Measurement of b-hadron masses

The LHCb Collaboration

doi:10.1016/j.physletb.2012.01.058

Measurement of b-hadron masses

The LHCb Collaboration

School of Physics and Astronomy

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

Abstract

Measurements of b−hadron masses are performed with the exclusive decay modes B+→J/ψK+, B0→J/ψ K∗0, B0→J/ψK0S, B0s→J/ψϕ and Λb→J/ψΛ using an integrated luminosity of 35 pb−1 collected in pp collisions at a centre-of-mass energy of 7 TeV by the LHCb experiment. The momentum scale is calibrated with J/ψ→μ+μ− decays and verified to be known to a relative precision of 2×10−4 using other two-body decays. The results are more precise than previous measurements, particularly in the case of the B0s and Λ0b masses.

Original language	English
Pages (from-to)	241-248
Number of pages	8
Journal	Physics Letters B
Volume	708
Issue number	3-5
DOIs	https://doi.org/10.1016/j.physletb.2012.01.058
Publication status	Published - 10 Feb 2012

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10.1016/j.physletb.2012.01.058

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title = "Measurement of b-hadron masses",

abstract = "Measurements of b−hadron masses are performed with the exclusive decay modes B+→J/ψK+, B0→J/ψ K∗0, B0→J/ψK0S, B0s→J/ψϕ and Λb→J/ψΛ using an integrated luminosity of 35 pb−1 collected in pp collisions at a centre-of-mass energy of 7 TeV by the LHCb experiment. The momentum scale is calibrated with J/ψ→μ+μ− decays and verified to be known to a relative precision of 2×10−4 using other two-body decays. The results are more precise than previous measurements, particularly in the case of the B0s and Λ0b masses. ",

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

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T1 - Measurement of b-hadron masses

AU - The LHCb Collaboration

AU - Aaij, R.

AU - Playfer, Stephen

AU - Needham, Matthew

AU - Muheim, Franz

AU - Clarke, Peter

AU - Xie, Yuehong

AU - Eisenhardt, Stephan

N1 - Long author list - awaiting processing

PY - 2012/2/10

Y1 - 2012/2/10

N2 - Measurements of b−hadron masses are performed with the exclusive decay modes B+→J/ψK+, B0→J/ψ K∗0, B0→J/ψK0S, B0s→J/ψϕ and Λb→J/ψΛ using an integrated luminosity of 35 pb−1 collected in pp collisions at a centre-of-mass energy of 7 TeV by the LHCb experiment. The momentum scale is calibrated with J/ψ→μ+μ− decays and verified to be known to a relative precision of 2×10−4 using other two-body decays. The results are more precise than previous measurements, particularly in the case of the B0s and Λ0b masses.

AB - Measurements of b−hadron masses are performed with the exclusive decay modes B+→J/ψK+, B0→J/ψ K∗0, B0→J/ψK0S, B0s→J/ψϕ and Λb→J/ψΛ using an integrated luminosity of 35 pb−1 collected in pp collisions at a centre-of-mass energy of 7 TeV by the LHCb experiment. The momentum scale is calibrated with J/ψ→μ+μ− decays and verified to be known to a relative precision of 2×10−4 using other two-body decays. The results are more precise than previous measurements, particularly in the case of the B0s and Λ0b masses.

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DO - 10.1016/j.physletb.2012.01.058

M3 - Article

SN - 1873-2445

VL - 708

SP - 241

EP - 248

JO - Physics Letters B

JF - Physics Letters B

IS - 3-5

ER -

Measurement of b-hadron masses

Abstract

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