BNL · 1980

Study of Low-energy Anti-neutrino Interactions on Protons

Phys.Rev.D 21 562 · 10.1103/PhysRevD.21.562

Measurements

Current	Flavor	Target	Topology	Type	Observables	Energy
CC	ν̄μ	H2	Inclusive	total	inclusive antineutrino-proton CC cross section	BNL 7-ft hydrogen, ~1.1GeV
CC	ν̄μ	H2	CCQE	—	quasielastic antineutrino-proton, axial mass	—

Abstract

We present a study of antineutrino interactions in hydrogen obtained in a 138000-picture run at the BNL 7-ft bubble chamber. The antineutrino beam had an energy distribution that peaked at ∼1.1 GeV. The cross section measured for charged-current interactions is σ(ν¯p→μ++anything)=(0.32±0.08)×10−38×[Eν¯ (GeV)] cm2. The neutral-current cross section is σ(ν¯p→ν¯pπ+π−)=5.5−2.6+4.4×10−40 cm2. The ratio of strangeness-changing to non-strangeness-changing charged currents is Rs=0.06−0.05+0.13. An upper limit determined for charm production is σc<3.8×10−40 cm2 at the 90% confidence level. From the momentum-transfer distribution we measure average Q2 for inelastic charged-current events with energy greater than 2 GeV, 〈Q2〉=(0.10±0.03)[Eν¯ (GeV)]+(0.10±0.09) (GeV/c)2. Using a maximum-likelihood method we determine from the quasielastic events ν¯p→μ+n an axial-vector mass MA=0.9−0.3+0.4 GeV/c2.

Citation

@article{Fanourakis:1980si,
  collaboration = "BNL",
  title = "{Study of Low-energy Anti-neutrino Interactions on Protons}",
  doi = "10.1103/PhysRevD.21.562",
  journal = "Phys.Rev.D",
  volume = "21",
  pages = "562",
  year = "1980",
}