B<inf>d</inf>0(t) → π+ π- and B<inf>s</inf>0(t) → K+ K- decays: A tool to measure new-physics parameters

David London; Joaquim Matias; Javier Virto

doi:10.1103/PhysRevD.71.014024

B<inf>d</inf>0(t) → π+ π- and B<inf>s</inf>0(t) → K+ K- decays: A tool to measure new-physics parameters

David London, Joaquim Matias, Javier Virto

Department of Physics

Research output: Contribution to journal › Article › Research › peer-review

Abstract

If physics beyond the standard model is present in B decays, experimental measurements seem to suggest that it principally affects those processes with significant b̄ → s̄ penguin amplitudes. It was recently argued that, in general, such new-physics (NP) effects can be parametrized in terms of a single NP amplitude Aq and phase Φq, for q = u, d, s, c. In this paper, we show that the study of the decays Bs0(t) → K+ K- and Bd0(t) → π+ π- allows one to measure the NP parameters Au and Φu. We examine the implications for this method of the latest experimental results on these decays. If NP is found in Bs0(t) → K+ K -, it can be partially identified through measurements of B s0(t) → K0 K̄0. © 2005 The American Physical Society.

Original language	English
Article number	014024
Journal	Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume	71
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevD.71.014024
Publication status	Published - 1 Jan 2005

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London, D., Matias, J., & Virto, J. (2005). B<inf>d</inf>0(t) → π+ π- and B<inf>s</inf>0(t) → K+ K- decays: A tool to measure new-physics parameters. Physical Review D - Particles, Fields, Gravitation and Cosmology, 71(1), [014024]. https://doi.org/10.1103/PhysRevD.71.014024

@article{43512f1cebf94611b88127b4946463da,

title = "Bd0(t) → π+ π- and Bs0(t) → K+ K- decays: A tool to measure new-physics parameters",

abstract = "If physics beyond the standard model is present in B decays, experimental measurements seem to suggest that it principally affects those processes with significant {\=b} → {\=s} penguin amplitudes. It was recently argued that, in general, such new-physics (NP) effects can be parametrized in terms of a single NP amplitude Aq and phase Φq, for q = u, d, s, c. In this paper, we show that the study of the decays Bs0(t) → K+ K- and Bd0(t) → π+ π- allows one to measure the NP parameters Au and Φu. We examine the implications for this method of the latest experimental results on these decays. If NP is found in Bs0(t) → K+ K -, it can be partially identified through measurements of B s0(t) → K0 {\=K}0. {\textcopyright} 2005 The American Physical Society.",

author = "David London and Joaquim Matias and Javier Virto",

year = "2005",

month = jan,

day = "1",

doi = "10.1103/PhysRevD.71.014024",

language = "English",

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B<inf>d</inf>0(t) → π+ π- and B<inf>s</inf>0(t) → K+ K- decays: A tool to measure new-physics parameters. / London, David; Matias, Joaquim; Virto, Javier.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 71, No. 1, 014024, 01.01.2005.

Research output: Contribution to journal › Article › Research › peer-review

TY - JOUR

T1 - Bd0(t) → π+ π- and Bs0(t) → K+ K- decays: A tool to measure new-physics parameters

AU - London, David

AU - Matias, Joaquim

AU - Virto, Javier

PY - 2005/1/1

Y1 - 2005/1/1

N2 - If physics beyond the standard model is present in B decays, experimental measurements seem to suggest that it principally affects those processes with significant b̄ → s̄ penguin amplitudes. It was recently argued that, in general, such new-physics (NP) effects can be parametrized in terms of a single NP amplitude Aq and phase Φq, for q = u, d, s, c. In this paper, we show that the study of the decays Bs0(t) → K+ K- and Bd0(t) → π+ π- allows one to measure the NP parameters Au and Φu. We examine the implications for this method of the latest experimental results on these decays. If NP is found in Bs0(t) → K+ K -, it can be partially identified through measurements of B s0(t) → K0 K̄0. © 2005 The American Physical Society.

AB - If physics beyond the standard model is present in B decays, experimental measurements seem to suggest that it principally affects those processes with significant b̄ → s̄ penguin amplitudes. It was recently argued that, in general, such new-physics (NP) effects can be parametrized in terms of a single NP amplitude Aq and phase Φq, for q = u, d, s, c. In this paper, we show that the study of the decays Bs0(t) → K+ K- and Bd0(t) → π+ π- allows one to measure the NP parameters Au and Φu. We examine the implications for this method of the latest experimental results on these decays. If NP is found in Bs0(t) → K+ K -, it can be partially identified through measurements of B s0(t) → K0 K̄0. © 2005 The American Physical Society.

U2 - 10.1103/PhysRevD.71.014024

DO - 10.1103/PhysRevD.71.014024

M3 - Article

VL - 71

IS - 1

M1 - 014024

ER -

B<inf>d</inf><sup>0</sup>(t) → π<sup>+</sup> π<sup>-</sup> and B<inf>s</inf><sup>0</sup>(t) → K<sup>+</sup> K<sup>-</sup> decays: A tool to measure new-physics parameters

Abstract

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