Measurement of the fraction of Υ(1S) originating from χb(1P) decays in pp collisions at s√=7 TeV

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

doi:10.1007/JHEP11(2012)031

Measurement of the fraction of Υ(1S) originating from χb(1P) decays in pp collisions at s√=7 TeV

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 production of χb(1P ) mesons in pp collisions at a centre-of-mass energy of 7 TeV is studied using 32 pb−1 of data collected with the LHCb detector. The χb(1P ) mesons are reconstructed in the decay mode χ b (1P ) → Υ (1S)γ → μ + μ −γ. The fraction of Υ (1S) originating from χb(1P ) decays in the Υ (1S) transverse momentum range 6 < pT Υ (1S) < 15 GeV/c and rapidity range 2.0 < y Υ (1S) < 4.5 is measured to be TeX , where the first uncertainty is statistical, the second is systematic and the last gives the range of the result due to the unknown Υ (1S) and χb(1P) polarizations.

Original language	English
Pages (from-to)	031
Number of pages	1
Journal	Journal of High Energy Physics
Volume	1211
Early online date	3 Sep 2012
DOIs	https://doi.org/10.1007/JHEP11(2012)031
Publication status	Published - Nov 2012

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title = "Measurement of the fraction of Υ(1S) originating from χb(1P) decays in pp collisions at s√=7 TeV",

abstract = "The production of χb(1P ) mesons in pp collisions at a centre-of-mass energy of 7 TeV is studied using 32 pb−1 of data collected with the LHCb detector. The χb(1P ) mesons are reconstructed in the decay mode χ b (1P ) → Υ (1S)γ → μ + μ −γ. The fraction of Υ (1S) originating from χb(1P ) decays in the Υ (1S) transverse momentum range 6 < pT Υ (1S) < 15 GeV/c and rapidity range 2.0 < y Υ (1S) < 4.5 is measured to be TeX , where the first uncertainty is statistical, the second is systematic and the last gives the range of the result due to the unknown Υ (1S) and χb(1P) polarizations.",

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 = "10.1007/JHEP11(2012)031",

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T1 - Measurement of the fraction of Υ(1S) originating from χb(1P) decays in pp collisions at s√=7 TeV

AU - Playfer, Stephen

AU - The LHCb Collaboration

AU - Needham, Matthew

AU - Muheim, Franz

AU - Clarke, Peter

AU - Xie, Yuehong

AU - Eisenhardt, Stephan

PY - 2012/11

Y1 - 2012/11

N2 - The production of χb(1P ) mesons in pp collisions at a centre-of-mass energy of 7 TeV is studied using 32 pb−1 of data collected with the LHCb detector. The χb(1P ) mesons are reconstructed in the decay mode χ b (1P ) → Υ (1S)γ → μ + μ −γ. The fraction of Υ (1S) originating from χb(1P ) decays in the Υ (1S) transverse momentum range 6 < pT Υ (1S) < 15 GeV/c and rapidity range 2.0 < y Υ (1S) < 4.5 is measured to be TeX , where the first uncertainty is statistical, the second is systematic and the last gives the range of the result due to the unknown Υ (1S) and χb(1P) polarizations.

AB - The production of χb(1P ) mesons in pp collisions at a centre-of-mass energy of 7 TeV is studied using 32 pb−1 of data collected with the LHCb detector. The χb(1P ) mesons are reconstructed in the decay mode χ b (1P ) → Υ (1S)γ → μ + μ −γ. The fraction of Υ (1S) originating from χb(1P ) decays in the Υ (1S) transverse momentum range 6 < pT Υ (1S) < 15 GeV/c and rapidity range 2.0 < y Υ (1S) < 4.5 is measured to be TeX , where the first uncertainty is statistical, the second is systematic and the last gives the range of the result due to the unknown Υ (1S) and χb(1P) polarizations.

U2 - 10.1007/JHEP11(2012)031

DO - 10.1007/JHEP11(2012)031

M3 - Article

VL - 1211

SP - 031

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1126-6708

ER -

Measurement of the fraction of Υ(1S) originating from χb(1P) decays in pp collisions at s√=7 TeV

Abstract

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