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Beam-energy-dependent two-pion interferometry and the freeze-out eccentricity of pions measured in heavy ion collisions at the STAR detector
Authors :
ADAMCZYK, L ADKINS, JK AGAKISHIEV, G AGGARWAL, MM AHAMMED, Z ALEKSEEV, I ALFORD, J ANSON, CD APARIN, A ARKHIPKIN, D ASCHENAUER, EC AVERICHEV, GS BANERJEE, A BEAVIS, DR BELLWIED, R BHASIN, A BHATI, AK BHATTARAI, P BICHSEL, H BIELCIK, J BIELCIKOVA, J BLAND, LC BORDYUZHIN, IG BOROWSKI, W BOUCHET, J BRANDIN, AV BROVKO, SG BULTMANN, S BUNZAROV, I BURTON, TP BUTTERWORTH, J CAINES, H SANCHEZ, MCD CEBRA, D CENDEJAS, R CERVANTES, MC CHALOUPKA, P CHANG, Z CHATTOPADHYAY, S CHEN, HF CHEN, JH CHEN, L CHENG, J CHERNEY, M CHIKANIAN, A CHRISTIE, W CHWASTOWSKI, J CODRINGTON, MJM CONTIN, G CRAMER, JG CRAWFORD, HJ CUI, X DAS, S LEYVA, AD DE SILVA, LC DEBBE, RR DEDOVICH, TG DENG, J DEREVSCHIKOV, AA DE SOUZA, RD DHAMIJA, S DI RUZZA, B DIDENKO, L DILKS, C DING, F DJAWOTHO, P DONG, X DRACHENBERG, JL DRAPER, JE DU, CM DUNKELBERGER, LE DUNLOP, JC EFIMOV, LG ENGELAGE, J ENGLE, KS EPPLEY, G EUN, L EVDOKIMOV, O EYSER, O FATEMI, R FAZIO, S FEDORISIN, J FILIP, P FINCH, E FISYAK, Y FLORES, CE GAGLIARDI, CA GANGADHARAN, DR GARAND, D GEURTS, F GIBSON, A GIRARD, M GLISKE, S GREINER, L GROSNICK, D GUNARATHNE, DS GUO, Y GUPTA, A GUPTA, S GURYN, W HAAG, B HAMED, A HAN, LX HAQUE, R HARRIS, JW HEPPELMANN, S HIRSCH, A HOFFMANN, GW HOFMAN, DJ HORVAT, S HUANG, B HUANG, HZ HUANG, X HUCK, P HUMANIC, TJ IGO, G JACOBS, WW JANG, H JUDD, EG KABANA, S KALINKIN, D KANG, K KAUDER, K KE, HW KEANE, D KECHECHYAN, A KESICH, A KHAN, ZH KIKOLA, DP KISEL, I KISIEL, A KOETKE, DD KOLLEGGER, T KONZER, J KORALT, I KOSARZEWSKI, LK KOTCHENDA, L KRAISHAN, AF KRAVTSOV, P KRUEGER, K KULAKOV, I KUMAR, L KYCIA, RA LAMONT, MAC LANDGRAF, JM LANDRY, KD LAURET, J LEBEDEV, A LEDNICKY, R LEE, JH LEVINE, MJ LI, C LI, W LI, X LI, Y LI, ZM LISA, MA LIU, F LJUBICIC, T LLOPE, WJ LOMNITZ, M LONGACRE, RS LUO, X MA, GL MA, YG DON, DMMDM MAHAPATRA, DP MAJKA, R MARGETIS, S MARKERT, C MASUI, H MATIS, HS MCDONALD, D MCSHANE, TS MINAEV, NG MIODUSZEWSKI, S MOHANTY, B MONDAL, MM MOROZOV, DA MUSTAFA, MK NANDI, BK NASIM, M NAYAK, TK NELSON, JM NIGMATKULOV, G NOGACH, LV NOH, SY NOVAK, J NURUSHEV, SB ODYNIEC, G OGAWA, A OH, K OHLSON, A OKOROKOV, V OLDAG, EW OLVITT, DL PACHR, M PAGE, BS PAL, SK PAN, YX PANDIT, Y PANEBRATSEV, Y PAWLAK, T PAWLIK, B PEI, H PERKINS, C PERYT, W PILE, P PLANINIC, M PLUTA, J POLJAK, N PONIATOWSKA, K PORTER, J POSKANZER, AM PRUTHI, NK PRZYBYCIEN, M PUJAHARI, PR PUTSCHKE, J QIU, H QUINTERO, A RAMACHANDRAN, S RANIWALA, R RANIWALA, S RAY, RL RILEY, CK RITTER, HG ROBERTS, JB ROGACHEVSKIY, OV ROMERO, JL ROSS, JF ROY, A RUAN, L RUSNAK, J RUSNAKOVA, O SAHOO, NR SAHU, PK SAKREJDA, I SALUR, S SANDWEISS, J SANGALINE, E SARKAR, A SCHAMBACH, J SCHARENBERG, RP SCHMAH, AM SCHMIDKE, WB SCHMITZ, N SEGER, J SEYBOTH, P SHAH, N SHAHALIEV, E SHANMUGANATHAN, PV SHAO, M SHARMA, B SHEN, WQ SHI, SS SHOU, QY SICHTERMANN, EP SINGARAJU, RN SKOBY, MJ SMIRNOV, D SMIRNOV, N SOLANKI, D SORENSEN, P SPINKA, HM SRIVASTAVA, B STANISLAUS, TDS STEVENS, JR STOCK, R STRIKHANOV, M STRINGFELLOW, B SUMBERA, M SUN, X SUN, XM SUN, Y SUN, Z SURROW, B SVIRIDA, DN SYMONS, TJM SZELEZNIAK, MA TAKAHASHI, J TANG, AH TANG, Z TARNOWSKY, T THOMAS, JH TIMMINS, AR TLUSTY, D TOKAREV, M TRENTALANGE, S TRIBBLE, RE TRIBEDY, P TRZECIAK, BA TSAI, OD TURNAU, J ULLRICH, T UNDERWOOD, DG VAN BUREN, G VAN NIEUWENHUIZEN, G VANDENBROUCKE, M VANFOSSEN, JA VARMA, R VASCONCELOS, GMS VASILIEV, AN VERTESI, R VIDEBAEK, F VIYOGI, YP VOKAL, S VOSSEN, A WADA, M WANG, F WANG, G WANG, H WANG, JS WANG, XL WANG, Y WEBB, G WEBB, JC WESTFALL, GD WIEMAN, H WISSINK, SW WITT, R WU, YF XIAO, Z XIE, W XIN, K XU, H XU, J XU, N XU, QH XU, Y XU, Z YAN, W YANG, C YANG, Y YE, Z YEPES, P YI, L YIP, K YOO, IK YU, N ZAWISZA, Y ZBROSZCZYK, H ZHA, W ZHANG, JB ZHANG, JL ZHANG, S ZHANG, XP ZHANG, Y ZHANG, ZP ZHAO, F ZHAO, J ZHONG, C ZHU, X ZHU, YH ZOULKARNEEVA, Y ZYZAK, M Laboratoire SUBATECH Nantes (SUBATECH) Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université de Nantes (UN)-Mines Nantes (Mines Nantes) Département de Physique Nucléaire (ex SPhN) (DPHN) Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay Laboratoire de l'Accélérateur Linéaire (LAL) Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11) STAR Mines Nantes (Mines Nantes)-Université de Nantes (UN)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) 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. Bultmann, S. Bunzarov, I. Burton, T. P. Butterworth, J. Caines, H. Calderon De La Barca Sanchez, 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. Kosarzewski, L. K. 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, 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, M. 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. Poniatowska, K. 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. Videbaek, 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, J. 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. 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.
Source :
Physical Review C-Nuclear Physics, Volume 92, Issue 1, Physical Review C, Physical Review C, American Physical Society, 2015, 92 (1), pp.014904. ⟨10.1103/PhysRevC.92.014904⟩, Physical Review C, 2015, 92 (1), pp.014904. ⟨10.1103/PhysRevC.92.014904⟩
Publication Year :
2015
Abstract
27 pages; 28 figures ; see paper for full list of authors; International audience; We present results of analyses of two-pion interferometry in Au+Au collisions at $\sqrt{s_{NN}}$ = 7.7, 11.5, 19.6, 27, 39, 62.4 and 200 GeV measured in the STAR detector as part of the RHIC Beam Energy Scan program. The extracted correlation lengths (HBT radii) are studied as a function of beam energy, azimuthal angle relative to the reaction plane, centrality, and transverse mass ($m_{T}$) of the particles. The azimuthal analysis allows extraction of the eccentricity of the entire fireball at kinetic freeze-out. The energy dependence of this observable is expected to be sensitive to changes in the equation of state. A new global fit method is studied as an alternate method to directly measure the parameters in the azimuthal analysis. The eccentricity shows a monotonic decrease with beam energy that is qualitatively consistent with the trend from all model predictions and quantitatively consistent with a hadronic transport model.
Details
Language :
English
ISSN :
05562813, 1089490X, 24699985, and 24699993
Database :
OpenAIRE
Journal :
Physical Review C-Nuclear Physics, Volume 92, Issue 1, Physical Review C, Physical Review C, American Physical Society, 2015, 92 (1), pp.014904. ⟨10.1103/PhysRevC.92.014904⟩, Physical Review C, 2015, 92 (1), pp.014904. ⟨10.1103/PhysRevC.92.014904⟩
Accession number :
edsair.doi.dedup.....e3ac5e96c2ad8d09d1f4e7deff7bee31