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Title: Prompt neutrinos and intrinsic charm at SHiP

Abstract

We present a new evaluation of the far-forward neutrino plus antineutrino flux and number of events from charm hadron decays in a 400 GeV proton beam dump experiment like the Search for Hidden Particles (SHiP). Using next-to-leading order perturbative QCD and a model for intrinsic charm, we include intrinsic transverse momentum effects and other kinematic angular corrections. We compare this flux to a far-forward flux evaluated with next-to-leading order perturbative QCD, without intrinsic transverse momentum, that used the angular distribution of charm quarks rather than the neutrinos from their decays. The tau neutrino plus antineutrino number of events in the perturbative QCD evaluation is reduced by a factor of about three when intrinsic transverse momentum and the full decay kinematics are included. We show that intrinsic charm contributions can significantly enhance the number of events from neutrinos from charm hadron decays. Measurements of the number of events from tau neutrino plus antineutrino interactions and of the muon charge asymmetry as a function of energy can be used to constrain intrinsic charm models.

Authors:
ORCiD logo [1]; ORCiD logo [1]
  1. Univ. of Iowa, Iowa City, IA (United States)
Publication Date:
Research Org.:
Univ. of Iowa, Iowa City, IA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
OSTI Identifier:
1595317
Grant/Contract Number:  
SC0010113
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Volume: 2019; Journal Issue: 2; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Heavy quark physics; Neutrino physics

Citation Formats

Bai, Weidong, and Reno, Mary Hall. Prompt neutrinos and intrinsic charm at SHiP. United States: N. p., 2019. Web. doi:10.1007/JHEP02(2019)077.
Bai, Weidong, & Reno, Mary Hall. Prompt neutrinos and intrinsic charm at SHiP. United States. https://doi.org/10.1007/JHEP02(2019)077
Bai, Weidong, and Reno, Mary Hall. Wed . "Prompt neutrinos and intrinsic charm at SHiP". United States. https://doi.org/10.1007/JHEP02(2019)077. https://www.osti.gov/servlets/purl/1595317.
@article{osti_1595317,
title = {Prompt neutrinos and intrinsic charm at SHiP},
author = {Bai, Weidong and Reno, Mary Hall},
abstractNote = {We present a new evaluation of the far-forward neutrino plus antineutrino flux and number of events from charm hadron decays in a 400 GeV proton beam dump experiment like the Search for Hidden Particles (SHiP). Using next-to-leading order perturbative QCD and a model for intrinsic charm, we include intrinsic transverse momentum effects and other kinematic angular corrections. We compare this flux to a far-forward flux evaluated with next-to-leading order perturbative QCD, without intrinsic transverse momentum, that used the angular distribution of charm quarks rather than the neutrinos from their decays. The tau neutrino plus antineutrino number of events in the perturbative QCD evaluation is reduced by a factor of about three when intrinsic transverse momentum and the full decay kinematics are included. We show that intrinsic charm contributions can significantly enhance the number of events from neutrinos from charm hadron decays. Measurements of the number of events from tau neutrino plus antineutrino interactions and of the muon charge asymmetry as a function of energy can be used to constrain intrinsic charm models.},
doi = {10.1007/JHEP02(2019)077},
url = {https://www.osti.gov/biblio/1595317}, journal = {Journal of High Energy Physics (Online)},
issn = {1029-8479},
number = 2,
volume = 2019,
place = {United States},
year = {2019},
month = {2}
}

Journal Article:
Free Publicly Available Full Text
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Citation Metrics:
Cited by: 7 works
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Works referenced in this record:

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    Works referencing / citing this record:

    DsTau: study of tau neutrino production with 400 GeV protons from the CERN-SPS
    journal, January 2020


    Production asymmetry of ντ neutrinos and ν¯τ$$ {\overline{\nu}}_{\tau } $$ antineutrinos from a fixed target experiment SHiP
    journal, January 2020


    Independent quark/antiquark fragmentation to massive particles in proton–proton collisions
    journal, January 2020