Evidence for the two-body charmless baryonic decay B[superscript +] →p[bar over Λ]
Name
JHEP04(2017)162.pdf
Size
549.16 KB
Format
Adobe PDF
Checksum (MD5)
c4ef9b9707d6eb79f81c79f2a0403757
Author(s)
Boettcher, Thomas Julian
Ilten, Philip J
Date Issued
April 2017
Journal
Journal of High Energy Physics
Publisher
Springer Berlin Heidelberg
Citation
The LHCb collaboration, et al. “Evidence for the Two-Body Charmless Baryonic Decay B[superscript +] → p[bar over Λ].” Journal of High Energy Physics, vol. 2017, no. 4, Apr. 2017. © 2017 The Authors
Version
Final published version
Abstract
A search for the rare two-body charmless baryonic decay B[superscript +] → p[bar over Λ] is performed with pp collision data, corresponding to an integrated luminosity of 3 fb [superscript −1], collected by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. An excess of B[superscript +] →p[bar overΛ] candidates with respect to background expectations is seen with a statistical significance of 4.1 standard deviations, and constitutes the first evidence for this decay. The branching fraction, measured using the B[superscript +] →K[subscript S[superscript 0]]π[superscript +] decay for normalisation, B(B[superscript +] → p[bar over Λ]) = (2.4[superscript +1.0][subscript −0.8] ± 0.3) × 10[superscript −7], where the first uncertainty is statistical and the second systematic. Keywords: B physics, Branching fraction, Flavor physics, Hadron-Hadron scattering
(experiments)
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 4.0 International License
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1007/JHEP04(2017)162
