ar X iv : h ep - p h / 03 11 01 2 v 2 2 7 N ov 2 00 3 CP Test in J / ψ → γφφ Decay
نویسندگان
چکیده
We propose to test CP symmetry in the decay J/ψ → γφφ, for which large data sample exists at BESII, and a data sample of 10 10 J/ψ's will be collected with BESIII and CLEO-C program. We suggest some CP asymmetries in this decay mode for CP test. Assuming that CP violation is introduced by the electric-and chromo-dipole moment of charm quark, these CP asymmetries can be predicted by using valence quark models. Our work shows a possible way to get information about the electric-and chromo-dipole moment of charm quark, which is little known. Our results show that with the current data sample of J/ψ, electric-and chromo-dipole moment can be probed at order of 10 −13 e cm. In the near future with a 10 10 data sample, these moments can be probed at order of 10 −14 e cm.
منابع مشابه
ar X iv : h ep - p h / 03 11 01 2 v 1 2 N ov 2 00 3 CP Test in J / ψ → γφφ Decay
We propose to test CP symmetry in the decay J/ψ → γφφ, for which large data sample exists at BESII, and a data sample of 10 10 J/ψ's will be collected with BESIII and CLEO-C program. We suggest some CP asymmetries in this decay mode for CP test. Assuming that CP violation is introduced by the electric-and chromo-dipole moment of charm quark, these CP asymmetries can be predicted by using valenc...
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