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%.
Measurement of K+ production cross section by 8 GeV protons using high-energy neutrino interactions in the SciBooNE detector / G., Cheng; C., Mariani; J. L., Alcaraz Aunion; S. J., Brice; L., Bugel; J., Catala Perez; J. M., Conrad; Z., Djurcic; Dore, Ubaldo; D. A., Finley; A. J., Franke; C., Giganti; J. J., Gomez Cadenas; P., Guzowski; A., Hanson; Y., Hayato; K., Hiraide; G., Jover Manas; G., Karagiorgi; T., Katori; Y. K., Kobayashi; T., Kobilarcik; H., Kubo; Y., Kurimoto; W. C., Louis; Loverre, Pier Ferruccio; L., Ludovici; K. B. M., Mahn; S., Masuike; K., Matsuoka; V. T., Mcgary; W., Metcalf; G. B., Mills; G., Mitsuka; Y., Miyachi; S., Mizugashira; C. D., Moore; Y., Nakajima; T., Nakaya; R., Napora; P., Nienaber; D., Orme; M., Otani; A. D., Russell; F., Sanchez; M. H., Shaevitz; T. A., Shibata; M., Sorel; R. J., Stefanski; H., Takei; H. K., Tanaka; M., Tanaka; R., Tayloe; I. J., Taylor; R. J., Tesarek; Y., Uchida; R. V., De; R., Van De Water; J. J., Walding; M. O., Wascko; H. B., White; M., Yokoyama; G. P., Zeller; E. D., Zimmerman; Sciboone, Collaboration. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 84:1(2011), p. 012009. [10.1103/physrevd.84.012009]
Measurement of K+ production cross section by 8 GeV protons using high-energy neutrino interactions in the SciBooNE detector
DORE, Ubaldo;LOVERRE, Pier Ferruccio;
2011
Abstract
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%.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
