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$D_s$ Asymmetry in Photoproduction | | Gang Hao
; Lin Li
; Cong-Feng Qiao
; | | Date: |
27 Sep 2005 | | Subject: | hep-ph | | Abstract: | By adopting two models of strange and antistrange quark distributions inside nucleon, the light-cone meson-baryon fluctuation model and the effective chiral quark model, we calculate the $D_s^+ - D_s^-$ asymmetry in photoproduction in the framework of heavy-quark recombination mechanism. We find that the effect of asymmetry of strange sea to the $D_s$ asymmetry is considerable and depending on the different models. Therefore, we expect that with the further study in electroproduction, e.g. at HERA and CEBAF, the experimental measurements on the $D_s^+ - D_s^-$ asymmetry may impose a strong restriction on the strange-antistrange distribution asymmetry models. | | Source: | arXiv, hep-ph/0509303 | | Services: | Forum | Review | PDF | Favorites | |
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