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Transverse spin-dependent azimuthal correlations of charged pion pairs measured in p + p collisions at s=500 GeV

  • L. Adamczyk
  • , J. R. Adams
  • , J. K. Adkins
  • , G. Agakishiev
  • , M. M. Aggarwal
  • , Z. Ahammed
  • , N. N. Ajitanand
  • , I. Alekseev
  • , D. M. Anderson
  • , R. Aoyama
  • , A. Aparin
  • , D. Arkhipkin
  • , E. C. Aschenauer
  • , M. U. Ashraf
  • , A. Attri
  • , G. S. Averichev
  • , V. Bairathi
  • , K. Barish
  • , A. Behera
  • , R. Bellwied
  • A. Bhasin, A. K. Bhati, P. Bhattarai, J. Bielcik, J. Bielcikova, L. C. Bland, I. G. Bordyuzhin, J. Bouchet, J. D. Brandenburg, A. V. Brandin, D. Brown, J. Bryslawskyj, I. Bunzarov, J. Butterworth, H. Caines, M. Calderón de la Barca Sánchez, J. M. Campbell, D. Cebra, I. Chakaberia, P. Chaloupka, Z. Chang, N. Chankova-Bunzarova, A. Chatterjee, S. Chattopadhyay, J. H. Chen, X. Chen, X. Chen, J. Cheng, M. Cherney, W. Christie, G. Contin, H. J. Crawford, T. G. Dedovich, J. Deng, I. M. Deppner, A. A. Derevschikov, L. Didenko, C. Dilks, X. Dong, J. L. Drachenberg, J. E. Draper, J. C. Dunlop, L. G. Efimov, N. Elsey, J. Engelage, G. Eppley, R. Esha, S. Esumi, O. Evdokimov, J. Ewigleben, O. Eyser, R. Fatemi, S. Fazio, P. Federic, P. Federicova, J. Fedorisin, Z. Feng, P. Filip, E. Finch, Y. Fisyak, C. E. Flores, J. Fujita, L. Fulek, C. A. Gagliardi, F. Geurts, A. Gibson, M. Girard, D. Grosnick, D. S. Gunarathne, Y. Guo, A. Gupta, W. Guryn, A. I. Hamad, A. Hamed, A. Harlenderova, J. W. Harris, L. He, S. Heppelmann, S. Heppelmann, N. Herrmann, A. Hirsch, S. Horvat, X. Huang, H. Z. Huang, T. Huang, B. Huang, T. J. Humanic, P. Huo, G. Igo, W. W. Jacobs, A. Jentsch, J. Jia, K. Jiang, S. Jowzaee, E. G. Judd, S. Kabana, D. Kalinkin, K. Kang, D. Kapukchyan, K. Kauder, H. W. Ke, D. Keane, A. Kechechyan, Z. Khan, D. P. Kikoła, C. Kim, I. Kisel, A. Kisiel, L. Kochenda, M. Kocmanek, T. Kollegger, L. K. Kosarzewski, A. F. Kraishan, L. Krauth, P. Kravtsov, K. Krueger, N. Kulathunga, L. Kumar, J. Kvapil, J. H. Kwasizur, R. Lacey, J. M. Landgraf, K. D. Landry, J. Lauret, A. Lebedev, R. Lednicky, J. H. Lee, W. Li, C. Li, X. Li, Y. Li, J. Lidrych, T. Lin, M. A. Lisa, Y. Liu, H. Liu, F. Liu, P. Liu, T. Ljubicic, W. J. Llope, M. Lomnitz, R. S. Longacre, X. Luo, S. Luo, L. Ma, Y. G. Ma, G. L. Ma, R. Ma, N. Magdy, R. Majka, D. Mallick, S. Margetis, C. Markert, H. S. Matis, D. Mayes, K. Meehan, J. C. Mei, Z. W. Miller, N. G. Minaev, S. Mioduszewski, D. Mishra, S. Mizuno, B. Mohanty, M. M. Mondal, D. A. Morozov, M. K. Mustafa, Md Nasim, T. K. Nayak, J. M. Nelson, D. B. Nemes, M. Nie, G. Nigmatkulov, T. Niida, L. V. Nogach, T. Nonaka, S. B. Nurushev, G. Odyniec, A. Ogawa, K. Oh, V. A. Okorokov, D. Olvitt, B. S. Page, R. Pak, Y. Pandit, Y. Panebratsev, B. Pawlik, H. Pei, C. Perkins, J. Pluta, K. Poniatowska, J. Porter, M. Posik, N. K. Pruthi, M. Przybycien, J. Putschke, A. Quintero, S. Ramachandran, R. L. Ray, R. Reed, M. J. Rehbein, H. G. Ritter, J. B. Roberts, O. V. Rogachevskiy, J. L. Romero, J. D. Roth, L. Ruan, J. Rusnak, O. Rusnakova, N. R. Sahoo, P. K. Sahu, S. Salur, J. Sandweiss, M. Saur, J. Schambach, A. M. Schmah, W. B. Schmidke, N. Schmitz, B. R. Schweid, J. Seger, M. Sergeeva, R. Seto, P. Seyboth, N. Shah, E. Shahaliev, P. V. Shanmuganathan, M. Shao, W. Q. Shen, S. S. Shi, Z. Shi, Q. Y. Shou, E. P. Sichtermann, R. Sikora, M. Simko, S. Singha, M. J. Skoby, N. Smirnov, D. Smirnov, W. Solyst, P. Sorensen, H. M. Spinka, B. Srivastava, T. D.S. Stanislaus, D. J. Stewart, M. Strikhanov, B. Stringfellow, A. A.P. Suaide, T. Sugiura, M. Sumbera, B. Summa, X. Sun, X. M. Sun, Y. Sun, B. Surrow, D. N. Svirida, Z. Tang, A. H. Tang, A. Taranenko, T. Tarnowsky, A. Tawfik, J. Thäder, J. H. Thomas, A. R. Timmins, D. Tlusty, T. Todoroki, M. Tokarev, S. Trentalange, R. E. Tribble, P. Tribedy, S. K. Tripathy, B. A. Trzeciak, O. D. Tsai, B. Tu, T. Ullrich, D. G. Underwood, I. Upsal, G. Van Buren, G. van Nieuwenhuizen, A. N. Vasiliev, F. Videbæk, S. Vokal, S. A. Voloshin, A. Vossen, G. Wang, Y. Wang, Y. Wang, F. Wang, G. Webb, J. C. Webb, L. Wen, G. D. Westfall, H. Wieman, S. W. Wissink, R. Witt, Y. Wu, Z. G. Xiao, G. Xie, W. Xie, N. Xu, Y. F. Xu, Q. H. Xu, Z. Xu, Y. Yang, C. Yang, S. Yang, Q. Yang, Z. Ye, L. Yi, K. Yip, I. K. Yoo, H. Zbroszczyk, W. Zha, J. B. Zhang, J. Zhang, S. Zhang, J. Zhang, S. Zhang, Z. Zhang, Y. Zhang, L. Zhang, X. P. Zhang, J. Zhao, C. Zhong, C. Zhou, L. Zhou, X. Zhu, Z. Zhu, M. Zyzak
  • AGH University of Krakow
  • Ohio State University
  • University of Kentucky
  • Joint Institute for Nuclear Research
  • Panjab University
  • Variable Energy Cyclotron Centre India
  • Stony Brook University
  • Alikhanov Institute for Theoretical and Experimental Physics
  • Moscow Engineering Physics Institute
  • Texas A&M University
  • University of Tsukuba
  • Brookhaven National Laboratory
  • Tsinghua University
  • National Institute of Science Education and Research
  • University of California at Riverside
  • University of Houston
  • University of Jammu
  • University of Texas at Austin
  • Czech Technical University in Prague
  • Czech Academy of Sciences
  • Kent State University
  • Rice University
  • Lehigh University
  • Yale University
  • University of California at Davis
  • Chinese Academy of Sciences
  • CAS - Institute of Modern Physics
  • University of Science and Technology of China
  • Creighton University
  • Lawrence Berkeley National Laboratory
  • University of California at Berkeley
  • Shandong University
  • Heidelberg University 
  • Institute for High Energy Physics
  • Pennsylvania State University
  • Lamar University
  • Wayne State University
  • University of Illinois at Chicago
  • Central China Normal University
  • Southern Connecticut State University
  • Valparaiso University
  • Warsaw University of Technology
  • Temple University
  • Purdue University
  • University of California at Los Angeles
  • National Cheng Kung University
  • Indiana University Bloomington
  • Goethe University Frankfurt
  • Argonne National Laboratory
  • Institute of Physics Bhubaneswar
  • Pusan National University
  • Institute of Nuclear Physics
  • Rutgers - The State University of New Jersey, New Brunswick
  • Max Planck Institute for Physics (Werner Heisenberg Institute)
  • Universidade de São Paulo
  • Michigan State University
  • World Laboratory for Cosmology and Particle Physics (WLCAPP)
  • United States Naval Academy

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

The transversity distribution, which describes transversely polarized quarks in transversely polarized nucleons, is a fundamental component of the spin structure of the nucleon, and is only loosely constrained by global fits to existing semi-inclusive deep inelastic scattering (SIDIS) data. In transversely polarized p+p collisions it can be accessed using transverse polarization dependent fragmentation functions which give rise to azimuthal correlations between the polarization of the struck parton and the final state scalar mesons. This letter reports on spin dependent di-hadron correlations measured by the STAR experiment. The new dataset corresponds to 25 pb−1 integrated luminosity of p+p collisions at s=500 GeV, an increase of more than a factor of ten compared to our previous measurement at s=200 GeV. Non-zero asymmetries sensitive to transversity are observed at a Q2 of several hundred GeV and are found to be consistent with the former measurement and a model calculation. We expect that these data will enable an extraction of transversity with comparable precision to current SIDIS datasets but at much higher momentum transfers where subleading effects are suppressed.

Original languageEnglish
Pages (from-to)332-339
Number of pages8
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume780
DOIs
StatePublished - May 10 2018

Keywords

  • Di-hadron correlations
  • Interference fragmentation function
  • Transversity

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