The decay of heavy-light hybrids in HQET sum rules
نویسندگان
چکیده
The decay widths of the 0++ and 1−+ heavy-light hybrids to B(D) and pion are calculated by using the QCD sum rules. The interpolated current of the hybrid is chosen as gq̄γαG a αμT hv (x). In order to avoid the infrared problem, a two point correlation function between the pion and vacuum instead of the three point correlation function between the vacuum is used. We also keep the leading order of 1/MQ expansion in our calculation for convenience. The decay width of the first type is 1 ∼ 2 MeV while the second type is several hundred KeV.
منابع مشابه
Decay of heavy-light hybrids in HQET sum rules
The decay widths of the 0++ and 1−+ heavy-light hybrids to B(D) and pion are calculated by using the QCD sum rules. The interpolated current of the hybrid is chosen as gq̄γαG a αμT hv (x). In order to simplify the calculation and avoid the ambiguity of three-point correlation function, a two-point correlation function between the pion and vacuum is used instead. The decay width of the 0++ → B(D)...
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