Wang, Z;
Marshall, CM;
Aliaga, L;
Altinok, O;
Bellantoni, L;
Bercellie, A;
Betancourt, M;
... Zhang, D; + view all
(2016)
Evidence of Coherent K+ Meson Production in Neutrino-Nucleus Scattering.
Physical Review Letters
, 117
(6)
, Article 061802. 10.1103/PhysRevLett.117.061802.
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Abstract
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. We find the first experimental evidence for the process at 3σ significance.
Type: | Article |
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Title: | Evidence of Coherent K+ Meson Production in Neutrino-Nucleus Scattering |
Open access status: | An open access version is available from UCL Discovery |
DOI: | 10.1103/PhysRevLett.117.061802 |
Publisher version: | http://doi.org/10.1103/PhysRevLett.117.061802 |
Language: | English |
Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences |
URI: | https://discovery.ucl.ac.uk/id/eprint/10065103 |
1. | China | 3 |
2. | United States | 2 |
3. | Russian Federation | 2 |
4. | Indonesia | 1 |
5. | United Kingdom | 1 |
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