Collider phenomenology of Hidden Valley mediators of spin 0 or 1/2 with semivisible jets

A bstract Many models of Beyond the Standard Model physics contain particles that are charged under both Standard Model and Hidden Valley gauge groups, yet very little effort has been put into establishing their experimental signatures. We provide a general overview of the collider phenomenology of...

Full description

Saved in:

Bibliographic Details
Published in:	The journal of high energy physics 2018-08, Vol.2018 (8), p.1-40, Article 30
Main Authors:	Beauchesne, Hugues, Bertuzzo, Enrico, di Cortona, Giovanni Grilli, Tabrizi, Zahra
Format:	Article
Language:	eng
Subjects:	Beyond Standard Model Charged particles Classical and Quantum Gravitation Confining Elementary Particles Higgs Physics High energy physics Jets Operators Phenomenology Physics Physics and Astronomy Quantum Field Theories Quantum Field Theory Quantum Physics Regular Article - Theoretical Physics Relativity Theory Signatures Standard model (particle physics) String Theory Symmetry
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	A bstract Many models of Beyond the Standard Model physics contain particles that are charged under both Standard Model and Hidden Valley gauge groups, yet very little effort has been put into establishing their experimental signatures. We provide a general overview of the collider phenomenology of spin 0 or 1/2 mediators with non-trivial gauge numbers under both the Standard Model and a single new confining group. Due to the possibility of many unconventional signatures, the focus is on direct production with semivisible jets. For the mediators to be able to decay, a global U(1) symmetry must be broken. This is best done by introducing a set of operators explicitly violating this symmetry. We find that there is only a finite number of such renormalizable operators and that the phenomenology can be classified into five distinct categories. We show that large regions of the parameter space are already excluded, while others are unconstrained by current search strategies. We also discuss how searches could be modified to better probe these unconstrained regions by exploiting special properties of semivisible jets.
ISSN:	1029-8479 1029-8479