A search for the decay B-s(0) -> D*(-/+)pi(+/-) is presented using a data sample corresponding to an integrated luminosity of 1.0 fb(-1) of pp collisions collected by LHCb. This decay is expected to be mediated by a W-exchange diagram, with little contribution from rescattering processes, and therefore a measurement of the branching fraction will help us to understand the mechanism behind related decays such as B-s(0) -> pi(+)pi(-) and B-s(0) -> D (D) over bar. Systematic uncertainties are minimized by using B-0 -> D*(-/+)pi(+/-) as a normalization channel. We find no evidence for a signal, and set an upper limit on the branching fraction of B(B-s(0) -> D*(-/+)pi(+/-) < 6.1(7.8) x 10(-6) at 90% (95%) confidence level. DOI: 10.1103/PhysRevD.87.071101
Titolo: | Search for the decay B-s(0) -> D*(-/+)pi(+/-) | |
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Data di pubblicazione: | 2013 | |
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Digital Object Identifier (DOI): | http://dx.doi.org/10.1103/PhysRevD.87.071101 | |
Handle: | http://hdl.handle.net/11384/39036 | |
Appare nelle tipologie: | 1.1 Articolo in rivista |