Journal
PHYSICAL REVIEW D
Volume 84, Issue 1, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.84.012009
Keywords
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Funding
- Fermilab
- MEXT
- JSPS (Japan)
- INFN (Italy)
- Ministry of Science and Innovation
- CSIC (Spain)
- STFC (UK)
- DOE
- NSF (USA)
- JSPS [19204026, 20674004, 18740145]
- global COE program
- Japan/U.S. Cooperation Program
- NSF
- STFC [ST/F009976/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/F009976/1] Funding Source: researchfish
- Grants-in-Aid for Scientific Research [19204026, 18740145] Funding Source: KAKEN
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The SciBooNE Collaboration reports K+ production cross section and rate measurements using high-energy daughter muon neutrino scattering data off the SciBar polystyrene (C8H8) target in the SciBooNE detector. The K+ mesons are produced by 8 GeV protons striking a beryllium target in Fermilab Booster Neutrino Beam line (BNB). Using observed neutrino and antineutrino events in SciBooNE, we measure d(2)sigma/dpd Omega = (5.34 +/- 0.76) mb/(GeV/c x sr) for p + Be -> K+ + X at mean K+ energy of 3.9 GeVand angle (with respect to the proton beam direction) of 3.7 degrees, corresponding to the selected K+ sample. Compared to Monte Carlo predictions using previous higher energy K+ production measurements, this measurement, which uses the NUANCE neutrino interaction generator, is consistent with a normalization factor of 0.85 +/- 0.12. This agreement is evidence that the extrapolation of the higher energy K+ measurements to an 8 GeV beam energy using Feynman scaling is valid. This measurement reduces the error on the K+ production cross section from 40% to 14%.
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