Consistent constraints on the Standard Model Effective Field Theory

被引：86

作者：

Berthier, Laure ^{[1
]}

Trott, Michael ^{[1
]}

机构：

[1] Univ Copenhagen, Niels Bohr Int Acad, Blegdamsvej 17, DK-2100 Copenhagen, Denmark

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2016年 / 02期

关键词：

Beyond Standard Model; Effective field theories; ELECTROWEAK PARAMETERS; PARITY NONCONSERVATION; PRECISION-MEASUREMENT; CROSS-SECTION; E(+)E(-) ANNIHILATION; RADIATIVE-CORRECTIONS; CHARGE ASYMMETRY; PAIR PRODUCTION; MUON-NEUTRINOS; MIXING ANGLE;

D O I：

10.1007/JHEP02(2016)069

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 develop the global constraint picture in the (linear) effective field theory generalisation of the Standard Model, incorporating data from detectors that operated at PEP, PETRA, TRISTAN, SpS, Tevatron, SLAC, LEPI and LEP II, as well as low energy precision data. We fit one hundred and three observables. We develop a theory error metric for this effective field theory, which is required when constraints on parameters at leading order in the power counting are to be pushed to the percent level, or beyond, unless the cut off scale is assumed to be large, Lambda greater than or similar to 3 TeV. We more consistently incorporate theoretical errors in this work, avoiding this assumption, and as a direct consequence bounds on some leading parameters are relaxed. We show how an S, T analysis is modified by the theory errors we include as an illustrative example.

引用

页码：1 / 48

页数：48

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