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Title: Azimuthal asymmetries of back-to-back pi ± - (pi0, n, pi±) pairs in e + e - annihilation

Abstract

This work reports the first observation of azimuthal asymmetries around the thrust axis in eþe- annihilation of pairs of back-to-back charged pions in one hemisphere, and p0 and ? mesons in the opposite hemisphere. These results are complemented by a new analysis of pairs of back-to-back charged pions. The p0 and ? asymmetries rise with the relative momentum z of the detected hadrons as well as with the transverse momentum with respect to the thrust axis. These asymmetries are sensitive to the Collins fragmentation function H?1 and provide complementary information to previous measurements with charged pions and kaons in the final state. In particular, the ? final states will provide additional information on the flavor structure of H?1. This is the first measurement of the explicit transverse-momentum dependence of the Collins fragmentation function from Belle data. It uses a dataset of 980.4 fb-1 collected by the Belle experiment at or near a center-of-mass energy of 10.58 GeV.

Authors:
 [1];  [2];  [3];  [4];  [5];  [6];  [7];  [8];  [9];  [10];  [11];  [12];  [13];  [5];  [14];  [15];  [16];  [12];  [17];  [18] more »;  [19];  [19];  [20];  [21];  [22];  [23];  [24];  [25];  [26];  [27];  [5];  [28]; ORCiD logo [29];  [30];  [5];  [31];  [32];  [33];  [34];  [35];  [36];  [37];  [38];  [38];  [39];  [40];  [41];  [42];  [43];  [44];  [45];  [46];  [19];  [47];  [48];  [33];  [49];  [10];  [50];  [51];  [44];  [52];  [53];  [54];  [55];  [30];  [56];  [57];  [43];  [58];  [59];  [35];  [60];  [61];  [62];  [39];  [38];  [63];  [22];  [64];  [38];  [65];  [64];  [66];  [4];  [67];  [68];  [69];  [70];  [71];  [72];  [6];  [73];  [74];  [75];  [76];  [38];  [77];  [78];  [79];  [80];  [81];  [82];  [83];  [84];  [60];  [85];  [86];  [87];  [66];  [71];  [88];  [89];  [90];  [7];  [91];  [6];  [38];  [92];  [82];  [53];  [93];  [36];  [94];  [60];  [95];  [95];  [96];  [97];  [5];  [66];  [5] « less
  1. INDIANA UNIVERSITY
  2. Duke University
  3. Department of Physics, University of Tokyo, Tokyo
  4. Brookhaven National Laboratory
  5. Novosibirsk State University
  6. Moscow Institute of Physics and Technology
  7. Deutsches Elektronen-Synchrotron
  8. King Abdulaziz City for Science and Technology
  9. University of Sydney
  10. University of Mississippi
  11. Indian INstitute of Science Education and Research Mohali, SAS Nagar
  12. Charles University
  13. J. Stefan Institute
  14. JOZEF STEFAN INSTITUTE
  15. INFN-Sezione di Napoli
  16. Karlsruhe Institute of Technology
  17. Max-Planck-Institut fr Physik
  18. National Central University
  19. Hanyang University
  20. Korea Institute of Science and Technology Information
  21. Sungkyunkwan University
  22. Indian Institute of Technology
  23. WAYNE STATE UNIVERSITY
  24. Desy
  25. INFN Sezione di Napoli, 80126 Napoli
  26. LAL
  27. Grad Univ Adv Studies, SOKENDAJ, Hayama 2400193 Japan
  28. Deutsches ElektronenSynchrotron
  29. BATTELLE (PACIFIC NW LAB)
  30. Virginia Polytechnic Institute
  31. Indian Inst Technol Hyderabad, Hyderabad 5022285, Telangana, India
  32. Institut fr Experimentelle Kernphysik, Karlsruher Institut fr Technologie
  33. UNIVERSITY OF HAWAII
  34. Niigata University, Niigata
  35. Nara Women's University
  36. National Taiwan University
  37. Nagoya University
  38. High Energy Accelerator Research Organization (KEK)
  39. Osaka University
  40. Indiana University-Bloomington
  41. Gyeongsang, South Korea
  42. Beihang University
  43. University of Tokyo
  44. Kyungpook National University
  45. Deutsches Elektronen–Synchrotron
  46. Soongsil University
  47. Faculty of Mathematics and Physics, Charles University, Prague
  48. Univerza v Mariboru
  49. Univerza v Ljubljani
  50. BUDKER INSTITUTE OF NUCLEAR PHYSICS
  51. Yonsei University
  52. Peking University
  53. Max-Planck-Institut fur Physik
  54. Indian Institute of Technology Madras
  55. Ludwig-Maximilians-University Munich
  56. Fudan University
  57. University of Melbourne
  58. University of Miyazaki, Miyazaki
  59. INFN - Sezione di Napoli
  60. Niigata University
  61. Moscow Engineering Physics Institute
  62. INFN - Sezione di Torino
  63. Kyoto University
  64. H. Niewodniczanski Institute of Nuclear Physics
  65. Nippon Dental University, Niigata
  66. P.N. Lebedev Physical Institute of the Russian Academy of Sciences
  67. INFN, Sez Napoli, I-80126, Naples, Italy
  68. Indian Institute of Science Education and Research Mohali
  69. Technische Universität München
  70. Luther College
  71. J Stefan Institute
  72. VIRGINIA POLYTECHNIC INSTITUTE
  73. Forschungszenitrum, Julich, D-52425 Julich, Germany
  74. Institut fur Expermientelle Kernphysik, Karlsruher Institut fur Tehcnolgie
  75. INFN, Sez Napoli, I-80126 Naples, Italy
  76. Client
  77. High Energy Accelerator Research Organization-KEK
  78. Tohoku University
  79. UNIVERSITY OF PITTSBURGH
  80. Ecole Polytechnique Federale de Lausanne
  81. Ikerbasque
  82. University of Hawaii
  83. Institute of High Energy Physics
  84. RIKEN BNL Research Center
  85. Yamagata University
  86. NATIONAL TAIWAN UNIVERSITY
  87. Max-Planck-Institut für Physik
  88. Virginia Polytechnic Institute and State University
  89. Showa Pharmaceutical University
  90. Advanced Science Research Center, Japan Atomic Energy Agency, Naka
  91. Tokyo Institute of Technology
  92. Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie
  93. National United University
  94. Royal Netherlands Meteorological Institute
  95. Korea University
  96. DESY, D22607 Hamburg, Germany
  97. University of Science and Technology of China
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1577439
Report Number(s):
PNNL-SA-149747
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Physical Review. D, Particles, Fields, Gravitation, and Cosmology
Additional Journal Information:
Journal Volume: 100; Journal Issue: 9
Country of Publication:
United States
Language:
English

Citation Formats

Li, Hairong, Vossen, Anselm G., Aihara, H, Asner, David, Aulchenko, V, Aushev, T, Babu, V, Badhrees, I, Bakich, A M., Bennett, J, Bhardwaj, V, Bilka, T, Biswal, J, Bobrov, A, Bracko, Marko, Campajola, M, Cao, Lu, Cervenkov, D, Chekelian, V, Chen, A, Cheon, B G., Cho, H.E., Cho, K, Choi, Y, Choudhury, S, Cinabro, David A., Cunliffe, Samuel T., Di Capua, F, Di Carlo, Salvatore, Dong, Thanh V., Eidelman, S, Ferber, T, Fulsom, Bryan G., Gaur, Vipin, Garmash, A, Giri, Anjan, Goldenzweig, P, Hartbrich, Oskar, Hayasaka, K, Hayashii, H, Huang, K, Inami, K, Ishikawa, A, Itoh, R, Iwasaki, M, Jacobs, W W., Jang, Eunji, Jia, S, Jin, Y, Kang, K H., Karyan, G, Kim, D Y., Kim, S H., Kodys, P, Korpar, S, Kotchetkov, Dmitri V., Krizan, P, Kroeger, Robert S., Krokovny, Pavel, Kwon, Y J, Lee, S.C., Li, Y.B., Li Gioi, L, Libby, J, Lieret, K., Liventsev, D, Luo, T, Macqueen, C, Masuda, M, Matsuda, T., Merola, M, Miyabayashi, K, Miyata, H, Mizuk, R, Mussa, R, Nakano, T, Nakao, M, Naruki, Megumi, Nath, K, Natkaniec, Z, Nishida, S, Ono, H, Ostrowicz, W, Pakhlova, G, Pal, Bilas K., Pardi, Silvio, Patra, S, Paul, S, Pedlar, Todd, Pestotnik, R, Piilonen, Leo E., Popov, V, Prencipe, Elisabetta, Prim, M, Russo, Guido, Sahoo, Dipankar, Sakai, Y, Santelj, L, Sanuki, T, Savinov, Vladimir, Schneider, O, Schnell, G, Schueler, J, Schwanda, C, Seidl, R, Seino, Y, Senyo, K, Shiu, Jing-Ge, Simon, F, Solovieva, E, Staric, M, Stottler, Z.S., Takizawa, M, Tanida, K, Tenchini, F, Uchida, M, Uglov, T, Uno, S, Van Tonder, R, Varner, G, Wang, B, Wang, C H., Wang, M Z., Wang, P, Watanabe, M, Won, E, Yang, S B., Ye, Hua, Zhang, Z P., Zhilich, V, Zhukova, V, and Zhulanov, V. Azimuthal asymmetries of back-to-back pi ± - (pi0, n, pi±) pairs in e + e - annihilation. United States: N. p., 2019. Web. doi:10.1103/PhysRevD.100.092008.
Li, Hairong, Vossen, Anselm G., Aihara, H, Asner, David, Aulchenko, V, Aushev, T, Babu, V, Badhrees, I, Bakich, A M., Bennett, J, Bhardwaj, V, Bilka, T, Biswal, J, Bobrov, A, Bracko, Marko, Campajola, M, Cao, Lu, Cervenkov, D, Chekelian, V, Chen, A, Cheon, B G., Cho, H.E., Cho, K, Choi, Y, Choudhury, S, Cinabro, David A., Cunliffe, Samuel T., Di Capua, F, Di Carlo, Salvatore, Dong, Thanh V., Eidelman, S, Ferber, T, Fulsom, Bryan G., Gaur, Vipin, Garmash, A, Giri, Anjan, Goldenzweig, P, Hartbrich, Oskar, Hayasaka, K, Hayashii, H, Huang, K, Inami, K, Ishikawa, A, Itoh, R, Iwasaki, M, Jacobs, W W., Jang, Eunji, Jia, S, Jin, Y, Kang, K H., Karyan, G, Kim, D Y., Kim, S H., Kodys, P, Korpar, S, Kotchetkov, Dmitri V., Krizan, P, Kroeger, Robert S., Krokovny, Pavel, Kwon, Y J, Lee, S.C., Li, Y.B., Li Gioi, L, Libby, J, Lieret, K., Liventsev, D, Luo, T, Macqueen, C, Masuda, M, Matsuda, T., Merola, M, Miyabayashi, K, Miyata, H, Mizuk, R, Mussa, R, Nakano, T, Nakao, M, Naruki, Megumi, Nath, K, Natkaniec, Z, Nishida, S, Ono, H, Ostrowicz, W, Pakhlova, G, Pal, Bilas K., Pardi, Silvio, Patra, S, Paul, S, Pedlar, Todd, Pestotnik, R, Piilonen, Leo E., Popov, V, Prencipe, Elisabetta, Prim, M, Russo, Guido, Sahoo, Dipankar, Sakai, Y, Santelj, L, Sanuki, T, Savinov, Vladimir, Schneider, O, Schnell, G, Schueler, J, Schwanda, C, Seidl, R, Seino, Y, Senyo, K, Shiu, Jing-Ge, Simon, F, Solovieva, E, Staric, M, Stottler, Z.S., Takizawa, M, Tanida, K, Tenchini, F, Uchida, M, Uglov, T, Uno, S, Van Tonder, R, Varner, G, Wang, B, Wang, C H., Wang, M Z., Wang, P, Watanabe, M, Won, E, Yang, S B., Ye, Hua, Zhang, Z P., Zhilich, V, Zhukova, V, & Zhulanov, V. Azimuthal asymmetries of back-to-back pi ± - (pi0, n, pi±) pairs in e + e - annihilation. United States. doi:10.1103/PhysRevD.100.092008.
Li, Hairong, Vossen, Anselm G., Aihara, H, Asner, David, Aulchenko, V, Aushev, T, Babu, V, Badhrees, I, Bakich, A M., Bennett, J, Bhardwaj, V, Bilka, T, Biswal, J, Bobrov, A, Bracko, Marko, Campajola, M, Cao, Lu, Cervenkov, D, Chekelian, V, Chen, A, Cheon, B G., Cho, H.E., Cho, K, Choi, Y, Choudhury, S, Cinabro, David A., Cunliffe, Samuel T., Di Capua, F, Di Carlo, Salvatore, Dong, Thanh V., Eidelman, S, Ferber, T, Fulsom, Bryan G., Gaur, Vipin, Garmash, A, Giri, Anjan, Goldenzweig, P, Hartbrich, Oskar, Hayasaka, K, Hayashii, H, Huang, K, Inami, K, Ishikawa, A, Itoh, R, Iwasaki, M, Jacobs, W W., Jang, Eunji, Jia, S, Jin, Y, Kang, K H., Karyan, G, Kim, D Y., Kim, S H., Kodys, P, Korpar, S, Kotchetkov, Dmitri V., Krizan, P, Kroeger, Robert S., Krokovny, Pavel, Kwon, Y J, Lee, S.C., Li, Y.B., Li Gioi, L, Libby, J, Lieret, K., Liventsev, D, Luo, T, Macqueen, C, Masuda, M, Matsuda, T., Merola, M, Miyabayashi, K, Miyata, H, Mizuk, R, Mussa, R, Nakano, T, Nakao, M, Naruki, Megumi, Nath, K, Natkaniec, Z, Nishida, S, Ono, H, Ostrowicz, W, Pakhlova, G, Pal, Bilas K., Pardi, Silvio, Patra, S, Paul, S, Pedlar, Todd, Pestotnik, R, Piilonen, Leo E., Popov, V, Prencipe, Elisabetta, Prim, M, Russo, Guido, Sahoo, Dipankar, Sakai, Y, Santelj, L, Sanuki, T, Savinov, Vladimir, Schneider, O, Schnell, G, Schueler, J, Schwanda, C, Seidl, R, Seino, Y, Senyo, K, Shiu, Jing-Ge, Simon, F, Solovieva, E, Staric, M, Stottler, Z.S., Takizawa, M, Tanida, K, Tenchini, F, Uchida, M, Uglov, T, Uno, S, Van Tonder, R, Varner, G, Wang, B, Wang, C H., Wang, M Z., Wang, P, Watanabe, M, Won, E, Yang, S B., Ye, Hua, Zhang, Z P., Zhilich, V, Zhukova, V, and Zhulanov, V. Fri . "Azimuthal asymmetries of back-to-back pi ± - (pi0, n, pi±) pairs in e + e - annihilation". United States. doi:10.1103/PhysRevD.100.092008.
@article{osti_1577439,
title = {Azimuthal asymmetries of back-to-back pi ± - (pi0, n, pi±) pairs in e + e - annihilation},
author = {Li, Hairong and Vossen, Anselm G. and Aihara, H and Asner, David and Aulchenko, V and Aushev, T and Babu, V and Badhrees, I and Bakich, A M. and Bennett, J and Bhardwaj, V and Bilka, T and Biswal, J and Bobrov, A and Bracko, Marko and Campajola, M and Cao, Lu and Cervenkov, D and Chekelian, V and Chen, A and Cheon, B G. and Cho, H.E. and Cho, K and Choi, Y and Choudhury, S and Cinabro, David A. and Cunliffe, Samuel T. and Di Capua, F and Di Carlo, Salvatore and Dong, Thanh V. and Eidelman, S and Ferber, T and Fulsom, Bryan G. and Gaur, Vipin and Garmash, A and Giri, Anjan and Goldenzweig, P and Hartbrich, Oskar and Hayasaka, K and Hayashii, H and Huang, K and Inami, K and Ishikawa, A and Itoh, R and Iwasaki, M and Jacobs, W W. and Jang, Eunji and Jia, S and Jin, Y and Kang, K H. and Karyan, G and Kim, D Y. and Kim, S H. and Kodys, P and Korpar, S and Kotchetkov, Dmitri V. and Krizan, P and Kroeger, Robert S. and Krokovny, Pavel and Kwon, Y J and Lee, S.C. and Li, Y.B. and Li Gioi, L and Libby, J and Lieret, K. and Liventsev, D and Luo, T and Macqueen, C and Masuda, M and Matsuda, T. and Merola, M and Miyabayashi, K and Miyata, H and Mizuk, R and Mussa, R and Nakano, T and Nakao, M and Naruki, Megumi and Nath, K and Natkaniec, Z and Nishida, S and Ono, H and Ostrowicz, W and Pakhlova, G and Pal, Bilas K. and Pardi, Silvio and Patra, S and Paul, S and Pedlar, Todd and Pestotnik, R and Piilonen, Leo E. and Popov, V and Prencipe, Elisabetta and Prim, M and Russo, Guido and Sahoo, Dipankar and Sakai, Y and Santelj, L and Sanuki, T and Savinov, Vladimir and Schneider, O and Schnell, G and Schueler, J and Schwanda, C and Seidl, R and Seino, Y and Senyo, K and Shiu, Jing-Ge and Simon, F and Solovieva, E and Staric, M and Stottler, Z.S. and Takizawa, M and Tanida, K and Tenchini, F and Uchida, M and Uglov, T and Uno, S and Van Tonder, R and Varner, G and Wang, B and Wang, C H. and Wang, M Z. and Wang, P and Watanabe, M and Won, E and Yang, S B. and Ye, Hua and Zhang, Z P. and Zhilich, V and Zhukova, V and Zhulanov, V},
abstractNote = {This work reports the first observation of azimuthal asymmetries around the thrust axis in eþe- annihilation of pairs of back-to-back charged pions in one hemisphere, and p0 and ? mesons in the opposite hemisphere. These results are complemented by a new analysis of pairs of back-to-back charged pions. The p0 and ? asymmetries rise with the relative momentum z of the detected hadrons as well as with the transverse momentum with respect to the thrust axis. These asymmetries are sensitive to the Collins fragmentation function H?1 and provide complementary information to previous measurements with charged pions and kaons in the final state. In particular, the ? final states will provide additional information on the flavor structure of H?1. This is the first measurement of the explicit transverse-momentum dependence of the Collins fragmentation function from Belle data. It uses a dataset of 980.4 fb-1 collected by the Belle experiment at or near a center-of-mass energy of 10.58 GeV.},
doi = {10.1103/PhysRevD.100.092008},
journal = {Physical Review. D, Particles, Fields, Gravitation, and Cosmology},
number = 9,
volume = 100,
place = {United States},
year = {2019},
month = {11}
}

Works referenced in this record:

The spin structure of the nucleon
journal, April 2013

  • Aidala, Christine A.; Bass, Steven D.; Hasch, Delia
  • Reviews of Modern Physics, Vol. 85, Issue 2
  • DOI: 10.1103/RevModPhys.85.655

Parton fragmentation functions
journal, November 2016


Comparison of spin asymmetries and cross sections in π0 production by 200 GeV polarized antiprotons and protons
journal, May 1991


High-xT single-spin asymmetry in π0 and η production at xF=0 by 200 GeV polarized antiprotons and protons
journal, February 1992


Measurement of single spin asymmetry in η-meson production in p↑p and p̄↑p interactions in the beam fragmentation region at 200 GeV/c
journal, January 1998


Transverse single-spin asymmetry and cross section for π 0 and η mesons at large Feynman x in p + p collisions at s = 200 GeV
journal, September 2012


Cross section and transverse single-spin asymmetry of η mesons in p + p collisions at s = 200 GeV at forward rapidity
journal, October 2014


Transverse Quark Polarization in Large- p T Reactions, e + e Jets, and Leptoproduction: A Test of Quantum Chromodynamics
journal, December 1978


Production of dimuons from high-energy polarized proton-proton collisions
journal, May 1979


Transversely polarized parton densities, their evolution and their measurement
journal, December 1990

  • Artru, X.; Mekhfi, M.
  • Zeitschrift für Physik C Particles and Fields, Vol. 45, Issue 4
  • DOI: 10.1007/BF01556280

Chiral-odd parton distributions and Drell-Yan processes
journal, May 1992


Measuring the transverse polarization of quarks in the proton
journal, September 1992

  • Cortes, J. L.; Pire, B.; Ralston, J. P.
  • Zeitschrift für Physik C Particles and Fields, Vol. 55, Issue 3
  • DOI: 10.1007/BF01565099

Measuring transversity densities in singly polarized hadron-hadron and lepton-hadron collisions
journal, June 1994


Two-hadron interference fragmentation functions. I. General framework
journal, July 2000


Single-Spin Asymmetries in Semi-Inclusive Deep-Inelastic Scattering on a Transversely Polarized Hydrogen Target
journal, January 2005


Sum rules for the T -odd fragmentation functions
journal, March 2000


Measurement of Azimuthal Asymmetries in Inclusive Production of Hadron Pairs in e + e Annihilation at Belle
journal, June 2006


Measurement of azimuthal asymmetries in inclusive production of hadron pairs in e + e annihilation at s = 10.58 GeV
journal, August 2008


Transversity and Collins functions from SIDIS and e + e data
journal, March 2007


Measurement of Collins asymmetries in inclusive production of charged pion pairs in e + e annihilation at BABAR
journal, September 2014


Collins asymmetries in inclusive charged K K and K π pairs produced in e + e annihilation
journal, December 2015


Measurement of Azimuthal Asymmetries in Inclusive Charged Dipion Production in e + e Annihilations at s = 3.65 GeV
journal, January 2016


Single-spin asymmetries: The Trento conventions
journal, December 2004


Angular dependences in inclusive two-hadron production at BELLE
journal, January 2009


Leading asymmetries in two-hadron production in e+e− annihilation at the Z pole
journal, April 1998


Single spin asymmetries in inclusive hadron production from semiinclusive DIS to hadronic collisions: Universality and phenomenology
journal, March 2008


Collins effect in semiinclusive deeply inelastic scattering and in electron-positron-annihilation
journal, May 2006


The Belle detector
journal, February 2002

  • Abashian, A.; Gotow, K.; Morgan, N.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 479, Issue 1
  • DOI: 10.1016/S0168-9002(01)02013-7

Physics achievements from the Belle experiment
journal, January 2012

  • Brodzicka, J.; Browder, T.; Chang, P.
  • Progress of Theoretical and Experimental Physics, Vol. 2012, Issue 1
  • DOI: 10.1093/ptep/pts072

Overview of the KEKB accelerators
journal, February 2003

  • Kurokawa, S.; Kikutani, E.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 499, Issue 1
  • DOI: 10.1016/S0168-9002(02)01771-0

Achievements of KEKB
journal, January 2013

  • Abe, T.; Akai, K.; Akasaka, N.
  • Progress of Theoretical and Experimental Physics, Vol. 2013, Issue 3
  • DOI: 10.1093/ptep/pts102

Belle electromagnetic calorimeter
journal, November 2002

  • Miyabayashi, Kenkichi
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 494, Issue 1-3
  • DOI: 10.1016/S0168-9002(02)01483-3

Observation of Transverse Polarization Asymmetries of Charged Pion Pairs in e + e Annihilation near s = 10.58 GeV
journal, August 2011


PYTHIA 6.4 physics and manual
journal, May 2006


The EvtGen particle decay simulation package
journal, April 2001

  • Lange, David J.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 462, Issue 1-2
  • DOI: 10.1016/S0168-9002(01)00089-4

Transverse-momentum-dependent fragmentation functions in e+e- annihilation
journal, June 2016


Effects of transversity in deep-inelastic scattering by polarized protons
journal, September 2010