Improved Limits on B0 Decays to Invisible Final States and to ννˉγ

The BaBar Collaboration; Philip Clark

doi:10.1103/PhysRevD.86.051105

Improved Limits on B0 Decays to Invisible Final States and to ννˉγ

The BaBar Collaboration, Philip Clark

School of Physics and Astronomy

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

Abstract

We establish improved upper limits on branching fractions for B0 decays to final States 10 where the decay products are purely invisible (i.e., no observable final state particles) and for final states where the only visible product is a photon. Within the Standard Model, these decays have branching fractions that are below the current experimental sensitivity, but various models of physics beyond the Standard Model predict significant contributions for these channels. Using 471 million BB pairs collected at the Y(4S) resonance by the BABAR experiment at the PEP-II e+e- storage ring at the SLAC National Accelerator Laboratory, we establish upper limits at the 90% confidence level of 2.4x10^-5 for the branching fraction of B0-->Invisible and 1.7x10^-5 for the branching fraction of B0-->Invisible+gamma

Original language	English
Pages (from-to)	051105
Number of pages	1
Journal	Physical Review D, particles, fields, gravitation, and cosmology
Volume	D86
Early online date	13 Jun 2012
DOIs	https://doi.org/10.1103/PhysRevD.86.051105
Publication status	Published - 27 Sept 2012

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10.1103/PhysRevD.86.051105

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title = "Improved Limits on B0 Decays to Invisible Final States and to ννˉγ",

abstract = "We establish improved upper limits on branching fractions for B0 decays to final States 10 where the decay products are purely invisible (i.e., no observable final state particles) and for final states where the only visible product is a photon. Within the Standard Model, these decays have branching fractions that are below the current experimental sensitivity, but various models of physics beyond the Standard Model predict significant contributions for these channels. Using 471 million BB pairs collected at the Y(4S) resonance by the BABAR experiment at the PEP-II e+e- storage ring at the SLAC National Accelerator Laboratory, we establish upper limits at the 90% confidence level of 2.4x10^-5 for the branching fraction of B0-->Invisible and 1.7x10^-5 for the branching fraction of B0-->Invisible+gamma ",

author = "Stephen Playfer and {The BaBar Collaboration} and Philip Clark",

year = "2012",

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day = "27",

doi = "10.1103/PhysRevD.86.051105",

language = "English",

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T1 - Improved Limits on B0 Decays to Invisible Final States and to ννˉγ

AU - Playfer, Stephen

AU - The BaBar Collaboration

AU - Clark, Philip

PY - 2012/9/27

Y1 - 2012/9/27

N2 - We establish improved upper limits on branching fractions for B0 decays to final States 10 where the decay products are purely invisible (i.e., no observable final state particles) and for final states where the only visible product is a photon. Within the Standard Model, these decays have branching fractions that are below the current experimental sensitivity, but various models of physics beyond the Standard Model predict significant contributions for these channels. Using 471 million BB pairs collected at the Y(4S) resonance by the BABAR experiment at the PEP-II e+e- storage ring at the SLAC National Accelerator Laboratory, we establish upper limits at the 90% confidence level of 2.4x10^-5 for the branching fraction of B0-->Invisible and 1.7x10^-5 for the branching fraction of B0-->Invisible+gamma

AB - We establish improved upper limits on branching fractions for B0 decays to final States 10 where the decay products are purely invisible (i.e., no observable final state particles) and for final states where the only visible product is a photon. Within the Standard Model, these decays have branching fractions that are below the current experimental sensitivity, but various models of physics beyond the Standard Model predict significant contributions for these channels. Using 471 million BB pairs collected at the Y(4S) resonance by the BABAR experiment at the PEP-II e+e- storage ring at the SLAC National Accelerator Laboratory, we establish upper limits at the 90% confidence level of 2.4x10^-5 for the branching fraction of B0-->Invisible and 1.7x10^-5 for the branching fraction of B0-->Invisible+gamma

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DO - 10.1103/PhysRevD.86.051105

M3 - Article

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SP - 051105

JO - Physical Review D, particles, fields, gravitation, and cosmology

JF - Physical Review D, particles, fields, gravitation, and cosmology

ER -

Improved Limits on B0 Decays to Invisible Final States and to ννˉγ

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