MOMENTS OF THE PHOTON SPECTRUM IN THE INCLUSIVE B-]X(S)GAMMA DECAY

被引：51

作者：

KAPUSTIN, A

LIGETI, Z

机构：

[1] California Institute of Technology, Pasadena

来源：

PHYSICS LETTERS B | 1995年 / 355卷 / 1-2期

关键词：

D O I：

10.1016/0370-2693(95)00762-A

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The moments of the photon spectrum in the inclusive B --> X(s) gamma decay can be calculated to order alpha(s) accuracy at present, without knowing the a, corrections to the effective Hamiltonian. We discuss the standard model predictions, and how the moments of the photon spectrum are related to certain matrix elements of the heavy quark effective theory. The sensitivity of these moments to new physics is small, and they provide a model-independent determination of the b quark pole mass (at order alpha(s)), or equivalently, the matrix elements ($) over bar Lambda and lambda(1) of the effective theory.

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页码：318 / 324

页数：7

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