J/ψ polarization in p+p collisions at √s=200 GeV in STAR

Leszek Adamczyk, J. Kevin Adkins, Geydar Agakishiev, Madan Mohan Aggarwal, Zubayer Ahammed, Igor G. Alekseev, Jeremy Alford, Christopher Daniel Anson, Alexey Aparin, Dmitry A. Arkhipkin, Elke Caroline Aschenauer, Georgy S. Averichev, Jan Balewski, A. Banerjee, Z. Barnovska, Dana Richard Beavis, Rene Bellwied, Anju Bhasin, Ashok Kumar Bhati, P. Bhattarai, Hans Bichsel, Jaroslav Bielčík, Jana Bielčíková, Leslie C. Bland, Igor G. Bordyuzhin, W. Borowski, Jonathan Bouchet, Andrei V. Brandin, Samantha G. Brovko, Stephen L. Bültmann, Ivan Bunzarov, T.P. Burton, Joseph Butterworth, Helen Louise Caines, Manuel Calderón de la Barca Sánchez, Daniel A. Cebra, R. Cendejas, M.C. Cervantes, Petr Chaloupka, Z. Chang, S. Chattopadhyay, H.F. Chen, J.H. Chen, L. Chen, J. Cheng, Michael Gerard Cherney, Alexei Chikanian, William Christie, J. Chwastowski, M.J.M. Codrington, R. Corliss, John G. Cramer, Henry J. Crawford, X. Cui, Supriya Das, A. Davila Leyva, L.C. De Silva, R.R. Debbe, Tatiana G. Dedovič, J. Deng, Anatoly A. Derevschikov, Rafael Derradi de Souza, S. Dhamija, Benedetto di Ruzza, Lidia Didenko, Christopher Dilks, F. Ding, P. Djawotho, X. Dong, James Lucus Drachenberg, James E. Draper, C.M. Du, Lloyd Edward Dunkelberger, James C. Dunlop, Leonid G. Efimov, Jon M. Engelage, K.S. Engle, Geary Wareham Eppley, L. Eun, Olga Y. Evdokimov, Renee H. Fatemi, Salvatore Fazio, Jan Fedorišin, Peter Filip, Evan Finch, Yuri V. Fisyak, C.E. Flores, Carl A. Gagliardi, Dhevan Raja Gangadharan, David Garand, Frank Geurts, Adam Gibson, M. Girard, S. Gliske, David P. Grosnick, Y. Guo, Anik Gupta, S. Gupta, Włodzimierz Guryn, B. Haag, O. Hajkova, Ahmed M. Hamed, L.-X. Han, R. Haque, John W. Harris, J.P. Hays-Wehle, Steven Francis Heppelmann, Andrew S. Hirsch, Gerald W. Hoffmann, D.J. Hofman, S. Horvat, B. Huang, H.Z. Huang, X. Huang, Patrick Huck, Thomas J. Humanic, George J. Igo, William W. Jacobs, H. Jang, Eleanor G. Judd, Sonia Kabana, Dmitry Kalinkin, K. Kang, Kolja Kauder, Hongwei Ke, Declan Keane, Armen Kechechyan, A. Kesich, Z.H. Khan, D.P. Kikola, Ivan Kisel, Adam Ryszard Kisiel, Donald D. Koetke, Thorsten Kollegger, J. Konzer, I. Koralt, Wolfgang K. Korsch, L. Kotchenda, Peter Kravtsov, Keith William Krueger, Igor Kulakov, Lokesh Kumar, R.A. Kycia, Matthew A. C. Lamont, Jeffery M. Landgraf, K.D. Landry, Jerome Lauret, Alexei Lebedev, Richard Lednicky, J.H. Lee, W. Leight, Micheal J. LeVine, C. Li, W. Li, Xiaomei Li, Xiaomei Li, Y. Li, Z.M. Li, L.M. Lima, Michael A. Lisa, F. Liu, Tonko A. Ljubicic, William Joseph Llope, Ronald S. Longacre, X. Luo, G.L. Ma, Yu-Gang Ma, D.M.M.D. Madagodagettige Don, D.P. Mahapatra, Richard Daniel Majka, Spyridon Margetis, Christina Markert, H. Masui, Howard S. Matis, Daniel McDonald, Tom S. McShane, Nikolai G. Minaev, Saskia Mioduszewski, Bedangadas Mohanty, Mriganka Mouli Mondal, Dmitry A. Morozov, Marcelo Gameiro Munhoz, M.K. Mustafa, Basanta Kumar Nandi, Md. Nasim, Tapan Kumar Nayak, John M. Nelson, Larisa V. Nogach, S.Y. Noh, J. Novak, Sandibek B. Nurušev, Grazyna Janina Odyniec, Akio Ogawa, Kunsu Oh, Alice Ohlson, Vitaly A. Okorokov, E.W. Oldag, Renato Aparecido Negrao de Oliveira, Miloš Pachr, Brian S. Page, Susanta Kumar Pal, Y.X. Pan, Y. Pandit, Yuri Panebratsev, Tomasz Jan Pawlak, Bogdan Pawlik, Hua Pei, Chris Perkins, Wiktor Stanislaw Peryt, P. Pile, Mirko Planinic, Jan Marian Pluta, Donika Plyku, Nikola Poljak, Jeffrey Brent Porter, Arthur M. Poskanzer, Navneet Kumar Pruthi, Mariusz Przybycien, Prabhat Ranjan Pujahari, H. Qiu, Amilkar Quintero, Suvarna Ramachandran, Rashmi Raniwala, Sudhir Raniwala, Robert L. Ray, C.K. Riley, Hans Georg Ritter, Jabus B. Roberts, Oleg V. Rogačevskij, Juan L. Romero, J.F. Ross, Ankhi Roy, Lijuan Ruan, Jan Rusnak, Nihar Ranjan Sahoo, Pradip Kumar Sahu, Iwona Sakrejda, Sevil Salur, Andrzej Sandacz, Jack H. Sandweiss, Evan Sangaline, Amal Sarkar, Joachim Schambach, Rolf Paul Scharenberg, Alexander Schmah, William B. Schmidke, Norbert Schmitz, Janet Elizabeth Seger, Peter Seyboth, N. Shah, Ehtiram Shahaliev, Prashanth V. Shanmuganathan, M. Shao, B. Sharma, W.Q. Shen, S.S. Shi, Q.Y. Shou, Ernst P. Sichtermann, Rama Narayana Singaraju, M.J. Skoby, Dmitri V. Smirnov, Nikolai Smirnov, D. Solanki, Paul Richard Sorensen, Ulisses Gulart de Souza, Harold. M. Spinka, Brijesh Kumar Srivastava, T. D. Shirvel Stanislaus, J.R. Stevens, Reinhard Stock, Michail Nikolaevič Strichanov, Blair Stringfellow, Alexandre Alarcon do Passo Suaide, Michal Šumbera, X. Sun, X.M. Sun, Y. Sun, Z. Sun, Bernd Surrow, Dmitry N. Svirida, Timothy James MacNeil Symons, Alejandro Szanto de Toledo, Jun Takahashi, Aihong Tang, Z. Tang, Terence J. Tarnowsky, James H. Thomas, Anthony Robert Timmins, David Tlusty, Mikhail V. Tokarev, Stephen Trentalange, Robert E. Tribble, Prithwish Tribedy, Barbara Antonina Trzeciak, Oleg D. Tsai, J. Turnau, Thomas Ullrich, David G. Underwood, Gene Van Buren, Gerrit J. van Nieuwenhuizen, Joseph A. Vanfossen, Raghava Varma, Geraldo M. S. Vasconcelos, Alexander Nikolaevich Vasiliev, Róbert Vértesi, Flemming Videbæk, Yogendra P. Viyogi, Stanislav Vokal, A. Vossen, M. Wada, M. Walker, F. Wang, G. Wang, H. Wang, J.S. Wang, X.L. Wang, Y. Wang, Y. Wang, Grant Webb, Jason C. Webb, Gary D. Westfall, Howard Wieman, Scott W. Wissink, Richard Witt, Y.F. Wu, Z. Xiao, W. Xie, K. Xin, H. Xu, N. Xu, Qinghua Xu, Y. Xu, Z. Xu, W. Yan, C. Yang, Y. Yang, Y. Yang, Z. Ye, Pablo P. Yepes, L. Yi, K. Yip, In-Kwon Yoo, Y. Zawisza, Hanna Paulina Zbroszczyk, W. Zha, J.B. Zhang, J.L. Zhang, S. Zhang, X.P. Zhang, Y. Zhang, Z.P. Zhang, F. Zhao, J. Zhao, C. Zhong, X. Zhu, Y.H. Zhu, Youlia Zoulkarneeva, Maksym Zyzak

  • We report on a polarization measurement of inclusive J/ψ mesons in the di-electron decay channel at mid-rapidity at 2 < pT < 6 GeV/c in p + p collisions at √s = 200 GeV. Data were taken with the STAR detector at RHIC. The J/ψ polarization measurement should help to distinguish between different models of the J/ψ production mechanism since they predict different pT dependences of the J/ψ polarization. In this analysis, J/ψ polarization is studied in the helicity frame. The polarization parameter λθ measured at RHIC becomes smaller towards high pT , indicating more longitudinal J/ψ polarization as pT increases. The result is compared with predictions of presently available models.

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Author:Leszek AdamczykORCiDGND, J. Kevin Adkins, Geydar AgakishievGND, Madan Mohan AggarwalGND, Zubayer AhammedORCiD, Igor G. AlekseevORCiD, Jeremy Alford, Christopher Daniel AnsonORCiD, Alexey AparinORCiD, Dmitry A. ArkhipkinORCiDGND, Elke Caroline AschenauerORCiD, Georgy S. AverichevGND, Jan Balewski, A. Banerjee, Z. Barnovska, Dana Richard Beavis, Rene BellwiedGND, Anju BhasinORCiD, Ashok Kumar Bhati, P. Bhattarai, Hans Bichsel, Jaroslav BielčíkORCiDGND, Jana BielčíkováORCiDGND, Leslie C. BlandORCiD, Igor G. Bordyuzhin, W. Borowski, Jonathan Bouchet, Andrei V. Brandin, Samantha G. Brovko, Stephen L. Bültmann, Ivan Bunzarov, T.P. Burton, Joseph Butterworth, Helen Louise CainesORCiD, Manuel Calderón de la Barca SánchezORCiD, Daniel A. CebraORCiD, R. Cendejas, M.C. Cervantes, Petr ChaloupkaORCiD, Z. Chang, S. Chattopadhyay, H.F. Chen, J.H. Chen, L. Chen, J. Cheng, Michael Gerard Cherney, Alexei Chikanian, William ChristieORCiD, J. Chwastowski, M.J.M. Codrington, R. Corliss, John G. CramerGND, Henry J. CrawfordORCiD, X. Cui, Supriya DasORCiDGND, A. Davila Leyva, L.C. De Silva, R.R. Debbe, Tatiana G. DedovičGND, J. Deng, Anatoly A. Derevschikov, Rafael Derradi de SouzaORCiD, S. Dhamija, Benedetto di RuzzaORCiD, Lidia Didenko, Christopher DilksORCiD, F. Ding, P. Djawotho, X. Dong, James Lucus DrachenbergORCiD, James E. Draper, C.M. Du, Lloyd Edward Dunkelberger, James C. DunlopORCiD, Leonid G. Efimov, Jon M. Engelage, K.S. Engle, Geary Wareham Eppley, L. Eun, Olga Y. EvdokimovORCiD, Renee H. FatemiORCiD, Salvatore FazioORCiD, Jan FedorišinGND, Peter FilipORCiD, Evan FinchORCiD, Yuri V. FisyakORCiD, C.E. Flores, Carl A. Gagliardi, Dhevan Raja GangadharanORCiDGND, David Garand, Frank GeurtsORCiD, Adam GibsonORCiD, M. Girard, S. Gliske, David P. Grosnick, Y. Guo, Anik GuptaORCiD, S. Gupta, Włodzimierz Guryn, B. Haag, O. Hajkova, Ahmed M. HamedORCiD, L.-X. Han, R. Haque, John W. HarrisORCiDGND, J.P. Hays-Wehle, Steven Francis Heppelmann, Andrew S. HirschORCiDGND, Gerald W. Hoffmann, D.J. Hofman, S. Horvat, B. Huang, H.Z. Huang, X. Huang, Patrick Huck, Thomas J. HumanicORCiD, George J. Igo, William W. JacobsORCiD, H. Jang, Eleanor G. JuddORCiD, Sonia KabanaORCiD, Dmitry Kalinkin, K. Kang, Kolja KauderORCiD, Hongwei KeORCiD, Declan KeaneORCiD, Armen Kechechyan, A. Kesich, Z.H. Khan, D.P. Kikola, Ivan KiselORCiD, Adam Ryszard KisielORCiD, Donald D. Koetke, Thorsten KolleggerORCiDGND, J. Konzer, I. Koralt, Wolfgang K. KorschORCiD, L. Kotchenda, Peter KravtsovORCiD, Keith William Krueger, Igor Kulakov, Lokesh KumarORCiD, R.A. Kycia, Matthew A. C. Lamont, Jeffery M. Landgraf, K.D. Landry, Jerome LauretORCiD, Alexei Lebedev, Richard LednickyORCiD, J.H. Lee, W. Leight, Micheal J. LeVine, C. Li, W. Li, Xiaomei Li, Xiaomei Li, Y. Li, Z.M. Li, L.M. Lima, Michael A. LisaORCiDGND, F. Liu, Tonko A. Ljubicic, William Joseph LlopeORCiD, Ronald S. Longacre, X. Luo, G.L. Ma, Yu-Gang MaORCiD, D.M.M.D. Madagodagettige Don, D.P. Mahapatra, Richard Daniel MajkaORCiD, Spyridon Margetis, Christina MarkertORCiDGND, H. Masui, Howard S. MatisORCiD, Daniel McDonald, Tom S. McShane, Nikolai G. Minaev, Saskia MioduszewskiORCiD, Bedangadas MohantyORCiD, Mriganka Mouli MondalORCiD, Dmitry A. Morozov, Marcelo Gameiro MunhozORCiD, M.K. Mustafa, Basanta Kumar Nandi, Md. Nasim, Tapan Kumar NayakORCiD, John M. Nelson, Larisa V. Nogach, S.Y. Noh, J. Novak, Sandibek B. NuruševGND, Grazyna Janina Odyniec, Akio Ogawa, Kunsu OhORCiD, Alice OhlsonORCiDGND, Vitaly A. OkorokovORCiD, E.W. Oldag, Renato Aparecido Negrao de OliveiraORCiD, Miloš Pachr, Brian S. PageORCiD, Susanta Kumar Pal, Y.X. Pan, Y. Pandit, Yuri Panebratsev, Tomasz Jan Pawlak, Bogdan PawlikORCiD, Hua PeiORCiD, Chris Perkins, Wiktor Stanislaw Peryt, P. Pile, Mirko PlaninicORCiD, Jan Marian Pluta, Donika PlykuORCiD, Nikola PoljakORCiD, Jeffrey Brent Porter, Arthur M. PoskanzerORCiDGND, Navneet Kumar PruthiORCiD, Mariusz PrzybycienORCiD, Prabhat Ranjan PujahariORCiD, H. Qiu, Amilkar Quintero, Suvarna RamachandranORCiD, Rashmi RaniwalaORCiD, Sudhir RaniwalaORCiD, Robert L. RayORCiD, C.K. Riley, Hans Georg Ritter, Jabus B. Roberts, Oleg V. RogačevskijGND, Juan L. Romero, J.F. Ross, Ankhi Roy, Lijuan Ruan, Jan RusnakORCiD, Nihar Ranjan SahooORCiD, Pradip Kumar SahuORCiD, Iwona Sakrejda, Sevil SalurORCiDGND, Andrzej SandaczORCiD, Jack H. Sandweiss, Evan SangalineORCiD, Amal SarkarORCiD, Joachim SchambachORCiD, Rolf Paul Scharenberg, Alexander SchmahORCiDGND, William B. Schmidke, Norbert SchmitzGND, Janet Elizabeth SegerORCiD, Peter SeybothORCiDGND, N. Shah, Ehtiram Shahaliev, Prashanth V. ShanmuganathanORCiD, M. Shao, B. Sharma, W.Q. Shen, S.S. Shi, Q.Y. Shou, Ernst P. SichtermannORCiD, Rama Narayana Singaraju, M.J. Skoby, Dmitri V. SmirnovORCiD, Nikolai Smirnov, D. Solanki, Paul Richard SorensenORCiD, Ulisses Gulart de Souza, Harold. M. SpinkaORCiD, Brijesh Kumar Srivastava, T. D. Shirvel Stanislaus, J.R. Stevens, Reinhard StockGND, Michail Nikolaevič StrichanovORCiDGND, Blair Stringfellow, Alexandre Alarcon do Passo SuaideORCiD, Michal ŠumberaORCiD, X. Sun, X.M. Sun, Y. Sun, Z. Sun, Bernd SurrowORCiDGND, Dmitry N. SviridaORCiD, Timothy James MacNeil Symons, Alejandro Szanto de Toledo, Jun TakahashiORCiD, Aihong TangORCiD, Z. Tang, Terence J. Tarnowsky, James H. Thomas, Anthony Robert Timmins, David Tlusty, Mikhail V. Tokarev, Stephen TrentalangeORCiD, Robert E. Tribble, Prithwish TribedyORCiDGND, Barbara Antonina TrzeciakORCiD, Oleg D. Tsai, J. Turnau, Thomas UllrichORCiDGND, David G. UnderwoodORCiD, Gene Van BurenORCiD, Gerrit J. van Nieuwenhuizen, Joseph A. VanfossenORCiD, Raghava Varma, Geraldo M. S. Vasconcelos, Alexander Nikolaevich Vasiliev, Róbert VértesiORCiD, Flemming Videbæk, Yogendra P. Viyogi, Stanislav Vokal, A. Vossen, M. Wada, M. Walker, F. Wang, G. Wang, H. Wang, J.S. Wang, X.L. Wang, Y. Wang, Y. Wang, Grant Webb, Jason C. WebbORCiD, Gary D. WestfallGND, Howard Wieman, Scott W. WissinkORCiD, Richard WittORCiD, Y.F. Wu, Z. Xiao, W. Xie, K. Xin, H. Xu, N. Xu, Qinghua XuORCiD, Y. Xu, Z. Xu, W. Yan, C. Yang, Y. Yang, Y. Yang, Z. Ye, Pablo P. Yepes, L. Yi, K. Yip, In-Kwon YooORCiDGND, Y. Zawisza, Hanna Paulina ZbroszczykORCiD, W. Zha, J.B. Zhang, J.L. Zhang, S. Zhang, X.P. Zhang, Y. Zhang, Z.P. Zhang, F. Zhao, J. Zhao, C. Zhong, X. Zhu, Y.H. Zhu, Youlia Zoulkarneeva, Maksym ZyzakGND
URN:urn:nbn:de:hebis:30:3-699728
DOI:https://doi.org/10.1016/j.physletb.2014.10.049
ISSN:0370-2693
ISSN:1873-2445
Parent Title (English):Physics Letters B
Publisher:Elsevier
Place of publication:Amsterdam
Document Type:Article
Language:English
Year of Completion:2014
Year of first Publication:2014
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Creating Corporation:STAR Collaboration
Release Date:2022/09/27
Tag:Charmonia; Polarization; RHIC; STAR; Spin alignment
Volume:739.2014
Page Number:9
First Page:180
Last Page:188
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Sammlungen:Universitätspublikationen
Licence (German):License LogoCreative Commons - Namensnennung 4.0