Regular Article - Theoretical Physics
Enhanced CP asymmetries in
IJCLab, Pôle Théorie (Bât. 210), CNRS/IN2P3 et Université Paris-Saclay, 91405, Orsay, France
2 Department of Physics, University of Ljubljana, Jadranska 19, 1000, Ljubljana, Slovenia
3 Jožef Stefan Institute, P. O. Box 3000, Jamova 39, 1001, Ljubljana, Slovenia
Accepted: 2 October 2020
Published online: 12 October 2020
We show that the current values of and can be accommodated by allowing a nonzero New Physics coupling to be complex, both in the scenario in which only is affected, and in the scenario with complex satisfying . A presence of the weak CP-violating phase can then be tested by measuring the CP-asymmetry, . We show that this asymmetry is enhanced around the peak of each -resonance, and in fact more pronounced in the close vicinity of and . Therefore, measuring before and after the resonances’ peak could be revelatory of the CP-violation that originates from beyond the Standard Model, or to be a significant constrain when building a realistic scenario of New Physics.
© The Author(s) 2020
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