Measurement of the parity-violating asymmetry parameter a b and the helicity amplitudes for the decay ? b 0 ? J / ? ? 0 with the ATLAS detector
Measurement of the parity-violating asymmetry parameter a b and the helicity amplitudes for the decay ? b 0 ? J / ? ? 0 with the ATLAS detector
复制标题
测量宇称不守恒的不对称参数 a b 和衰减的螺旋幅度 ?
DOI：
10.1103/physrevd.89.092009
复制
发表时间：
2014
影响因子：
5
通讯作者：
Aad G
中科院分区：
文献类型：
--
作者：
Aad G
测量了宇称破坏衰变的不对称性参数和衰变的螺旋度振幅。分析是基于1400和重子选择在质子-质子碰撞数据的质量中心的能量为7 TeV的ATLAS实验在LHC记录。在守恒假设下，通过将和样本合并，测得的值为.这种测量提供了一个测试的理论模型的基础上微扰QCD或重夸克有效理论。
A measurement of the parity-violating decay asymmetry parameter,, and the helicity amplitudes for the decayis reported. The analysis is based on 1400andbaryons selected inof proton–proton collision data with a center-of-mass energy of 7 TeV recorded by the ATLAS experiment at the LHC. By combining theandsamples under the assumption ofconservation, the value ofis measured to be. This measurement provides a test of theoretical models based on perturbative QCD or heavy-quark effective theory.