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Mass of the b Quark from QCD Sum Rules for fB(s) доклад на конференции
- Авторы: Мелихов Д.И., Simula S., Lucha W.
- Международная Конференция : 2013 European Physical Society Conference on High Energy Physics (EPS-HEP 2013)
- Даты проведения конференции: 2013
- Тип доклада: Устный
- Докладчик: Мелихов Д.И.
- Место проведения: 18-24 July 2013, Stockholm, Sweden, Sweden
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Аннотация доклада:
We demonstrate that Borel QCD sum rules for heavy-light currents entail a very strong correlation between the b-quark mass mb and the B-meson decay constant fB, that is, δfB/fB≈−8δmb/mb. By starting from fB as input, this observation allows for an accurate sum-rule determination of mb. Employing precise lattice QCD results for fB in our sum-rule study based on the three-loop O(α2s) heavy-light correlation function implies mb(mb)=(4.247±0.034) GeV for the b-quark MSbar mass.
- Добавил в систему: Мелихов Дмитрий Игоревич