Using U spin to extract gamma from charmless B -> PPP decays

作者：Bhattacharya Bhubanjyoti^*; London David

来源：The Journal of High Energy Physics, 2015, 2015(4): 154.

DOI：10.1007/JHEP04(2015)154

• B-Physics
• CP violation

Some years ago, a method was proposed for measuring the CP-violating phase gamma using pairs of two-body decays that are related by U-spin reflection (d <-> s). In this paper we adapt this method to charmless B --> PPP decays. Time-dependent Dalitz-plot analyses of these three-body decays are required for the measurement of the mixing-induced CP asymmetries. However, isobar analyses of the decay amplitudes are not necessary. A potential advantage of using three-body decays is that the effects of U-spin breaking may be reduced by averaging over the Dalitz plot. This can be tested independently using the measurerments of direct GP asymmetries and branching ratios in three-body charged B decays.

• 出版日期2015-4-28