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Probing axionlike particles with $\gamma\gamma$ final states from vector boson fusion processes at the LHC

We perform a feasibility study to search for axionlike particles (ALPs) using vector boson fusion (VBF) processes at the LHC. We work in an effective field theory framework with a cutoff scale Λ and ALP mass ma, and assume that ALPs couple to photons with strength ∝1/Λ. Assuming proton-proton collis...

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Autores principales: Flórez, Andrés, Gurrola, Alfredo, Johns, Will, Sheldon, Paul, Sheridan, Elijah, Sinha, Kuver, Soubasis, Brandon
Lenguaje:eng
Publicado: 2021
Materias:
Acceso en línea:https://dx.doi.org/10.1103/PhysRevD.103.095001
http://cds.cern.ch/record/2766860
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author Flórez, Andrés
Gurrola, Alfredo
Johns, Will
Sheldon, Paul
Sheridan, Elijah
Sinha, Kuver
Soubasis, Brandon
author_facet Flórez, Andrés
Gurrola, Alfredo
Johns, Will
Sheldon, Paul
Sheridan, Elijah
Sinha, Kuver
Soubasis, Brandon
author_sort Flórez, Andrés
collection CERN
description We perform a feasibility study to search for axionlike particles (ALPs) using vector boson fusion (VBF) processes at the LHC. We work in an effective field theory framework with a cutoff scale Λ and ALP mass ma, and assume that ALPs couple to photons with strength ∝1/Λ. Assuming proton-proton collisions at s=13  TeV, we present the total VBF ALP production cross sections, ALP decay widths and lifetimes, and relevant kinematic distributions as a function of ma and Λ. We consider the a→γγ decay mode to show that the requirement of an energetic diphoton pair combined with two forward jets with large dijet mass and pseudorapidity separation can significantly reduce the Standard Model backgrounds, leading to a 5σ discovery reach for 10  MeV≲ma≲1  TeV with Λ≲2  TeV, assuming an integrated luminosity of 3000  fb-1. In particular, this extends the LHC sensitivity to a previously unstudied region of the ALP parameter space.
id cern-2766860
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2021
record_format invenio
spelling cern-27668602023-10-19T02:21:35Zdoi:10.1103/PhysRevD.103.095001doi:10.1103/PhysRevD.103.095001http://cds.cern.ch/record/2766860engFlórez, AndrésGurrola, AlfredoJohns, WillSheldon, PaulSheridan, ElijahSinha, KuverSoubasis, BrandonProbing axionlike particles with $\gamma\gamma$ final states from vector boson fusion processes at the LHChep-phParticle Physics - PhenomenologyWe perform a feasibility study to search for axionlike particles (ALPs) using vector boson fusion (VBF) processes at the LHC. We work in an effective field theory framework with a cutoff scale Λ and ALP mass ma, and assume that ALPs couple to photons with strength ∝1/Λ. Assuming proton-proton collisions at s=13  TeV, we present the total VBF ALP production cross sections, ALP decay widths and lifetimes, and relevant kinematic distributions as a function of ma and Λ. We consider the a→γγ decay mode to show that the requirement of an energetic diphoton pair combined with two forward jets with large dijet mass and pseudorapidity separation can significantly reduce the Standard Model backgrounds, leading to a 5σ discovery reach for 10  MeV≲ma≲1  TeV with Λ≲2  TeV, assuming an integrated luminosity of 3000  fb-1. In particular, this extends the LHC sensitivity to a previously unstudied region of the ALP parameter space.We perform a feasibility study to search for axion-like particles (ALPs) using vector boson fusion (VBF) processes at the LHC. We work in an effective field theory framework with cutoff scale $\Lambda$ and ALP mass $m_{a}$, and assume that ALPs couple to photons with strength $\propto 1/\Lambda$. Assuming proton-proton collisions at $\sqrt{s} = 13$ TeV, we present the total VBF ALP production cross sections, ALP decay widths and lifetimes, and relevant kinematic distributions as a function of $m_{a}$ and $\Lambda$. We consider the $a\to\gamma\gamma$ decay mode to show that the requirement of an energetic diphoton pair combined with two forward jets with large dijet mass and pseudorapidity separation can significantly reduce the Standard Model backgrounds, leading to a $5\sigma$ discovery reach for $10 \text{ MeV} \lesssim m_{a} \lesssim 1$ TeV with $\Lambda \lesssim 2$ TeV, assuming an integrated luminosity of 3000 fb$^{-1}$. In particular, this extends the LHC sensitivity to a previously unstudied region of the ALP parameter space.arXiv:2101.11119oai:cds.cern.ch:27668602021-01-26
spellingShingle hep-ph
Particle Physics - Phenomenology
Flórez, Andrés
Gurrola, Alfredo
Johns, Will
Sheldon, Paul
Sheridan, Elijah
Sinha, Kuver
Soubasis, Brandon
Probing axionlike particles with $\gamma\gamma$ final states from vector boson fusion processes at the LHC
title Probing axionlike particles with $\gamma\gamma$ final states from vector boson fusion processes at the LHC
title_full Probing axionlike particles with $\gamma\gamma$ final states from vector boson fusion processes at the LHC
title_fullStr Probing axionlike particles with $\gamma\gamma$ final states from vector boson fusion processes at the LHC
title_full_unstemmed Probing axionlike particles with $\gamma\gamma$ final states from vector boson fusion processes at the LHC
title_short Probing axionlike particles with $\gamma\gamma$ final states from vector boson fusion processes at the LHC
title_sort probing axionlike particles with $\gamma\gamma$ final states from vector boson fusion processes at the lhc
topic hep-ph
Particle Physics - Phenomenology
url https://dx.doi.org/10.1103/PhysRevD.103.095001
https://dx.doi.org/10.1103/PhysRevD.103.095001
http://cds.cern.ch/record/2766860
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