arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1004.5484hep-ph
收藏

核子外弱K介子的产生

Weak Kaon Production off the Nucleon

M. Rafi Alam, I. Ruiz Simo, M. Sajjad Athar, M. J. Vicente Vacas

摘要:

本文研究了中低能中微子诱导的核子弱K介子产生,为今后的中微子振荡实验提供了理论依据。这一过程对于质子衰变实验的分析也具有潜在的重要性。我们发展了一个基于SU(3)手征拉格朗日量的微观模型。模型的基本参数是fpi、π衰变常数、Cabibbo角、质子和中子磁矩以及重子八重态的轴向矢量耦合常数、D和F,它们是通过分析中子和超子的半轻子衰变得到的。所研究的机制是K介子生产的中微子能量高达1.2至1.5 GeV的各种渠道和截面的主要来源是足够大,可以通过实验,如密涅瓦和T2 K进行测量。

英文摘要:

The weak kaon production off the nucleon induced by neutrinos is studied at the low and intermediate energies of interest for some ongoing and future neutrino oscillation experiments. This process is also potentially important for the analysis of proton decay experiments. We develop a microscopical model based on the SU(3) chiral Lagrangians. The basic parameters of the model are fpi, the pion decay constant, Cabibbo's angle, the proton and neutron magnetic moments and the axial vector coupling constants for the baryons octet, D and F, that are obtained from the analysis of the semileptonic decays of neutron and hyperons. The studied mechanisms are the main source of kaon production for neutrino energies up to 1.2 to 1.5 GeV for the various channels and the cross sections are large enough to be amenable to be measured by experiments such as Minerva and T2K.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑