Final state interactions and ε′/ε:: a critical look

被引：30

作者：

Buras, AJ ^{[1
]}

Ciuchini, M

Franco, E

Isidori, G

Martinelli, G

Silvestrini, L

机构：

[1] Tech Univ Munich, Dept Phys, D-85748 Garching, Germany

[2] Univ Roma Tre, Dipartimento Fis, I-00146 Rome, Italy

[3] Ist Nazl Fis Nucl, Sezione Roma Tre, I-00146 Rome, Italy

[4] Univ Rome La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

[5] Ist Nazl Fis Nucl, Sezione Roma, I-00185 Rome, Italy

[6] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

[7] Univ Paris 11, LAL, F-91405 Orsay, France

[8] Univ Paris 11, Phys Theor Lab, CNRS, F-91405 Orsay, France

来源：

PHYSICS LETTERS B | 2000年 / 480卷 / 1-2期

关键词：

D O I：

10.1016/S0370-2693(00)00362-2

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We critically analyze recent attempts to include final state interaction (FSI) effects in the calculation of the CP violating ratio epsilon'/epsilon. In particular the approach of using the Muskhelishvili-Omnes equation for the decay amplitudes is examined. We find that the values of the dispersive correction factors are very sensitive to initial conditions which are, at present, out of control, and demonstrate that the claimed large enhancement of epsilon'/epsilon through FSI is questionable. We propose, instead, a different implementation of this approach which may be useful to lattice determinations of weal; amplitudes. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：80 / 86

页数：7

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