S B, Odyniec G, Ogawa A, Oh K, Ohlson A, Okorokov V, Oldag E W, Olvitt D L, Pachr M, Page B S, Pal S K, Pan Y X, Pandit Y, Panebratsev Y, Pawlak T, Pawlik B, Pei H, Perkins C, Peryt W, Pile P, Planinic M, Pluta J, Poljak N, Porter J, Poskanzer A M, Pruthi N K, Przybycien M, Pujahari P R, Putschke J, Qiu H, Quintero A, Ramachandran S, Raniwala R, Raniwala S, Ray R L, Riley C K, Ritter H G, Roberts J B, Rogachevskiy O V, Romero J L, Ross J F, Roy A, Ruan L, Rusnak J, Rusnakova O, Sahoo N R, Sahu P K, Sakrejda I, Salur S, Sandweiss J, Sangaline E, Sarkar A, Schambach J, Scharenberg R P, Schmah A M, Schmidke W B, Schmitz N, Seger J, Seyboth P, Shah N, Shahaliev E, Shanmuganathan P V, Shao M, Sharma B, Shen W Q, Shi S S, Shou Q Y, Sichtermann E P, Singaraju R N, Skoby M J, Smirnov D, Smirnov N, Solanki D, Sorensen P, Spinka H M, Srivastava B, Stanislaus T D S, Stevens J R, Stock R, Strikhanov M, Stringfellow B, Sumbera M, Sun X, Sun X M, Sun Y, Sun Z, Surrow B, Svirida D N, Symons T J M, Szelezniak M A, Takahashi J, Tang A H, Tang Z, Tarnowsky T, Thomas J H, Timmins A R, Tlusty D, Tokarev M, Trentalange S, Tribble R E, Tribedy P, Trzeciak B A, Tsai O D, Turnau J, Ullrich T, Underwood D G, Van Buren G, van Nieuwenhuizen G, Vandenbroucke M, Vanfossen J A, Varma R, Vasconcelos G M S, Vasiliev A N, Vertesi R, Videbæk F, Viyogi Y P, Vokal S, Vossen A, Wada M, Wang F, Wang G, Wang H, Wang J S, Wang X L, Wang Y, Wang Y, Webb G, Webb J C, Westfall G D, Wieman H, Wissink S W, Witt R, Wu Y F, Xiao Z, Xie W, Xin K, Xu H, Xu J, Xu N, Xu Q H, Xu Y, Xu Z, Yan W, Yang C, Yang Y, Yang Y, Ye Z, Yepes P, Yi L, Yip K, Yoo I-K, Yu N, Zawisza Y, Zbroszczyk H, Zha W, Zhang J B, Zhang J L, Zhang S, Zhang X P, Zhang Y, Zhang Z P, Zhao F, Zhao J, Zhong C, Zhu X, Zhu Y H, Zoulkarneeva Y, Zyzak M
机构信息
AGH University of Science and Technology, Cracow, Poland.
University of Kentucky, Lexington, Kentucky 40506-0055, USA.
出版信息
Phys Rev Lett. 2014 Oct 3;113(14):142301. doi: 10.1103/PhysRevLett.113.142301. Epub 2014 Sep 30.
We report the first measurement of charmed-hadron (D(0)) production via the hadronic decay channel (D(0) → K(-) + π(+)) in Au+Au collisions at sqrt[s(NN)] = 200 GeV with the STAR experiment. The charm production cross section per nucleon-nucleon collision at midrapidity scales with the number of binary collisions, N(bin), from p+p to central Au+Au collisions. The D(0) meson yields in central Au + Au collisions are strongly suppressed compared to those in p+p scaled by N(bin), for transverse momenta p(T) > 3 GeV/c, demonstrating significant energy loss of charm quarks in the hot and dense medium. An enhancement at intermediate p(T) is also observed. Model calculations including strong charm-medium interactions and coalescence hadronization describe our measurements.
我们通过STAR实验报告了在√[s(NN)] = 200 GeV的金离子与金离子碰撞中，通过强子衰变通道（D(0) → K(-) + π(+)）产生粲强子（D(0)）的首次测量结果。在中快度下，每核子-核子碰撞的粲产生截面随二元碰撞数N(bin)变化，范围从质子-质子碰撞到中心金离子-金离子碰撞。对于横向动量p(T) > 3 GeV/c，中心金离子-金离子碰撞中的D(0)介子产额与按N(bin)缩放的质子-质子碰撞中的产额相比受到强烈抑制，这表明粲夸克在热密介质中有显著的能量损失。在中间p(T)处也观察到了增强。包括强粲-介质相互作用和聚结强子化的模型计算描述了我们的测量结果。
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