Measurement of the fraction of Gamma(1S) originating from chi(b)(1P) decays in pp collisions at root s=7 TeV
File(s)
Published version
Author(s)
Type
Journal Article
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 χb(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 < yΥ(1S) < 4.5 is measured to be (20.7 ± 5.7 ±
2.1
+2.7
−5.4
)%, 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.
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 χb(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 < yΥ(1S) < 4.5 is measured to be (20.7 ± 5.7 ±
2.1
+2.7
−5.4
)%, 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.
Date Issued
2012-11-08
Date Acceptance
2012-10-19
Citation
Journal of High Energy Physics, 2012, 2012 (11)
ISSN
1126-6708
Publisher
Springer
Journal / Book Title
Journal of High Energy Physics
Volume
2012
Issue
11
Copyright Statement
Open Access, Copyright CERN,
for the benefit of the LHCb collaboration
for the benefit of the LHCb collaboration
Subjects
Science & Technology
Physical Sciences
Physics, Particles & Fields
Physics
PHYSICS, PARTICLES & FIELDS
Hadron-Hadron Scattering
P(P)OVER-BAR COLLISIONS
MESONS
Publication Status
Published
Article Number
031