Modelling Bose-Einstein correlations at LEP 2

被引：113

作者：

Lonnblad, L

Sjostrand, T

机构：

[1] NORDITA, DK-2100 Copenhagen O, Denmark

[2] Lund Univ, Dept Theoret Phys, S-22362 Lund, Sweden

来源：

EUROPEAN PHYSICAL JOURNAL C | 1998年 / 2卷 / 01期

关键词：

D O I：

10.1007/s100520050131

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We present new algorithms for simulating Bose-Einstein correlations among final-state bosons in an event generator. The algorithms are all based on introducing Bose-Einstein correlations as a shift of final-state momenta among identical bosons, and differ only in the way energy and momentum conservation is ensured. The benefits and shortcomings of this approach, that may be viewed as a local reweighting strategy, is compared to the ones of recently proposed algorithms involving global event reweighting. We use the new algorithms to improve on our previous study of the effects of Bose-Einstein correlations on the W mass measurement at LEP 2. The intrinsic uncertainty could be as high as 100 MeV but is probably reduced to the order of 30 MeV with realistic experimental reconstruction procedures.

引用

页码：165 / 180

页数：16

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