“…We use measurements of the inelastic cross sections for proton, pion, and kaon beams with carbon and aluminum targets [56][57][58][59][60][61][62][63][64][65][66] to weight based on particle interaction and absorption rates in the flux prediction. In particular, NA61/SHINE measures the inclusive "production" cross section of 31 GeV/c protons on carbon: σ prod = 229.3 ± 9.2 mb [45].…”
Section: Hadron Production Data Weighting and Uncertaintiesmentioning
The T2K collaboration reports evidence for electron neutrino appearance at the atmospheric mass splitting, |∆m 2 32 | ≈ 2.4 × 10 −3 eV 2 . An excess of electron neutrino interactions over background is observed from a muon neutrino beam with a peak energy of 0.6 GeV at the Super-Kamiokande (SK) detector 295 km from the beam's origin. Signal and background predictions are constrained by data from near detectors located 280 m from the neutrino production target. We observe 11 electron neutrino candidate events at the SK detector when a background of 3.3 ± 0.4(syst.) events is expected. The background-only hypothesis is rejected with a p-value of 0.0009 (3.1σ), and a 3 fit assuming νµ → νe oscillations with sin 2 2θ23=1, δCP =0 and |∆m 2 32 | = 2.4 × 10 −3 eV 2 yields sin 2 2θ13=0.088+0.049 −0.039 (stat.+syst.).
“…We use measurements of the inelastic cross sections for proton, pion, and kaon beams with carbon and aluminum targets [56][57][58][59][60][61][62][63][64][65][66] to weight based on particle interaction and absorption rates in the flux prediction. In particular, NA61/SHINE measures the inclusive "production" cross section of 31 GeV/c protons on carbon: σ prod = 229.3 ± 9.2 mb [45].…”
Section: Hadron Production Data Weighting and Uncertaintiesmentioning
The T2K collaboration reports evidence for electron neutrino appearance at the atmospheric mass splitting, |∆m 2 32 | ≈ 2.4 × 10 −3 eV 2 . An excess of electron neutrino interactions over background is observed from a muon neutrino beam with a peak energy of 0.6 GeV at the Super-Kamiokande (SK) detector 295 km from the beam's origin. Signal and background predictions are constrained by data from near detectors located 280 m from the neutrino production target. We observe 11 electron neutrino candidate events at the SK detector when a background of 3.3 ± 0.4(syst.) events is expected. The background-only hypothesis is rejected with a p-value of 0.0009 (3.1σ), and a 3 fit assuming νµ → νe oscillations with sin 2 2θ23=1, δCP =0 and |∆m 2 32 | = 2.4 × 10 −3 eV 2 yields sin 2 2θ13=0.088+0.049 −0.039 (stat.+syst.).
“…0 and À þ data was performed, which gives the weighed mean of mass and width of 3 ð1990Þ as listed in Table I. There are many experimental papers relevant to 3 ð2250Þ as shown in PDG [1]. 3 ð2250Þ was first observed by BNL through studying the S-channel " pN cross section [63]. Later, 3 ð2250Þ was also found in the reactions [67][68][69].…”
Section: Statementioning
confidence: 99%
“…process and S-channel N " N interaction. Here, the experimental total widths of ð2150Þ are (350 [54], 389 [49], 410 [48], 310 [54]) MeV, (296 [7], 40 [104], 250 [69], 200 [68]) MeV, and (230 [3], 135 [64], 98 [105], 85 [63]) MeV corresponding to the e þ e À interaction, p " p ! channel, and S-channel N " N process, respectively.…”
In this work, we systematically study the two-body strong decay of the = 3 states, which are observed and grouped into the = 3 meson family. By performing the phenomenological analysis, the underlying properties of these states are obtained and tested. What is more important is that abundant information of their two-body strong decays is predicted, which will be helpful to further and experimentally study these states.
“…Much of these data are available from compilations [30,31,32] but we try to give references to the original data as much as possible [33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53].…”
We have performed a partial-wave analysis of K + -nucleon scattering in the momentum range from 0 to 1.5 GeV/c addressing the uncertainties of the results and comparing them with several previous analyses. It is found that the treatment of the reaction threshold behavior is particularly important. We find a T=0 scattering length which is not consistent with zero, as has been claimed by other analyses. The T=0 phase shifts for ℓ > 0 are consistent with a pure spin-orbit potential. Some indications for the production of a T=0 pentaquark with spin-parity D5/2+ are discussed.
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