Measurements of Cross Sections and Charged Pion Spectra in Proton-Carbon Interactions at 31 GeV/c
N. Abgrall, A. Aduszkiewicz, B. Andrieu, T. Anticic, N. Antoniou, J. Argyriades, A. G. Asryan, B. Baatar, A. Blondel, J. Blumer, M. Bogusz, L. Boldizsar, A. Bra… 展开作者
N. Abgrall, A. Aduszkiewicz, B. Andrieu, T. Anticic, N. Antoniou, J. Argyriades, A. G. Asryan, B. Baatar, A. Blondel, J. Blumer, M. Bogusz, L. Boldizsar, A. Bravar, W. Brooks, J. Brzychczyk, A. Bubak, S. A. Bunyatov, O. Busygina, T. Cetner, K. -U. Choi, P. Christakoglou, P. Chung, T. Czopowicz, N. Davis, F. Diakonos, S. Di Luise, W. Dominik, J. Dumarchez, R. Engel, A. Ereditato, L. S. Esposito, G. A. Feofilov, Z. Fodor, A. Ferrero, A. Fulop, X. Garrido, M. Gazdzicki, M. Golubeva, K. Grebieszkow, A. Grzeszczuk, F. Guber, H. Hakobyan, T. Hasegawa, S. Igolkin, A. S. Ivanov, Y. Ivanov, A. Ivashkin, K. Kadija, A. Kapoyannis, N. Katrynska, D. Kielczewska, D. Kikola, J. -H. Kim, M. Kirejczyk, J. Kisiel, T. Kobayashi, O. Kochebina, V. I. Kolesnikov, D. Kolev, V. P. Kondratiev, A. Korzenev, S. Kowalski, S. Kuleshov, A. Kurepin, R. Lacey, J. Lagoda, A. Laszlo, V. V. Lyubushkin, M. Mackowiak, Z. Majka, A. I. Malakhov, A. Marchionni, A. Marcinek, I. Maris, V. Marin, T. Matulewicz, V. Matveev, G. L. Melkumov, A. Meregaglia, M. Messina, St. Mrowczynski, S. Murphy, T. Nakadaira, P. A. Naumenko, K. Nishikawa, T. Palczewski, G. Palla, A. D. Panagiotou, W. Peryt, O. Petukhov, R. Planeta, J. Pluta, B. A. Popov, M. Posiadala, S. Pulawski, W. Rauch, M. Ravonel, R. Renfordt, A. Robert, D. Rohrich, E. Rondio, B. Rossi, M. Roth, A. Rubbia, M. Rybczynski, A. Sadovsky, K. Sakashita, T. Sekiguchi, P. Seyboth, M. Shibata, A. N. Sissakian, E. Skrzypczak, M. Slodkowski, A. S. Sorin, P. Staszel, G. Stefanek, J. Stepaniak, C. Strabel, H. Strobele, T. Susa, P. Szaflik, M. Szuba, M. Tada, A. Taranenko, R. Tsenov, R. Ulrich, M. Unger, M. Vassiliou, V. V. Vechernin, G. Vesztergombi, A. Wilczek, Z. Wlodarczyk, A. Wojtaszek, J. -G. Yi, I. -K. Yoo, W. Zipper
Interaction cross sections and charged pion spectra in p+C interactions at 31 GeV/c were measured with the large acceptance NA61/SHINE spectrometer at the CERN SPS. These data are required to improve predictions of the neutrino flux for the T2K long baseline neutrino oscillation experiment in Japan. A set of data collected during the first NA61/SHINE run in 2007 with an isotropic graphite target with a thickness of 4% of a nuclear interaction length was used for the analysis. The measured p+C inelastic and production cross sections are 257.2 +- 1.9 +- 8.9 mb and 229.3 +- 1.9 +- 9.0 mb, respectively. Inclusive production cross sections for negatively and positively charged pions are presented as a function of laboratory momentum in 10 intervals of the laboratory polar angle covering the range from 0 up to 420 mrad. The spectra are compared with predictions of several hadron production models.
Cross-sections of large-angle hadron production in proton- and pion-nucleus interactions VI: carbon nuclei and beam momenta from \pm 3 GeV/c to \pm 15 GeV/c
Measurements of protons and charged pions emitted from $ν_μ$ charged-current interactions on iron at a mean neutrino energy of 1.49$\,$GeV using a nuclear emulsion detector
Measurement of Transverse Single-Spin Asymmetries for Mid-rapidity Production of Neutral Pions and Charged Hadrons in Polarized p+p Collisions at sqrt(s) = 200 GeV
Measurement of branching fractions for two-body charmless B decays to charged pions and kaons at BABAR
We present preliminary results of a search for charmless two-body B decays to charged pions and kaons using data collected by the BABAR detector at the Stanford Linear Accelerator Center's PEP-II storage ring. In a sample of 8.8 million produced B-anti-B pairs we measure the branching fractions B(B^0 --> pi^+pi^-) = (9.3^{+2.6}_{-2.3}^{+1.2}_{-1.4}) x 10^{-6} and B(B^0 --> K^+π^-) = (12.5^{+3.0}_{-2.6}^{+1.3}_{-1.7}) x 10^{-6}, where the first uncertainty is statistical and the second is systematic. For the decay B^0 --> K^+K^- we find no significant signal and set an upper limit of B(B^0 --> …
Muon antineutrino charged-current cross sections without pions in the final state at T2K
T2 K（Tokai to Kamioka）是位于日本的长基线中微子振荡实验，旨在使用离轴中微子束测量中微子味振荡。最近收集的数据与反中微子束允许T2 K测量截面的反中微子在能量约600兆电子伏使用离轴近探测器。这些测量，以及中微子的类似测量，是中微子振荡分析和解释的重要输入。在这项工作中的μ介子中微子和反中微子的带电电流截面的同时提取的初步结果，没有π介子在末态。这两个截面将作为μ子运动学的函数进行测量，以评估两个截面之间的和、差和不对称性。这些结果对于比较和调整多核子相互作用（也称为2粒子2空穴过程）等核效应的理论模型是有用的。
Measurements of Hadron Production in Pion-Carbon Interactions with NA61/SHINE at the CERN SPS
NA 61/SHINE是在CERN超级质子同步加速器上设计的一个固定靶实验，用于研究强子-质子、强子-核和核-核相互作用。在这一过程中，我们提出了在π介子-碳生产相互作用，这是根本的重要性，以改善广泛的空气簇射建模，从而解释超高能宇宙射线测量确定强子的光谱结果。特别是，我们的测量（反）重子和$ρ^0$生产的π-碳相互作用可以有助于改善预测的μ子生产的空气簇射模拟使用强子相互作用模型。在这篇文章中，我们讨论了数据分析和结果从介子-碳碰撞记录在束流动量为158和350 GeV/c。初步频谱的$K^{\pm}$和$p$（$\bar{p}$），以及比较预测的强子相互作用模型中使用的空气簇射模拟。此外，我们目前的最终结果的生产$ρ^0$，$ω$和$K^{0*}$共振。
Comments concerning the paper "Measurement of negatively charged pion spectra in inelastic p+p interactions at 20, 31, 40, 80 and 158 GeV/c" by the NA61 collaboration
