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High Energy Physics - Phenomenology

arXiv:hep-ph/0504087 (hep-ph)
[Submitted on 12 Apr 2005 (v1), last revised 4 Jun 2005 (this version, v2)]

Title:Ds+ -- Ds- Asymmetry in Photoproduction

Authors:Gang Hao, Lin Li, Cong-Feng Qiao
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Abstract: Considering of the possible difference in strange and antistrange quark distributions inside nucleon, we investigate the Ds+ -- Ds- asymmetry in photoproduction in the framework of heavy-quark recombination mechanism. We adopt two distribution models of strange sea, those are the light-cone meson-baryon fluctuation model and the effective chiral quark model. Our results show that the asymmetry induced by the strange quark distributions is distinct, which is measurable in experiments. And, there are evident differences between the predictions of our calculation and previous estimation. Therefore, the experimental measurements on the Ds+ -- Ds- asymmetry may impose a unique restriction on the strange-antistrange distribution asymmetry models.
Comments: 11 page, 5 figures
Subjects: High Energy Physics - Phenomenology (hep-ph)
Cite as: arXiv:hep-ph/0504087
  (or arXiv:hep-ph/0504087v2 for this version)
  https://doi.org/10.48550/arXiv.hep-ph/0504087
Journal reference: Phys.Lett.B621:139-144,2005
Related DOI: https://doi.org/10.1016/j.physletb.2005.06.057

Submission history

From: Junfeng Sun [view email]
[v1] Tue, 12 Apr 2005 14:50:25 UTC (87 KB)
[v2] Sat, 4 Jun 2005 10:04:09 UTC (87 KB)
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