New Higgs interactions and recent data from the LHC and the Tevatron

Banerjee, Shankha ; Mukhopadhyay, Satyanarayan ; Mukhopadhyaya, Biswarup (2012) New Higgs interactions and recent data from the LHC and the Tevatron Journal of High Energy Physics, 2012 (10). Article ID 062. ISSN 1029-8479

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Official URL: https://link.springer.com/article/10.1007/JHEP10(2...

Related URL: http://dx.doi.org/10.1007/JHEP10(2012)062

Abstract

We perform a multi-parameter global analysis of all data available till date from the ATLAS, CMS and Tevatron experiments, on the signals of a Higgs boson, to investigate how much scope exists for departure from the standard model prediction. We adopt a very general and model-independent scenario, where separate deviations from standard model values are possible for couplings of the observed scalar with up-and down-type fermions, W-and Z-boson pairs, as well as gluon and photon pair effective interactions. An arbitrary phase in the coupling with the top-pair, and the provision for an invisible decay width for the scalar are also introduced. After performing a global fit with seven parameters, we find that their values at 95% confidence level can be considerably different from standard model expectations. Moreover, rather striking implications of the phase in top-quark coupling are noticed. We also note that the invisible branching ratio can be sizeable, especially when the couplings of the Higgs to W-and Z-pairs are allowed to be different.

Item Type:Article
Source:Copyright of this article belongs to Springer Verlag.
Keywords:Higgs Physics; Beyond Standard Model
ID Code:114541
Deposited On:05 Jun 2018 05:57
Last Modified:05 Jun 2018 05:57

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