Prompt neutrinos and intrinsic charm at SHiP

Bai, Weidong; Reno, Mary Hall

doi:10.1007/JHEP02(2019)077

Title: Prompt neutrinos and intrinsic charm at SHiP

Journal Article · 12 February 2019 · Journal of High Energy Physics (Online)

DOI: https://doi.org/10.1007/JHEP02(2019)077 · OSTI ID:1595317

^[1];

^[2]

Univ. of Iowa, Iowa City, IA (United States); University of Iowa
Univ. of Iowa, Iowa City, IA (United States)

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.

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Research Organization:: Univ. of Iowa, Iowa City, IA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)

Grant/Contract Number:: SC0010113

OSTI ID:: 1595317

Journal Information:: Journal of High Energy Physics (Online), Journal Name: Journal of High Energy Physics (Online) Journal Issue: 2 Vol. 2019; ISSN 1029-8479

Publisher:: Springer BerlinCopyright Statement

Country of Publication:: United States

Language:: English

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DsTau: study of tau neutrino production with 400 GeV protons from the CERN-SPS Aoki, Shigeki; Ariga, Akitaka; Ariga, Tomoko Journal of High Energy Physics, Vol. 2020, Issue 1 https://doi.org/10.1007/jhep01(2020)033	journal	January 2020
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Independent quark/antiquark fragmentation to massive particles in proton–proton collisions Maciuła, Rafał; Szczurek, Antoni Journal of Physics G: Nuclear and Particle Physics, Vol. 47, Issue 3 https://doi.org/10.1088/1361-6471/ab5ad7	journal	January 2020
DsTau: Study of tau neutrino production with 400 GeV protons from the CERN-SPS Aoki, Shigeki; Ariga, Akitaka; Ariga, Tomoko arXiv https://doi.org/10.48550/arxiv.1906.03487	text	January 2019

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