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SO (10) inspired Z′ models at the LHC

SO (10) inspired Z′ models at the LHC
SO (10) inspired Z′ models at the LHC

We study and compare various Z′ models arising from SO(10), focusing in particular on the Abelian subgroup U(1)R×U(1)B-L, broken at the TeV scale to Standard Model hypercharge U(1)Y. The gauge group U(1)R×U(1)B-L, which is equivalent to the U(1)Y×U(1)χ in a different basis, is well motivated from SO(10) breaking and allows neutrino mass via the linear seesaw mechanism. Assuming supersymmetry, we first consider single step gauge unification to predict the gauge couplings, then we consider the detection and characterization prospects of the resulting Z′ at the LHC by studying its possible decay modes into di-leptons as well as into Higgs bosons. The main new result here is to analyse in detail the expected leptonic forward-backward asymmetry at the high luminosity LHC and show that it may be used to discriminate the U(1)R×U(1)B-L model from the usual B-L model based on U(1)Y×U(1)B-L.

2470-0010
King, Simon J.D.
2e855764-14d3-4bdb-b0d9-e0659b969a3b
King, Stephen F.
f8c616b7-0336-4046-a943-700af83a1538
Moretti, Stefano
b57cf0f0-4bc3-4e02-96e3-071255366614
King, Simon J.D.
2e855764-14d3-4bdb-b0d9-e0659b969a3b
King, Stephen F.
f8c616b7-0336-4046-a943-700af83a1538
Moretti, Stefano
b57cf0f0-4bc3-4e02-96e3-071255366614

King, Simon J.D., King, Stephen F. and Moretti, Stefano (2018) SO (10) inspired Z′ models at the LHC. Physical Review D, 97 (11), [115027]. (doi:10.1103/PhysRevD.97.115027).

Record type: Article

Abstract

We study and compare various Z′ models arising from SO(10), focusing in particular on the Abelian subgroup U(1)R×U(1)B-L, broken at the TeV scale to Standard Model hypercharge U(1)Y. The gauge group U(1)R×U(1)B-L, which is equivalent to the U(1)Y×U(1)χ in a different basis, is well motivated from SO(10) breaking and allows neutrino mass via the linear seesaw mechanism. Assuming supersymmetry, we first consider single step gauge unification to predict the gauge couplings, then we consider the detection and characterization prospects of the resulting Z′ at the LHC by studying its possible decay modes into di-leptons as well as into Higgs bosons. The main new result here is to analyse in detail the expected leptonic forward-backward asymmetry at the high luminosity LHC and show that it may be used to discriminate the U(1)R×U(1)B-L model from the usual B-L model based on U(1)Y×U(1)B-L.

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PhysRevD.97.115027 - Version of Record
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e-pub ahead of print date: 15 June 2018

Identifiers

Local EPrints ID: 424807
URI: http://eprints.soton.ac.uk/id/eprint/424807
ISSN: 2470-0010
PURE UUID: 02f62eb5-d3c7-4123-84ed-9f0ce65aef84

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Date deposited: 05 Oct 2018 11:47
Last modified: 06 Oct 2020 23:57

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Contributors

Author: Simon J.D. King
Author: Stephen F. King
Author: Stefano Moretti

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