Observation of D0 meson nuclear modifications in Au+Au collisions at sqrt[s(NN)] = 200 GeV.
Journal: Physical Review Letters
Published:
Abstract
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.
Authors
L Adamczyk, J Adkins, G Agakishiev, M Aggarwal, Z Ahammed, I Alekseev, J Alford, C Anson, A Aparin, D Arkhipkin, E Aschenauer, G Averichev, A Banerjee, D Beavis, R Bellwied, A Bhasin, A Bhati, P Bhattarai, H Bichsel, J Bielcik, J Bielcikova, L Bland, I Bordyuzhin, W Borowski, J Bouchet, A Brandin, S Brovko, S Bültmann, I Bunzarov, T Burton, J Butterworth, H Caines, M Calderón De La Barca Sánchez, D Cebra, R Cendejas, M Cervantes, P Chaloupka, Z Chang, S Chattopadhyay, H Chen, J Chen, L Chen, J Cheng, M Cherney, A Chikanian, W Christie, J Chwastowski, M Codrington, G Contin, J Cramer, H Crawford, X Cui, S Das, A Davila Leyva, L De Silva, R Debbe, T Dedovich, J Deng, A Derevschikov, R Derradi De Souza, S Dhamija, B Di Ruzza, L Didenko, C Dilks, F Ding, P Djawotho, X Dong, J Drachenberg, J Draper, C Du, L Dunkelberger, J Dunlop, L Efimov, J Engelage, K Engle, G Eppley, L Eun, O Evdokimov, O Eyser, R Fatemi, S Fazio, J Fedorisin, P Filip, E Finch, Y Fisyak, C Flores, C Gagliardi, D Gangadharan, D Garand, F Geurts, A Gibson, M Girard, S Gliske, L Greiner, D Grosnick, D Gunarathne, Y Guo, A Gupta, S Gupta, W Guryn, B Haag, A Hamed, L-x Han, R Haque, J Harris, S Heppelmann, A Hirsch, G Hoffmann, D Hofman, S Horvat, B Huang, H Huang, X Huang, P Huck, T Humanic, G Igo, W Jacobs, H Jang, E Judd, S Kabana, D Kalinkin, K Kang, K Kauder, H Ke, D Keane, A Kechechyan, A Kesich, Z Khan, D Kikola, I Kisel, A Kisiel, D Koetke, T Kollegger, J Konzer, I Koralt, L Kotchenda, A Kraishan, P Kravtsov, K Krueger, I Kulakov, L Kumar, R Kycia, M A Lamont, J Landgraf, K Landry, J Lauret, A Lebedev, R Lednicky, J Lee, M Levine, C Li, W Li, X Li, X Li, Y Li, Z Li, M Lisa, F Liu, T Ljubicic, W Llope, M Lomnitz, R Longacre, X Luo, G Ma, Y Ma, D Madagodagettige Don, D Mahapatra, R Majka, S Margetis, C Markert, H Masui, H Matis, D Mcdonald, T Mcshane, N Minaev, S Mioduszewski, B Mohanty, M Mondal, D Morozov, M Mustafa, B Nandi, Md Nasim, T Nayak, J Nelson, G Nigmatkulov, L Nogach, S Noh, J Novak, S Nurushev, G Odyniec, A Ogawa, K Oh, A Ohlson, V Okorokov, E Oldag, D Olvitt, M Pachr, B Page, S Pal, Y Pan, Y Pandit, Y Panebratsev, T Pawlak, B Pawlik, H Pei, C Perkins, W Peryt, P Pile, M Planinic, J Pluta, N Poljak, J Porter, A Poskanzer, N Pruthi, M Przybycien, P Pujahari, J Putschke, H Qiu, A Quintero, S Ramachandran, R Raniwala, S Raniwala, R Ray, C Riley, H Ritter, J Roberts, O Rogachevskiy, J Romero, J Ross, A Roy, L Ruan, J Rusnak, O Rusnakova, N Sahoo, P Sahu, I Sakrejda, S Salur, J Sandweiss, E Sangaline, A Sarkar, J Schambach, R Scharenberg, A Schmah, W Schmidke, N Schmitz, J Seger, P Seyboth, N Shah, E Shahaliev, P Shanmuganathan, M Shao, B Sharma, W Shen, S Shi, Q Shou, E Sichtermann, R Singaraju, M Skoby, D Smirnov, N Smirnov, D Solanki, P Sorensen, H Spinka, B Srivastava, T D Stanislaus, J Stevens, R Stock, M Strikhanov, B Stringfellow, M Sumbera, X Sun, Y Sun, Z Sun, B Surrow, D Svirida, T J Symons, M Szelezniak, J Takahashi, A Tang, Z Tang, T Tarnowsky, J Thomas, A Timmins, D Tlusty, M Tokarev, S Trentalange, R Tribble, P Tribedy, B Trzeciak, O Tsai, J Turnau, T Ullrich, D Underwood, G Van Buren, G Van Nieuwenhuizen, M Vandenbroucke, J Vanfossen, R Varma, G M Vasconcelos, A Vasiliev, R Vertesi, F Videbæk, Y Viyogi, S Vokal, A Vossen, M Wada, F Wang, G Wang, H Wang, J Wang, X Wang, Y Wang, G Webb, J Webb, G Westfall, H Wieman, S Wissink, R Witt, Y Wu, Z Xiao, W Xie, K Xin, H Xu, J Xu, N Xu, Q Xu, Y Xu, Z Xu, W Yan, C Yang, Y Yang, Y Yang, Z Ye, P Yepes, L Yi, K Yip, I-k Yoo, N Yu, Y Zawisza, H Zbroszczyk, W Zha, J Zhang, J Zhang, S Zhang, X Zhang, Y Zhang, Z Zhang, F Zhao, J Zhao, C Zhong, X Zhu, Y Zhu, Y Zoulkarneeva, M Zyzak