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Title: Evidence of coherent $$K^{+}$$ meson production in neutrino-nucleus scattering

Abstract

Neutrino-induced charged-current coherent kaon production ν μA→μ -K +A is a rare, inelastic electroweak process that brings a K + on shell and leaves the target nucleus intact in its ground state. This process is significantly lower in rate than the neutrino-induced charged-current coherent pion production because of Cabibbo suppression and a kinematic suppression due to the larger kaon mass. We search for such events in the scintillator tracker of MINERvA by observing the final state K +, μ -, and no other detector activity, and by using the kinematics of the final state particles to reconstruct the small momentum transfer to the nucleus, which is a model-independent characteristic of coherent scattering. Furthermore, we find the first experimental evidence for the process at 3σ significance.

Authors:
 [1]
  1. Univ. of Rochester, Rochester, NY (United States). et al.
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Org.:
MINERvA Collaboration
OSTI Identifier:
1275504
Alternate Identifier(s):
OSTI ID: 1283432
Report Number(s):
FERMILAB-PUB-16-282-ND; arXiv:1606.08890
Journal ID: ISSN 0031-9007; 1473763
Grant/Contract Number:  
AC02-07CH11359
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 117; Journal Issue: 6; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Wang, Z. Evidence of coherent $K^{+}$ meson production in neutrino-nucleus scattering. United States: N. p., 2016. Web. doi:10.1103/PhysRevLett.117.061802.
Wang, Z. Evidence of coherent $K^{+}$ meson production in neutrino-nucleus scattering. United States. doi:10.1103/PhysRevLett.117.061802.
Wang, Z. Fri . "Evidence of coherent $K^{+}$ meson production in neutrino-nucleus scattering". United States. doi:10.1103/PhysRevLett.117.061802. https://www.osti.gov/servlets/purl/1275504.
@article{osti_1275504,
title = {Evidence of coherent $K^{+}$ meson production in neutrino-nucleus scattering},
author = {Wang, Z.},
abstractNote = {Neutrino-induced charged-current coherent kaon production νμA→μ-K+A is a rare, inelastic electroweak process that brings a K+ on shell and leaves the target nucleus intact in its ground state. This process is significantly lower in rate than the neutrino-induced charged-current coherent pion production because of Cabibbo suppression and a kinematic suppression due to the larger kaon mass. We search for such events in the scintillator tracker of MINERvA by observing the final state K+, μ-, and no other detector activity, and by using the kinematics of the final state particles to reconstruct the small momentum transfer to the nucleus, which is a model-independent characteristic of coherent scattering. Furthermore, we find the first experimental evidence for the process at 3σ significance.},
doi = {10.1103/PhysRevLett.117.061802},
journal = {Physical Review Letters},
number = 6,
volume = 117,
place = {United States},
year = {2016},
month = {8}
}

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