TY  - JOUR
AU  - Contino, Roberto
AU  - Falkowski, Adam
AU  - Goertz, Florian
AU  - Grojean, Christophe
AU  - Riva, Francesco
TI  - On the validity of the effective field theory approach to SM precision tests
JO  - Journal of high energy physics
VL  - 1607
IS  - 7
SN  - 1029-8479
CY  - Berlin
PB  - Springer
M1  - PUBDB-2016-04412
M1  - DESY-16-067
M1  - arXiv:1604.06444
SP  - 144
PY  - 2016
AB  - We discuss the conditions for an effective field theory (EFT) to give an adequate low-energy description of an underlying physics beyond the Standard Model (SM). Starting from the EFT where the SM is extended by dimension-6 operators, experimental data can be used without further assumptions to measure (or set limits on) the EFT parameters. The interpretation of these results requires instead a set of broad assumptions (e.g. power counting rules) on the UV dynamics. This allows one to establish, in a bottom-up approach, the validity range of the EFT description, and to assess the error associated with the truncation of the EFT series. We give a practical prescription on how experimental results could be reported, so that they admit a maximally broad range of theoretical interpretations. Namely, the experimental constraints on dimension-6 operators should be reported as functions of the kinematic variables that set the relevant energy scale of the studied process. This is especially important for hadron collider experiments where collisions probe a wide range of energy scales.
LB  - PUB:(DE-HGF)29 ; PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000380691500001
DO  - DOI:10.1007/JHEP07(2016)144
UR  - https://bib-pubdb1.desy.de/record/310789
ER  -