Measurement of the ratio of branching fractions B(B0→K*0γ)/B(Bs0→ϕγ)

The LHCb Collaboration; Matthew Needham; Franz Muheim; Peter Clarke; Yuehong Xie; Stephan Eisenhardt

doi:10.1103/PhysRevD.85.112013

Measurement of the ratio of branching fractions B(B0→K*0γ)/B(Bs0→ϕγ)

The LHCb Collaboration, Matthew Needham, Franz Muheim, Peter Clarke, Yuehong Xie, Stephan Eisenhardt

School of Physics and Astronomy

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

Abstract

The ratio of branching fractions of the radiative B decays B0→K*0γ and B0s→ϕγ has been measured using 0.37 fb-1 of pp collisions at a center of mass energy of √s=7 TeV, collected by the LHCb experiment. The value obtained is B(B0→K*0γ)/B(B0s→ϕγ)=1.12±0.08-0.04-0.08+0.06+0.09, where the first uncertainty is statistical, the second systematic, and the third is associated with the ratio of fragmentation fractions fs/fd. Using the world average for B(B0→K*0γ)=(4.33±0.15)×10-5, the branching fraction B(B0s→ϕγ) is measured to be (3.9±0.5)×10-5, which is the most precise measurement to date.

Original language	English
Pages (from-to)	112013
Number of pages	1
Journal	Physical Review D
Volume	D85
Early online date	1 Mar 2012
DOIs	https://doi.org/10.1103/PhysRevD.85.112013
Publication status	Published - 25 Jun 2012

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title = "Measurement of the ratio of branching fractions B(B0→K*0γ)/B(Bs0→ϕγ)",

abstract = "The ratio of branching fractions of the radiative B decays B0→K*0γ and B0s→ϕγ has been measured using 0.37 fb-1 of pp collisions at a center of mass energy of √s=7 TeV, collected by the LHCb experiment. The value obtained is B(B0→K*0γ)/B(B0s→ϕγ)=1.12±0.08-0.04-0.08+0.06+0.09, where the first uncertainty is statistical, the second systematic, and the third is associated with the ratio of fragmentation fractions fs/fd. Using the world average for B(B0→K*0γ)=(4.33±0.15)×10-5, the branching fraction B(B0s→ϕγ) is measured to be (3.9±0.5)×10-5, which is the most precise measurement to date.",

author = "Stephen Playfer and {The LHCb Collaboration} and Matthew Needham and Franz Muheim and Peter Clarke and Yuehong Xie and Stephan Eisenhardt",

year = "2012",

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doi = "10.1103/PhysRevD.85.112013",

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T1 - Measurement of the ratio of branching fractions B(B0→K*0γ)/B(Bs0→ϕγ)

AU - Playfer, Stephen

AU - The LHCb Collaboration

AU - Needham, Matthew

AU - Muheim, Franz

AU - Clarke, Peter

AU - Xie, Yuehong

AU - Eisenhardt, Stephan

PY - 2012/6/25

Y1 - 2012/6/25

N2 - The ratio of branching fractions of the radiative B decays B0→K*0γ and B0s→ϕγ has been measured using 0.37 fb-1 of pp collisions at a center of mass energy of √s=7 TeV, collected by the LHCb experiment. The value obtained is B(B0→K*0γ)/B(B0s→ϕγ)=1.12±0.08-0.04-0.08+0.06+0.09, where the first uncertainty is statistical, the second systematic, and the third is associated with the ratio of fragmentation fractions fs/fd. Using the world average for B(B0→K*0γ)=(4.33±0.15)×10-5, the branching fraction B(B0s→ϕγ) is measured to be (3.9±0.5)×10-5, which is the most precise measurement to date.

AB - The ratio of branching fractions of the radiative B decays B0→K*0γ and B0s→ϕγ has been measured using 0.37 fb-1 of pp collisions at a center of mass energy of √s=7 TeV, collected by the LHCb experiment. The value obtained is B(B0→K*0γ)/B(B0s→ϕγ)=1.12±0.08-0.04-0.08+0.06+0.09, where the first uncertainty is statistical, the second systematic, and the third is associated with the ratio of fragmentation fractions fs/fd. Using the world average for B(B0→K*0γ)=(4.33±0.15)×10-5, the branching fraction B(B0s→ϕγ) is measured to be (3.9±0.5)×10-5, which is the most precise measurement to date.

U2 - 10.1103/PhysRevD.85.112013

DO - 10.1103/PhysRevD.85.112013

M3 - Article

VL - D85

SP - 112013

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

ER -

Measurement of the ratio of branching fractions B(B0→K*0γ)/B(Bs0→ϕγ)

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