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Search for Sphalerons in Proton-Proton Collisions

In a recent paper, Tye and Wong (TW) have argued that sphaleron-induced transitions in high-energy proton-proton collisions should be enhanced compared to previous calculations, based on a construction of a Bloch wave function in the periodic sphaleron potential and the corresponding pass band struc...

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Detalles Bibliográficos
Autores principales: Ellis, John, Sakurai, Kazuki
Lenguaje:eng
Publicado: 2016
Materias:
Acceso en línea:https://dx.doi.org/10.1007/JHEP04(2016)086
http://cds.cern.ch/record/2124347
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author Ellis, John
Sakurai, Kazuki
author_facet Ellis, John
Sakurai, Kazuki
author_sort Ellis, John
collection CERN
description In a recent paper, Tye and Wong (TW) have argued that sphaleron-induced transitions in high-energy proton-proton collisions should be enhanced compared to previous calculations, based on a construction of a Bloch wave function in the periodic sphaleron potential and the corresponding pass band structure. Here we convolute the calculations of TW with parton distribution functions and simulations of final states to explore the signatures of sphaleron transitions at the LHC and possible future colliders. We calculate the increase of sphaleron transition rates in proton-proton collisions at centre-of-mass energies of 13/14/33/100 TeV for different sphaleron barrier heights, while recognising that the rates have large overall uncertainties. We use a simulation to show that LHC searches for microscopic black holes should have good efficiency for detecting sphaleron-induced final states, and discuss their experimental signatures and observability in Run 2 of the LHC and beyond. We recast the early ATLAS Run-2 search for microscopic black holes to constrain the rate of sphaleron transitions at 13 TeV, deriving a significant limit on the sphaleron transition rate for the nominal sphaleron barrier height of 9 TeV.
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language eng
publishDate 2016
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spelling cern-21243472022-08-10T12:40:00Zdoi:10.1007/JHEP04(2016)086http://cds.cern.ch/record/2124347engEllis, JohnSakurai, KazukiSearch for Sphalerons in Proton-Proton CollisionsParticle Physics - PhenomenologyIn a recent paper, Tye and Wong (TW) have argued that sphaleron-induced transitions in high-energy proton-proton collisions should be enhanced compared to previous calculations, based on a construction of a Bloch wave function in the periodic sphaleron potential and the corresponding pass band structure. Here we convolute the calculations of TW with parton distribution functions and simulations of final states to explore the signatures of sphaleron transitions at the LHC and possible future colliders. We calculate the increase of sphaleron transition rates in proton-proton collisions at centre-of-mass energies of 13/14/33/100 TeV for different sphaleron barrier heights, while recognising that the rates have large overall uncertainties. We use a simulation to show that LHC searches for microscopic black holes should have good efficiency for detecting sphaleron-induced final states, and discuss their experimental signatures and observability in Run 2 of the LHC and beyond. We recast the early ATLAS Run-2 search for microscopic black holes to constrain the rate of sphaleron transitions at 13 TeV, deriving a significant limit on the sphaleron transition rate for the nominal sphaleron barrier height of 9 TeV.In a recent paper, Tye and Wong (TW) have argued that sphaleron-induced transitions in high-energy proton-proton collisions should be enhanced compared to previous calculations, based on a construction of a Bloch wave function in the periodic sphaleron potential and the corresponding pass band structure. Here we convolute the calculations of TW with parton distribution functions and simulations of final states to explore the signatures of sphaleron transitions at the LHC and possible future colliders. We calculate the increase of sphaleron transition rates in proton-proton collisions at centre-of-mass energies of 13/14/33/100 TeV for different sphaleron barrier heights, while recognising that the rates have large overall uncertainties. We use a simulation to show that LHC searches for microscopic black holes should have good efficiency for detecting sphaleron-induced final states, and discuss their experimental signatures and observability in Run 2 of the LHC and beyond. We recast the early ATLAS Run-2 search for microscopic black holes to constrain the rate of sphaleron transitions at 13 TeV, deriving a significant limit on the sphaleron transition rate for the nominal sphaleron barrier height of 9 TeV.arXiv:1601.03654KCL-PH-TH-2016-03LCTS-2016-02CERN-TH-2016-011IPPP-16-02KCL-PH-TH-2016-03LCTS-2016-02CERN-TH-2016-011IPPP-16-02oai:cds.cern.ch:21243472016-01-14
spellingShingle Particle Physics - Phenomenology
Ellis, John
Sakurai, Kazuki
Search for Sphalerons in Proton-Proton Collisions
title Search for Sphalerons in Proton-Proton Collisions
title_full Search for Sphalerons in Proton-Proton Collisions
title_fullStr Search for Sphalerons in Proton-Proton Collisions
title_full_unstemmed Search for Sphalerons in Proton-Proton Collisions
title_short Search for Sphalerons in Proton-Proton Collisions
title_sort search for sphalerons in proton-proton collisions
topic Particle Physics - Phenomenology
url https://dx.doi.org/10.1007/JHEP04(2016)086
http://cds.cern.ch/record/2124347
work_keys_str_mv AT ellisjohn searchforsphaleronsinprotonprotoncollisions
AT sakuraikazuki searchforsphaleronsinprotonprotoncollisions