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Discovery and mass spectroscopy via mixed Di-Boson production at the LHC in a 4-Site model with a composite Higgs Boson

Discovery and mass spectroscopy via mixed Di-Boson production at the LHC in a 4-Site model with a composite Higgs Boson
Discovery and mass spectroscopy via mixed Di-Boson production at the LHC in a 4-Site model with a composite Higgs Boson
We investigate the scope of the Large Hadron Collider (LHC) in probing the parameter space of a 4-Site (4S) model supplemented by one composite Higgs state. We concentrate on the yield of 'mixed' di-boson production giving three leptons and missing (transverse) energy in the final state, i.e., events induced via the sub-process $q\bar q' -> l^+\nu_l l^{'+}l^{'-}$ + ${\rm{c.c.}}$, where $q,q'$ are quarks and $l,l'=e,\mu$ in all possible combinations, signature which enables the production in the intermediate steps of all additional -- with respect to the Standard Model (SM) -- neutral and charged gauge bosons belonging to the spectrum of this scenario, all of which in resonant topologies. We not only find this channel to be accessible over the background but also show that, after a dedicated cut-based analysis, kinematical reconstruction of all such resonances is always possible. We finally compare the yield of the mixed di-boson mode to that of the 'charged' di-boson one and find that the former is of lesser scope than the latter at smaller gauge boson masses but it overcomes it at higher values, thereby revealing itself a viable search mode covering new regions of parameter space.
1550-7998
015021-[11 pages]
Fedeli, Luca
1ddd6a40-9ad1-4453-9eda-b2122d20878b
Moretti, Stefano
b57cf0f0-4bc3-4e02-96e3-071255366614
De Curtis, Stefania
7bf1f7cf-535f-4551-8d05-806c57cfa2d1
Dominici, Daniele
aca95683-a4dd-4521-ab76-e132b61c6c58
Fedeli, Luca
1ddd6a40-9ad1-4453-9eda-b2122d20878b
Moretti, Stefano
b57cf0f0-4bc3-4e02-96e3-071255366614
De Curtis, Stefania
7bf1f7cf-535f-4551-8d05-806c57cfa2d1
Dominici, Daniele
aca95683-a4dd-4521-ab76-e132b61c6c58

Fedeli, Luca, Moretti, Stefano, De Curtis, Stefania and Dominici, Daniele (2013) Discovery and mass spectroscopy via mixed Di-Boson production at the LHC in a 4-Site model with a composite Higgs Boson. Physical Review D, D87 (1), 015021-[11 pages]. (doi:10.1103/PhysRevD.87.015021).

Record type: Article

Abstract

We investigate the scope of the Large Hadron Collider (LHC) in probing the parameter space of a 4-Site (4S) model supplemented by one composite Higgs state. We concentrate on the yield of 'mixed' di-boson production giving three leptons and missing (transverse) energy in the final state, i.e., events induced via the sub-process $q\bar q' -> l^+\nu_l l^{'+}l^{'-}$ + ${\rm{c.c.}}$, where $q,q'$ are quarks and $l,l'=e,\mu$ in all possible combinations, signature which enables the production in the intermediate steps of all additional -- with respect to the Standard Model (SM) -- neutral and charged gauge bosons belonging to the spectrum of this scenario, all of which in resonant topologies. We not only find this channel to be accessible over the background but also show that, after a dedicated cut-based analysis, kinematical reconstruction of all such resonances is always possible. We finally compare the yield of the mixed di-boson mode to that of the 'charged' di-boson one and find that the former is of lesser scope than the latter at smaller gauge boson masses but it overcomes it at higher values, thereby revealing itself a viable search mode covering new regions of parameter space.

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Published date: 2013
Organisations: Physics & Astronomy

Identifiers

Local EPrints ID: 356674
URI: http://eprints.soton.ac.uk/id/eprint/356674
ISSN: 1550-7998
PURE UUID: 1e64fca9-18a3-4335-b279-203c85735efa

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Date deposited: 17 Sep 2013 15:39
Last modified: 09 Nov 2021 00:31

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Contributors

Author: Luca Fedeli
Author: Stefano Moretti
Author: Stefania De Curtis
Author: Daniele Dominici

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