Far-forward neutrinos at the Large Hadron Collider

Bai, Weidong; Diwan, Milind; Garzelli, Maria Vittoria; Jeong, Yu Seon; Reno, Mary Hall

doi:10.1007/jhep06(2020)032

Title: Far-forward neutrinos at the Large Hadron Collider

Abstract

We present a new calculation of the energy distribution of high-energy neutrinos from the decay of charm and bottom hadrons produced at the Large Hadron Collider (LHC). In the kinematical region of very forward rapidities, heavy-flavor production and decay is a source of tau neutrinos that leads to thousands of charged-current tau neutrino events in a 1 m long, 1 m radius lead neutrino detector at a distance of 480 m from the interaction region. In our computation, next-to-leading order QCD radiative corrections are accounted for in the production cross-sections. Non-perturbative intrinsic-kT effects are approximated by a simple phenomenological model introducing a Gaussian kT-smearing of the parton distribution functions, which might also mimic perturbative effects due to multiple initial-state soft-gluon emissions. The transition from partonic to hadronic states is described by phenomenological fragmentation functions. To study the effect of various input parameters, theoretical predictions for D± s production are compared with LHCb data on double-differential cross-sections in transverse momentum and rapidity. The uncertainties related to the choice of the input parameter values, ultimately affecting the predictions of the tau neutrino event distributions, are discussed. We consider a 3+1 neutrino mixing scenario to illustrate the potential for a neutrino experiment tomore »« less

Authors:

Bai, Weidong ^[1]; Diwan, Milind ^[2]; Garzelli, Maria Vittoria ^[3]; Jeong, Yu Seon ^[4];

^[1]

University of Iowa, Iowa City, IA (United States)
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Universit`a degli Studi di Firenze (Italy)
European Organization for Nuclear Research (CERN), Geneva (Switzerland)

Publication Date:: Wed Jun 03 00:00:00 EDT 2020

Research Org.:: Univ. of Iowa, Iowa City, IA (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Org.:: USDOE Office of Science (SC), High Energy Physics (HEP)

OSTI Identifier:: 1656864

Alternate Identifier(s):: OSTI ID: 1638788

Report Number(s):: BNL-216157-2020-JAAM
Journal ID: ISSN 1029-8479; TRN: US2203199

Grant/Contract Number:: SC0010113; SC0012704

Resource Type:: Accepted Manuscript

Journal Name:: Journal of High Energy Physics (Online)

Additional Journal Information:: Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2020; Journal Issue: 6; Journal ID: ISSN 1029-8479

Publisher:: Springer Berlin

Country of Publication:: United States

Language:: English

Subject:: 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Beyond Standard Model; Heavy Quark Physics; Neutrino Physics

Citation Formats


                    Bai, Weidong, Diwan, Milind, Garzelli, Maria Vittoria, Jeong, Yu Seon, and Reno, Mary Hall. Far-forward neutrinos at the Large Hadron Collider.  United States: N. p., 2020. 
Web.  doi:10.1007/jhep06(2020)032.

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                    Bai, Weidong, Diwan, Milind, Garzelli, Maria Vittoria, Jeong, Yu Seon, & Reno, Mary Hall. Far-forward neutrinos at the Large Hadron Collider.  United States.  https://doi.org/10.1007/jhep06(2020)032

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                    Bai, Weidong, Diwan, Milind, Garzelli, Maria Vittoria, Jeong, Yu Seon, and Reno, Mary Hall. Wed .  
"Far-forward neutrinos at the Large Hadron Collider".  United States.  https://doi.org/10.1007/jhep06(2020)032.  https://www.osti.gov/servlets/purl/1656864.

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@article{osti_1656864,

  title        = {Far-forward neutrinos at the Large Hadron Collider},

  author       = {Bai, Weidong and Diwan, Milind and Garzelli, Maria Vittoria and Jeong, Yu Seon and Reno, Mary Hall},

  abstractNote = {We present a new calculation of the energy distribution of high-energy neutrinos from the decay of charm and bottom hadrons produced at the Large Hadron Collider (LHC). In the kinematical region of very forward rapidities, heavy-flavor production and decay is a source of tau neutrinos that leads to thousands of charged-current tau neutrino events in a 1 m long, 1 m radius lead neutrino detector at a distance of 480 m from the interaction region. In our computation, next-to-leading order QCD radiative corrections are accounted for in the production cross-sections. Non-perturbative intrinsic-kT effects are approximated by a simple phenomenological model introducing a Gaussian kT-smearing of the parton distribution functions, which might also mimic perturbative effects due to multiple initial-state soft-gluon emissions. The transition from partonic to hadronic states is described by phenomenological fragmentation functions. To study the effect of various input parameters, theoretical predictions for D± s production are compared with LHCb data on double-differential cross-sections in transverse momentum and rapidity. The uncertainties related to the choice of the input parameter values, ultimately affecting the predictions of the tau neutrino event distributions, are discussed. We consider a 3+1 neutrino mixing scenario to illustrate the potential for a neutrino experiment to constrain the 3+1 parameter space using tau neutrinos and antineutrinos. We find large theoretical uncertainties in the predictions of the neutrino fluxes in the far-forward region. Untangling the effects of tau neutrino oscillations into sterile neutrinos and distinguishing a 3+1 scenario from the standard scenario with three active neutrino flavours, will be challenging due to the large theoretical uncertainties from QCD.},

  doi          = {10.1007/jhep06(2020)032},

  journal      = {Journal of High Energy Physics (Online)},

  number       = 6,

  volume       = 2020,

  place        = {United States},

  year         = {Wed Jun 03 00:00:00 EDT 2020},

  month        = {Wed Jun 03 00:00:00 EDT 2020}

}

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Works referencing / citing this record:

Probing Light Gauge Bosons in Tau Neutrino Experiments
text, January 2020

Kling, Felix
arXiv
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FORMOSA: Looking Forward to Millicharged Dark Sectors
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Oscillations of sterile neutrinos from dark matter decay eliminates the IceCube-Fermi tension
text, January 2021

Anchordoqui, Luis A.; Barger, Vernon; Marfatia, Danny
arXiv
DOI: 10.48550/arxiv.2101.09559

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Title: Far-forward neutrinos at the Large Hadron Collider

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