Observation of the suppressed decay Λ0 b → pπ−μ+μ−
Author(s)
The LHCb Collaboration; Boettcher, Thomas Julian; Ilten, Philip J; Williams, M.
DownloadAaij2017_Article_ObservationOfTheSuppressedDeca.pdf (666.0Kb)
Terms of use
Metadata
Show full item recordAbstract
© 2017, The Author(s). The suppressed decay Λb0→ pπ−μ+μ−, excluding the J/ψ and ψ(2S) → μ+μ−resonances, is observed for the first time with a significance of 5.5 standard deviations. The analysis is performed with proton-proton collision data corresponding to an integrated luminosity of 3 fb−1collected with the LHCb experiment. The Λb0→ pπ−μ+μ−branching fraction is measured relative to the Λb0→ J/ψ(→μ+μ−)pπ−branching fraction givingℬ(Λb0→pπ−μ+μ−)ℬ(Λb0→J/ψ(→μ+μ−)pπ−)=0.044±0.012±0.007, where the first uncertainty is statistical and the second is systematic. This is the first observation of a b → d transition in a baryonic decay.[Figure not available: see fulltext.]
Date issued
2017-04Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear ScienceJournal
Journal of High Energy Physics
Citation
Aaij, R., B. Adeva, M. Adinolfi, Z. Ajaltouni, S. Akar, J. Albrecht, et al. “Observation of the Suppressed Decay Λ
b
0
→ Pπ
−
μ
+
μ
−
.” Journal of High Energy Physics 2017, no. 4 (April 2017). doi:10.1007/jhep04(2017)029.
Version: Final published version
ISSN
1029-8479
Collections
The following license files are associated with this item: