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Sea quark and gluon contents of light mesons at low Q2 scale

  • H. NematollahiEmail author
  • M. M. Yazdanpanah
Regular Article
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Abstract.

We investigate the contributions of sea quarks and gluon to the structure of pion and kaon at low Q2 scale. To this end, we calculate the sea quark and gluon distribution functions of these mesons applying the modified chiral quark model ( \( \chi QM\) . We also compute the total momentum fraction which is carried by sea quarks and gluon in \( \pi^{+}_{}\) and K+ mesons. It is found that sea quarks and gluon carry about 30% of total momentum of the light mesons at \( Q^2=0.25\) GeV^2. Furthermore, it is shown that the gluon contents of pion and kaon are different. On the other hand, we obtain the quark-anti quark asymmetry of the strange sea and down sea in \( \pi^{+}_{}\) and K+, respectively. These asymmetries are determined based on the modified \( \chi\)QM due to the chiral symmetry breaking.

References

  1. 1.
    NA3 Collaboration (J. Badier et al.), Z. Phys. C 18, 281 (1983)Google Scholar
  2. 2.
    NA10 Collaboration (B. Betev et al.), Z. Phys. C 28, 15 (1985)Google Scholar
  3. 3.
    J.S. Conway et al., Phys. Rev. D 39, 92 (1989)ADSGoogle Scholar
  4. 4.
    J. Badier et al., Phys. Lett. B 93, 354 (1980)ADSGoogle Scholar
  5. 5.
    T. Horn, C.D. Roberts, J. Phys. G 43, 073001 (2016)ADSGoogle Scholar
  6. 6.
    R.J. Holt, C.D. Roberts, Rev. Mod. Phys. 82, 2991 (2010)ADSGoogle Scholar
  7. 7.
    M. Alberg, J. Tibbals, Phys. Lett. B 709, 370 (2012)ADSGoogle Scholar
  8. 8.
    K. Wijesooriya, P.E. Reimer, R.J. Holt, Phys. Rev. C 72, 065203 (2005)ADSGoogle Scholar
  9. 9.
    T. Frederico, G.A. Miller, Phys. Rev. D 50, 210 (1994)ADSGoogle Scholar
  10. 10.
    A. Szczepaniak, C.-R. Ji, S.R. Cotanch, Phys. Rev. D 49, 3466 (1994)ADSGoogle Scholar
  11. 11.
    M. Glück, E. Reya, M. Stratmann, Eur. Phys. J. C 2, 159 (1998)ADSGoogle Scholar
  12. 12.
    M. Glück, E. Reya, I. Schienbein, Eur. Phys. J. C 10, 313 (1999)ADSGoogle Scholar
  13. 13.
    C. Avila, J.C. Sanabria, J. Magnin, Phys. Rev. D 67, 034022 (2003)ADSGoogle Scholar
  14. 14.
    H.R. Christiansen, J. Magnin, Phys. Rev. D 63, 014001 (2000)ADSGoogle Scholar
  15. 15.
    T. Nguyen, A. Bashir, C.D. Roberts, P.C. Tandy, Phys. Rev. C 83, 062201 (2011)ADSGoogle Scholar
  16. 16.
    M.B. Hecht, C.D. Roberts, S.M. Schmidt, Phys. Rev. C 63, 025213 (2001)ADSGoogle Scholar
  17. 17.
    P. Maris, C.D. Roberts, Int. J. Mod. Phys. E 12, 297 (2003)ADSGoogle Scholar
  18. 18.
    J.C.R. Bloch et al., Phys. Rev. C 60, 062201 (1999)ADSGoogle Scholar
  19. 19.
    J.C.R. Bloch, C.D. Roberts, S.M. Schmidt, Phys. Rev. C 61, 065207 (2000)ADSGoogle Scholar
  20. 20.
    T. Shigetani, K. Suzuki, H. Toki, Phys. Lett. B 308, 383 (1993)ADSGoogle Scholar
  21. 21.
    R.M. Davidson, E. Ruiz Arriola, Phys. Lett. B 348, 163 (1995)ADSGoogle Scholar
  22. 22.
    H. Weigel, E. Ruiz Arriola, L.P. Gamberg, Nucl. Phys. B 560, 383 (1999)ADSGoogle Scholar
  23. 23.
    W. Bentz, T. Hama, T. Matsuki, K. Yazaki, Nucl. Phys. A 651, 143 (1999)ADSGoogle Scholar
  24. 24.
    M. Glück, E. Reya, A. Vogt, Z. Phys. C 53, 651 (1992)ADSGoogle Scholar
  25. 25.
    P.T.P. Hutauruk, I.C. Cloët, A.W. Thomas, Phys. Rev. C 94, 035201 (2016)ADSGoogle Scholar
  26. 26.
    C. Chen et al., Phys. Rev. D 93, 074021 (2016)ADSGoogle Scholar
  27. 27.
    M. Aicher, A. Schäfer, W. Vogelsang, Phys. Rev. Lett. 105, 252003 (2010)ADSGoogle Scholar
  28. 28.
    S. Weinberg, Physica A 96, 327 (1979)ADSGoogle Scholar
  29. 29.
    A. Manohar, H. Georgi, Nucl. Phys. B 234, 189 (1984)ADSGoogle Scholar
  30. 30.
    L.Ya. Glozman, D.O. Riska, Phys. Rep. 268, 263 (1996)ADSGoogle Scholar
  31. 31.
    L.Ya. Glozman, Z. Papp, Willibald Plessas, Phys. Lett. B 381, 311 (1996)ADSGoogle Scholar
  32. 32.
    L.Ya. Glozman, Willibald Plessas, K. Varga, R.F. Wagenbrunn, Nucl. Phys. A 631, 469c (1998)ADSGoogle Scholar
  33. 33.
    L.Ya. Glozman, Willibald Plessas, K. Varga, Phys. Rev. D 58, 094030 (1998)ADSGoogle Scholar
  34. 34.
    R.F. Wagenbrunn et al., Phys. Lett. B 511, 33 (2001)ADSGoogle Scholar
  35. 35.
    L.Ya. Glozman et al., Phys. Lett. B 516, 183 (2001)ADSGoogle Scholar
  36. 36.
    S. Boffi et al., Eur. Phys. J. A 14, 17 (2002)ADSGoogle Scholar
  37. 37.
    K. Suzuki, W. Weise, Nucl. Phys. A 634, 141 (1998)ADSGoogle Scholar
  38. 38.
    Y. Ding, R.-G. Xu, B.-Q. Ma, Phys. Rev. D 71, 094014 (2005)ADSGoogle Scholar
  39. 39.
    H. Song, X. Zhang, B.-Q. Ma, Eur. Phys. J. C 71, 1542 (2011)ADSGoogle Scholar
  40. 40.
    H. Nematollahi, M.M. Yazdanpanah, A. Mirjalili, J. Phys. G 39, 045009 (2012)ADSGoogle Scholar
  41. 41.
    H. Nematollahi, M.M. Yazdanpanah, Phys. Rev. C 92, 015209 (2015)ADSGoogle Scholar
  42. 42.
    H. Nematollahi, M.M. Yazdanpanah, A. Mirjalili, Eur. Phys. J. Plus 129, 204 (2014)Google Scholar
  43. 43.
    H. Nematollahi, M.M. Yazdanpanah, J. Phys. G 44, 075005 (2017)ADSGoogle Scholar
  44. 44.
    A. Watanabe, C.W. Kao, K. Suzuki, Phys. Rev. D 94, 114008 (2016)ADSGoogle Scholar
  45. 45.
    A. Watanabe, T. Sawada, C.W. Kao, Phys. Rev. D 97, 074015 (2018)ADSGoogle Scholar
  46. 46.
    H. Nematollahi, M.M. Yazdanpanah, Nucl. Phys. A 977, 23 (2018)ADSGoogle Scholar
  47. 47.
    A. Mirjalili, M.M. Yazdanpanah, F. Taghavi-Shahri, K. Ghorbani, J. Phys. G 37, 105003 (2010)ADSGoogle Scholar
  48. 48.
    L.Ya. Glozman et al., Phys. Rev. C 57, 3406 (1998)ADSGoogle Scholar
  49. 49.
    G. Altarelli, G. Parisi, Nucl. Phys. B 126, 298 (1977)ADSGoogle Scholar

Copyright information

© Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Faculty of physicsShahid Bahonar University of KermanKermanIran
  2. 2.Mahani Mathematical Research CenterShahid Bahonar University of KermanKermanIran

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