Measurement of the B̅ s0 Effective Lifetime in the J/ψf0(980) Final State

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

doi:10.1103/PhysRevLett.109.152002

Measurement of the B̅ s0 Effective Lifetime in the J/ψf0(980) Final State

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

School of Physics and Astronomy

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

Abstract / Description of output

The effective lifetime of the Bs meson in the decay mode Bs->J/\psi fo(980) is measured using 1.0/fb of data collected in pp collisions at sqrt(s) = 7 TeV with the LHCb detector. The result is 1.700 +/- 0.040 +/- 0.026 ps where the first uncertainty is statistical and the second systematic. As the final state is CP-odd, and CP violation in this mode is measured to be small, the lifetime measurement can be translated into a measurement of the decay width of the heavy Bs mass eigenstate, \Gamma_H = (0.588 +/- 0.014 +/- 0.009)/ps.

Original language	English
Article number	152002
Number of pages	8
Journal	Physical Review Letters
Volume	109
Issue number	15
Early online date	4 Jul 2012
DOIs	https://doi.org/10.1103/PhysRevLett.109.152002
Publication status	Published - 9 Oct 2012

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10.1103/PhysRevLett.109.152002

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title = "Measurement of the B̅ s0 Effective Lifetime in the J/ψf0(980) Final State",

abstract = "The effective lifetime of the Bs meson in the decay mode Bs->J/\psi fo(980) is measured using 1.0/fb of data collected in pp collisions at sqrt(s) = 7 TeV with the LHCb detector. The result is 1.700 +/- 0.040 +/- 0.026 ps where the first uncertainty is statistical and the second systematic. As the final state is CP-odd, and CP violation in this mode is measured to be small, the lifetime measurement can be translated into a measurement of the decay width of the heavy Bs mass eigenstate, \Gamma_H = (0.588 +/- 0.014 +/- 0.009)/ps.",

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

year = "2012",

month = oct,

day = "9",

doi = "10.1103/PhysRevLett.109.152002",

language = "English",

volume = "109",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society",

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T1 - Measurement of the B̅ s0 Effective Lifetime in the J/ψf0(980) Final State

AU - Playfer, Stephen

AU - The LHCb Collaboration

AU - Needham, Matthew

AU - Muheim, Franz

AU - Clarke, Peter

AU - Xie, Yuehong

AU - Eisenhardt, Stephan

AU - Cowan, Greig

PY - 2012/10/9

Y1 - 2012/10/9

N2 - The effective lifetime of the Bs meson in the decay mode Bs->J/\psi fo(980) is measured using 1.0/fb of data collected in pp collisions at sqrt(s) = 7 TeV with the LHCb detector. The result is 1.700 +/- 0.040 +/- 0.026 ps where the first uncertainty is statistical and the second systematic. As the final state is CP-odd, and CP violation in this mode is measured to be small, the lifetime measurement can be translated into a measurement of the decay width of the heavy Bs mass eigenstate, \Gamma_H = (0.588 +/- 0.014 +/- 0.009)/ps.

AB - The effective lifetime of the Bs meson in the decay mode Bs->J/\psi fo(980) is measured using 1.0/fb of data collected in pp collisions at sqrt(s) = 7 TeV with the LHCb detector. The result is 1.700 +/- 0.040 +/- 0.026 ps where the first uncertainty is statistical and the second systematic. As the final state is CP-odd, and CP violation in this mode is measured to be small, the lifetime measurement can be translated into a measurement of the decay width of the heavy Bs mass eigenstate, \Gamma_H = (0.588 +/- 0.014 +/- 0.009)/ps.

U2 - 10.1103/PhysRevLett.109.152002

DO - 10.1103/PhysRevLett.109.152002

M3 - Article

SN - 0031-9007

VL - 109

JO - Physical Review Letters

JF - Physical Review Letters

IS - 15

M1 - 152002

ER -

Measurement of the B̅ s0 Effective Lifetime in the J/ψf0(980) Final State

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