Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/201583
Type: Artigo de periódico
Title: Dielectron Mass Spectra From Au+au Collisions At √[s(nn)]=200  gev.
Author: 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
Barnovska, Z
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
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
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
Grosnick, D
Guo, Y
Gupta, A
Gupta, S
Guryn, W
Haag, B
Hajkova, O
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
Korsch, W
Kotchenda, L
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, Y
Li, Z M
Lima, L M
Lisa, M A
Liu, F
Ljubicic, T
Llope, W J
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
Munhoz, M G
Mustafa, M K
Nandi, B K
Nasim, Md
Nayak, T K
Nelson, J M
Nogach, L V
Noh, S Y
Novak, J
Nurushev, S B
Odyniec, G
Ogawa, A
Oh, K
Ohlson, A
Okorokov, V
Oldag, E W
Oliveira, R A N
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
Plyku, D
Poljak, N
Porter, J
Poskanzer, A M
Pruthi, N K
Przybycien, M
Pujahari, P R
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
Sahoo, N R
Sahu, P K
Sakrejda, I
Salur, S
Sandacz, A
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
deSouza, U G
Spinka, H M
Srivastava, B
Stanislaus, T D S
Stevens, J R
Stock, R
Strikhanov, M
Stringfellow, B
Suaide, A A P
Sumbera, M
Sun, X
Sun, X M
Sun, Y
Sun, Z
Surrow, B
Svirida, D N
Symons, T J M
Szanto de Toledo, 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
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
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, N
Xu, Q H
Xu, Y
Xu, Z
Yan, W
Yang, C
Yang, Y
Ye, Z
Yepes, P
Yi, L
Yip, K
Yoo, I-K
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
,
Abstract: We report the STAR measurements of dielectron (e(+)e(-)) production at midrapidity (|y(ee)|<1) in Au+Au collisions at √[s(NN)]=200  GeV. The measurements are evaluated in different invariant mass regions with a focus on 0.30-0.76 (ρ-like), 0.76-0.80 (ω-like), and 0.98-1.05 (ϕ-like)   GeV/c(2). The spectrum in the ω-like and ϕ-like regions can be well described by the hadronic cocktail simulation. In the ρ-like region, however, the vacuum ρ spectral function cannot describe the shape of the dielectron excess. In this range, an enhancement of 1.77±0.11(stat)±0.24(syst)±0.33(cocktail) is determined with respect to the hadronic cocktail simulation that excludes the ρ meson. The excess yield in the ρ-like region increases with the number of collision participants faster than the ω and ϕ yields. Theoretical models with broadened ρ contributions through interactions with constituents in the hot QCD medium provide a consistent description of the dilepton mass spectra for the measurement presented here and the earlier data at the Super Proton Synchrotron energies.
Rights: aberto
Identifier DOI: 
Address: http://www.ncbi.nlm.nih.gov/pubmed/25062167
Date Issue: 2014
Appears in Collections:Unicamp - Artigos e Outros Documentos

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