Investigating the physics case of running a B-factory at the Υ(5S) resonance

We discuss the physics case of a high luminosity B-Factory running at the gamma(5S) resonance. We show that the coherence of the B meson pairs is preserved at this resonance, and that B, can be well distinguished from B-d and charged B mesons. These facts allow to cover the physics program of a traditional B-Factory and, at the same time, to perform complementary measurements which are not accessible at the gamma(4S). In particular we show how, despite the experimental limitations in performing time-dependent measurements of B, decays, the same experimental information can be extracted, in several cases, from the determination of time-integrated observables. In addition, a few examples of the potentiality in measuring rare B-s decays are given. Finally, we discuss how the study of B-s meson will improve the constraints on New Physics parameters in the B-s sector, in the context of the generalized Unitarity Triangle analysis.

We discuss the physics case of a high luminosity B-Factory running at the Υ(5S) resonance. We show that the coherence of the B meson pairs is preserved at this resonance, and that Bs can be well distinguished from Bd and charged B mesons. These facts allow to cover the physics program of a traditional B-Factory and, at the same time, to perform complementary measurements which are not accessible at the Υ(4S). In particular we show how, despite the experimental limitations in performing time-dependent measurements of Bs decays, the same experimental information can be extracted, in several cases, from the determination of time-integrated observables. In addition, a few examples of the potentiality in measuring rare Bs decays are given. Finally, we discuss how the study of Bs meson will improve the constraints on New Physics parameters in the Bs sector, in the context of the generalized Unitarity Triangle analysis.