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Title: Constraints on the trilinear Higgs self coupling from precision observables

Abstract

We present the constraints on the trilinear Higgs self coupling that arise from loop effects in the W boson mass and the effective sine predictions. Here, we compute the contributions to these precision observables of two-loop diagrams featuring an anomalous trilinear Higgs self coupling. We explicitly show that the same anomalous contributions are found if the analysis of m W and sin 2θ$$lep\atop{eff}$$ is performed in a theory in which the scalar potential in the Standard Model Lagrangian is modified by an (in)finite tower of (Φ Φ) n terms with Φ the Higgs doublet. Lastly, we find that the bounds on the trilinear Higgs self coupling from precision observables are competitive with those coming from Higgs pair production.

Authors:
 [1];  [2];  [3]
  1. Sapienza Univ. of Rome Tre (Italy). Dept. of Mathematics and Physics; National Inst. of Nuclear Physics (INFN), Rome (Italy)
  2. Sapienza Univ. of Rome (Italy). La Sapienza, Dept. of Physics; National Inst. of Nuclear Physics (INFN), Rome (Italy)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States). Dept. of Physics
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
OSTI Identifier:
1361236
Report Number(s):
BNL-113809-2017-JA
Journal ID: ISSN 1029-8479; KA2401012
Grant/Contract Number:  
SC0012704
Resource Type:
Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2017; Journal Issue: 4; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Beyond Standard Model; Higgs Physics

Citation Formats

Degrassi, G., Fedele, M., and Giardino, P. P. Constraints on the trilinear Higgs self coupling from precision observables. United States: N. p., 2017. Web. doi:10.1007/JHEP04(2017)155.
Degrassi, G., Fedele, M., & Giardino, P. P. Constraints on the trilinear Higgs self coupling from precision observables. United States. doi:10.1007/JHEP04(2017)155.
Degrassi, G., Fedele, M., and Giardino, P. P. Thu . "Constraints on the trilinear Higgs self coupling from precision observables". United States. doi:10.1007/JHEP04(2017)155. https://www.osti.gov/servlets/purl/1361236.
@article{osti_1361236,
title = {Constraints on the trilinear Higgs self coupling from precision observables},
author = {Degrassi, G. and Fedele, M. and Giardino, P. P.},
abstractNote = {We present the constraints on the trilinear Higgs self coupling that arise from loop effects in the W boson mass and the effective sine predictions. Here, we compute the contributions to these precision observables of two-loop diagrams featuring an anomalous trilinear Higgs self coupling. We explicitly show that the same anomalous contributions are found if the analysis of mW and sin2θ$lep\atop{eff}$ is performed in a theory in which the scalar potential in the Standard Model Lagrangian is modified by an (in)finite tower of (Φ†Φ)n terms with Φ the Higgs doublet. Lastly, we find that the bounds on the trilinear Higgs self coupling from precision observables are competitive with those coming from Higgs pair production.},
doi = {10.1007/JHEP04(2017)155},
journal = {Journal of High Energy Physics (Online)},
number = 4,
volume = 2017,
place = {United States},
year = {2017},
month = {4}
}

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