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Constraining new physics with the Fermilab measurement of CP violation in B ->psi K-s

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dc.contributor.author	Barenboim Szuchman, Gabriela Alejandra
dc.contributor.author	Eyal, Galit
dc.contributor.author	Nir, Yosef
dc.date.accessioned	2016-05-03T09:35:11Z
dc.date.available	2016-05-03T09:35:11Z
dc.date.issued	1999
dc.identifier.citation	Barenboim Szuchman, Gabriela Alejandra Eyal, Galit Nir, Yosef 1999 Constraining new physics with the Fermilab measurement of CP violation in B ->psi K-s Physical Review Letters 83 22 4486 4489
dc.identifier.uri	http://hdl.handle.net/10550/53219
dc.description.abstract	Recently, the CDF Collaboration has reported a measurement of the CP asymmetry in the B --> psi K-s decay: a(psi K), = 0.74(-0.44)(+0.44). We analyze the constraints that follow from this measurement on the size and the phase of contributions from new physics to B-B mixing. Defining the relative phase between the full Mt:! amplitude and the standard model contribution to be 2 theta(d), we find a new bound: sin2 theta(d) greater than or similar to -0.6 (-0.87) at 1 sigma (95% C.L.). Further implications for the CP asymmetry in semileptonic B decays are discussed.
dc.language.iso	eng
dc.relation.ispartof	Physical Review Letters, 1999, vol. 83, num. 22, p. 4486-4489
dc.subject	Física
dc.title	Constraining new physics with the Fermilab measurement of CP violation in B ->psi K-s
dc.type	journal article	es_ES
dc.date.updated	2016-05-03T09:35:11Z
dc.identifier.doi	10.1103/PhysRevLett.83.4486
dc.identifier.idgrec	110781
dc.rights.accessRights	open access	es_ES