Photon pair production at flavour factories with per mille accuracy

被引：65

作者：

Balossini, G. ^{[1
,2
]}

Bignamini, C. ^{[1
]}

Calame, C. M. Carloni ^{[3
,4
]}

Montagna, G. ^{[1
,2
]}

Nicrosini, O. ^{[2
]}

Piccinini, F. ^{[2
]}

机构：

[1] Univ Pavia, Dipartimento Fis Nucl & Teor, Via A Bassi 6, I-27100 Pavia, Italy

[2] Sezione Pavia, Ist Nazl Fis Nucl, I-27100 Pavia, Italy

[3] Univ Southumpton, Ist Nazl Fis Nucl, Southampton S017 1BJ, England

[4] Univ Southumpton, Sch Phys & Astron, Southampton S017 1BJ, England

来源：

PHYSICS LETTERS B | 2008年 / 663卷 / 03期

关键词：

quantum electrodynamics; flavour factories; luminosity; photon pair; radiative corrections; parton shower;

D O I：

10.1016/j.physletb.2008.04.007

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a high-precision QED calculation, with 0.1% theoretical accuracy, of two photon production in e(+)e(-) annihilation, as required by more and more accurate luminosity monitoring at flavour factories. The accuracy of the approach, which is based on the matching of exact next-to-leading order corrections with a QED Parton Shower algorithm, is demonstrated through a detailed analysis of the impact of the various sources of radiative corrections to the experimentally relevant observables. The calculation is implemented in the latest version of the event generator BabaYaga, available for precision simulations of photon pair production at e(+)e(-) colliders of moderately high energies. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：209 / 213

页数：5

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