Measurement of the [bar over B[superscript 0]] - B[superscript 0] and [bar over B [0 over s]] - B[0 over s] production asymmetries in pp collisions at √s = 7 TeV
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Collaboration-2014-Measurement of the B.pdf
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Author(s)
Counts, Ian Thomas Hunt
Ilten, Philip J
Williams, Michael
Date Issued
October 2014
Journal
Physics Letters B
Publisher
Elsevier
Citation
R. Aaij, et al. “Measurement of the [bar over B[superscript 0]] - B[superscript 0] and [bar over B [0 over s]] - B[0 over s] Production Asymmetries in Pp Collisions at √s = 7 TeV.” Physics Letters B 739 (December 2014): 218–228.
Version
Final published version
Abstract
The [bar over B[superscript 0]] - B[superscript 0] and [bar over B [0 over s]] - B[0 over s] production asymmetries, A[subscript P](B[superscript 0]) and A[subscript P](B[0 over s]), are measured by means of a time-dependent analysis of B[superscript 0] → [J over ψK*[superscript 0]], B[superscript 0] → D[superscript −] π[superscript +] B[0 over s] → D[superscript -][subscript s] π[superscript +] decays, using a data sample corresponding to an integrated luminosity of 1.0 fb[superscript −1], collected by LHCb in pp collisions at a centre-of-mass energy of 7 TeV. The measurements are performed as a function of transverse momentum and pseudorapidity of the B[superscript 0] and B[0 over s] mesons within the LHCb acceptance. The production asymmetries, integrated over p[subscript T] and η in the range 4 < p[subscript T] < 30 [GeV over c] and 2.5 < η < 4.5, are determined to be A[subscript P](B[superscript 0]) = (−0.35 ± 0.76 ± 0.28)% and A[subscript p](B[0 over s]) = (1.09 ± 2.61 ± 0.66)%, where the first uncertainties are statistical and the second systematic.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1016/j.physletb.2014.10.005
