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Leptonic final states from di-boson production at the LHC in the 4-Dimensional Composite Higgs Model

Leptonic final states from di-boson production at the LHC in the 4-Dimensional Composite Higgs Model
Leptonic final states from di-boson production at the LHC in the 4-Dimensional Composite Higgs Model
We study di-boson production via both neutral and charged current at the Large Hadron Collider, i.e. subprocesses $q\bar q\to e^+\nu_e \mu^-\bar\nu_\mu$ + ${\rm{c.c.}}$ and $q\bar q'\to l^+\nu_l l^{'+}l^{'-}$ + ${\rm{c.c.}}$, respectively, where $q,q'$ are quarks and $l,l'=e,\mu$, in all possible combinations, in the context of the 4-Dimensional Composite Higgs Model. These modes enable the production in the intermediate steps of several additional -- with respect to the Standard Model -- neutral and charged gauge bosons belonging to the spectrum of this scenario, all of which in resonant topologies. We not only find these channels to be accessible over the background but also show that, after a dedicated cut-based analysis, kinematic reconstruction of most such resonances is always possible. However, since the Electro-Weak precision data generally disfavor neutral and charged gauge boson masses below the TeV range and also their large couplings to light-fermions, these modes turn out to be relevant only for the 14 TeV option with high integrated luminosity.
Barducci, Daniele
d0289bdd-ac34-493c-95cd-36d811070ecc
Fedeli, Luca
1ddd6a40-9ad1-4453-9eda-b2122d20878b
Moretti, Stefano
b57cf0f0-4bc3-4e02-96e3-071255366614
Curtis, Stefania De
7bf1f7cf-535f-4551-8d05-806c57cfa2d1
Pruna, Giovanni Marco
1cfcac6c-e730-4c1a-b460-62e7fef81a1b
Barducci, Daniele
d0289bdd-ac34-493c-95cd-36d811070ecc
Fedeli, Luca
1ddd6a40-9ad1-4453-9eda-b2122d20878b
Moretti, Stefano
b57cf0f0-4bc3-4e02-96e3-071255366614
Curtis, Stefania De
7bf1f7cf-535f-4551-8d05-806c57cfa2d1
Pruna, Giovanni Marco
1cfcac6c-e730-4c1a-b460-62e7fef81a1b

Barducci, Daniele, Fedeli, Luca, Moretti, Stefano, Curtis, Stefania De and Pruna, Giovanni Marco (2013) Leptonic final states from di-boson production at the LHC in the 4-Dimensional Composite Higgs Model. Journal of High Energy Physics, 2013 (04), [38]. (doi:10.1007/JHEP04(2013)038).

Record type: Article

Abstract

We study di-boson production via both neutral and charged current at the Large Hadron Collider, i.e. subprocesses $q\bar q\to e^+\nu_e \mu^-\bar\nu_\mu$ + ${\rm{c.c.}}$ and $q\bar q'\to l^+\nu_l l^{'+}l^{'-}$ + ${\rm{c.c.}}$, respectively, where $q,q'$ are quarks and $l,l'=e,\mu$, in all possible combinations, in the context of the 4-Dimensional Composite Higgs Model. These modes enable the production in the intermediate steps of several additional -- with respect to the Standard Model -- neutral and charged gauge bosons belonging to the spectrum of this scenario, all of which in resonant topologies. We not only find these channels to be accessible over the background but also show that, after a dedicated cut-based analysis, kinematic reconstruction of most such resonances is always possible. However, since the Electro-Weak precision data generally disfavor neutral and charged gauge boson masses below the TeV range and also their large couplings to light-fermions, these modes turn out to be relevant only for the 14 TeV option with high integrated luminosity.

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More information

Published date: 5 April 2013
Organisations: Theory Group, Physics & Astronomy

Identifiers

Local EPrints ID: 356668
URI: http://eprints.soton.ac.uk/id/eprint/356668
PURE UUID: 6b7b4abe-7510-40da-8c59-de3604af7723

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Date deposited: 23 Sep 2013 13:09
Last modified: 09 Nov 2021 00:31

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Contributors

Author: Daniele Barducci
Author: Luca Fedeli
Author: Stefano Moretti
Author: Stefania De Curtis
Author: Giovanni Marco Pruna

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