Contribution of Sigma Meson Cloud to Proton's Antiquark Distribution

  • The lightest meson π in meson cloud model gave a natural explanation for the observed large light flavor sea asymmetry in proton,but not a satisfied explanation for (x)/(x). here we take into account the σ meson cloud effect,which gives a better description of the data. meanwhile,our calculation implies a reasonable smaller probability of finding a physical proton in the fock state |Nω〉 with a smaller value of Λ ω.
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  • [1] . NMC Collaboration ( Amaudruz P et al ) . Phys. Rev. Lett. , 1991, 66:2712;Arneodo M et al.Phys. Rev. , 1994, D50: R12. Ackerstaff K et al. Phys. Rev. Lett . , 1998, 81: 55193. Baldit A et al. Phys. Lett. , 1994, B332: 2444. E866 Collaboration ( Hawker E A et al ) . Phys . Rev. Lett. , 1998, 80:3715; Peng J C et al. Phys. Rev. , 1999, D58: 092004;Towell R S et al.Phys. Rev. , 2001, D64: 0520025. Thomas A W. Phys.Lett . , 1983, B126: 976. Henley E M, Miller G A. Phys.Lett. , 1990, B251: 4537. Kumano S. Phys. Rev. , 1991, D43: 3067; Kumano s, Longergan J T.Phys. Rev. , 1991, D44: 7178. Kumano S. Phys. Rep. , 1998, 303: 183; Garvey G T, Peng J C. Prog.Part. Nucl. Phys. , 2001, 47: 2039. Alberg M, Falter T,Henley E M. Nucl. Phys. , 1998, A644: 9310. Signal A, Schreiber A W,Thomas A W. Mod.Phys. Lett . , 1991, A6: 27111. Koepf W, Frankfurt L L, Strikman M.Phys. Rev. , 1996, D53: 258612. Melnitchouk W, Speth J, Thomas A W. Phys. Rev. , 1998, D59: 01403313. Nikolaev N N, Schfer W, Szczurek A, Speth J. Phys. Rev. , 1999, D60:01400414. Alberg M,Henley E M,Miller G A. Phys.Lett. , 2000, B471: 39615. Machleidt R, Holinde K, Elster Ch. Phys.Rep. , 1987, 149: 116. AuK L, Morgan D, Pennington M R. Phys. Rev. , 1987, D35: 1633;Morgan D, Pennington M R.Phys. Rev. , 1993 D48: 118517. Ishida M. hep-ph/ 9905261; Ishida M. Prog. Theor. Phys. Suppl, 2003,149: 190; Ishida M, Ishida S. hep-ph/ 0308308.18. Hosaka A,Toki H. Quarks, Baryons and Chiral Symmetry, World Scientific, 200119. Fries R J, Schfer A,Weiss C. Eur. Phys. J. , 2003, A17: 50920. DING Y B et al. hep-ph/ 040210921. Alberg M,Henley E M. Nucl. Phys. , 2000, A663: 30122. HWANG W Y P, Speth J, Brown G E. Z. Phys. , 1991, A339: 383;Szczurek A, Speth J. Nucl. Phys. , 1993, A555: 24923. Sutton P J et al .Phys. Rev. , 1992, D45: 234924. Holtmann H.Mesonen im Nukleon und ihre Auswirkungen in elast ischerund tief inelastischer Streung, Forschungszentrum Juelich, Dissertation,University of Bonn, 199525. Vogt A. hep-ph/980736926. Tandy P C. hep-ph/ 9808029
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HUANG Feng, XU Rong-Guang and MA Bo-Qiang. Contribution of Sigma Meson Cloud to Proton's Antiquark Distribution[J]. Chinese Physics C, 2005, 29(1): 9-13.
HUANG Feng, XU Rong-Guang and MA Bo-Qiang. Contribution of Sigma Meson Cloud to Proton's Antiquark Distribution[J]. Chinese Physics C, 2005, 29(1): 9-13. shu
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Received: 2004-06-24
Revised: 2004-07-15
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Contribution of Sigma Meson Cloud to Proton's Antiquark Distribution

    Corresponding author: MA Bo-Qiang,
  • School of Physics,Peking University,Beijing 100871,China

Abstract: The lightest meson π in meson cloud model gave a natural explanation for the observed large light flavor sea asymmetry in proton,but not a satisfied explanation for (x)/(x). here we take into account the σ meson cloud effect,which gives a better description of the data. meanwhile,our calculation implies a reasonable smaller probability of finding a physical proton in the fock state |Nω〉 with a smaller value of Λ ω.

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