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Z? discovery potential at the LHC in the minimal B–L extension of the standard model

Z? discovery potential at the LHC in the minimal B–L extension of the standard model
Z? discovery potential at the LHC in the minimal B–L extension of the standard model
We present the Large Hadron Collider (LHC) discovery potential in the Z? sector of a U(1) B--L enlarged Standard Model (that also includes three heavy Majorana neutrinos and an additional Higgs boson) for ?s =7, 10 and 14 TeV centre-of-mass (CM) energies, considering both the Z?B--L ?e + e? and Z?B--L ??+ ?? decay channels. The comparison of the (irreducible) backgrounds with the expected backgrounds for the DØ experiment at the Tevatron validates our simulation. We propose an alternative analysis that has the potential to improve the DØ sensitivity. Electrons provide a higher sensitivity to smaller couplings at small Z?B--L boson masses than do muons. The resolutions achievable may allow the Z?B--L boson width to be measured at smaller masses in the case of electrons in the final state. The run of the LHC at ?s =7 TeV, assuming at most ?L?1 fb?1, will be able to give similar results to those that will be available soon at the Tevatron in the lower mass region, and to extend them for a heavier M Z?.
1434-6044
1613
Basso, Lorenzo
c9d03f26-0be7-487c-8810-ae3b9ffa924c
Belyaev, Alexander
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3
Moretti, Stefano
b57cf0f0-4bc3-4e02-96e3-071255366614
Pruna, Giovanni Marco
b8ff227a-2f17-4865-bdac-c04b672da713
Shepherd-Themistocleous, Claire H.
02e9b880-a622-4ad1-9b20-db7ed25b2fa8
Basso, Lorenzo
c9d03f26-0be7-487c-8810-ae3b9ffa924c
Belyaev, Alexander
6bdb9638-5ff9-4b65-a8f2-34bae3ac34b3
Moretti, Stefano
b57cf0f0-4bc3-4e02-96e3-071255366614
Pruna, Giovanni Marco
b8ff227a-2f17-4865-bdac-c04b672da713
Shepherd-Themistocleous, Claire H.
02e9b880-a622-4ad1-9b20-db7ed25b2fa8

Basso, Lorenzo, Belyaev, Alexander, Moretti, Stefano, Pruna, Giovanni Marco and Shepherd-Themistocleous, Claire H. (2011) Z? discovery potential at the LHC in the minimal B–L extension of the standard model. The European Physical Journal C, 71, 1613. (doi:10.1140/epjc/s10052-011-1613-6).

Record type: Article

Abstract

We present the Large Hadron Collider (LHC) discovery potential in the Z? sector of a U(1) B--L enlarged Standard Model (that also includes three heavy Majorana neutrinos and an additional Higgs boson) for ?s =7, 10 and 14 TeV centre-of-mass (CM) energies, considering both the Z?B--L ?e + e? and Z?B--L ??+ ?? decay channels. The comparison of the (irreducible) backgrounds with the expected backgrounds for the DØ experiment at the Tevatron validates our simulation. We propose an alternative analysis that has the potential to improve the DØ sensitivity. Electrons provide a higher sensitivity to smaller couplings at small Z?B--L boson masses than do muons. The resolutions achievable may allow the Z?B--L boson width to be measured at smaller masses in the case of electrons in the final state. The run of the LHC at ?s =7 TeV, assuming at most ?L?1 fb?1, will be able to give similar results to those that will be available soon at the Tevatron in the lower mass region, and to extend them for a heavier M Z?.

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Published date: April 2011
Organisations: Physics & Astronomy

Identifiers

Local EPrints ID: 144375
URI: https://eprints.soton.ac.uk/id/eprint/144375
ISSN: 1434-6044
PURE UUID: bbc75cca-1d81-453c-98c7-799fee2b0e7b
ORCID for Alexander Belyaev: ORCID iD orcid.org/0000-0002-1733-4408

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Date deposited: 17 Sep 2013 08:43
Last modified: 12 Nov 2019 01:44

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Contributors

Author: Lorenzo Basso
Author: Stefano Moretti
Author: Giovanni Marco Pruna
Author: Claire H. Shepherd-Themistocleous

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