Novel T-violation observable open to any decay channel at meson factories

4th Symposium on Prospects in the Physics of Discrete Symmetries

Bernabeu, José^1 ; Botella, Francisco J.^1 ; Nebot, Miguel^2

Departament de Física Teòrica and IFIC, Universitat de València, CSIC, Burjassot

E-46100, Spain^1

Centro de Física Teórica de Partículas - CFTP, Instituto Superior Técnico - IST, Universidade de Lisboa UL, Avenida Rovisco Pais, Lisboa

1049-001, Portugal^2

关键词: Decay channels;    Direct observations;    Eigenstate decay;    Meson systems;    Quantum phenomena;    Survival probabilities;    Time dependent;    Time evolutions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/631/1/012017/pdf
DOI  :  10.1088/1742-6596/631/1/012017

来源: IOP

【 摘 要 】

Two genuine Quantum phenomena: Entanglement and Filtering Measurement are at the origin of the first direct observation of Time-Reversal-Violation in the time evolution of the B neutral meson system by BaBar. The used meson transitions are directly connected to semileptonic and CP-eigenstate decay channels. We analyse the possibility of extending the observable asymmetries to more decay channels. We propose an alternative T-Violation Asymmetry in the meson factories which allows its opening to any pair of decay channels. The new asymmetry needs also the measurement of the time dependent total survival probability of the initial tagged states. By combining several asymmetries these total survival probabilities can be avoided. We analyse carefully the channels that can be used and the sufficient condition in order the proposed asymmetry be a genuine T violation measurement.