Measurement of the shape of the Λ[superscript 0][subscript b] → Λ[superscript +][subscript c]μ[superscript −][bar over ν][subscript μ] differential decay rate
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PhysRevD.96.112005.pdf
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Author(s)
Aaij, R.
Adeva, B.
Adinolfi, M.
Ajaltouni, Z.
Akar, S.
Albrecht, J.
Alessio, F.
Alexander, M.
Alfonso Albero, A.
Ali, S.
Date Issued
December 2017
Journal
Physical Review D
Publisher
American Physical Society
Citation
Aaij, R., et al. “Measurement of the shape of the Λ[superscript 0][subscript b] → Λ[superscript +][subscript c]μ[superscript −][bar over ν][subscript μ] differential decay rate.” Physical Review D, vol. 96, no. 11, Dec. 2017. © 2018 American Physical Society
Version
Final published version
Abstract
A measurement of the shape of the differential decay rate and the associated Isgur-Wise function for the decay Λ[superscript 0][subscript b] → Λ[superscript +][subscript c]μ[superscript −][bar over ν][subscript μ] reported, using data corresponding to 3 fb[superscript -1] collected with the LHCb detector in proton-proton collisions. The Λ[superscript +][subscript c]μ[superscript −][bar over ν][subscript μ](+anything) final states are reconstructed through the detection of a muon and a Λ[superscript +][subscript c] baryon decaying into pK[superscript -]π[superscript +], and the decays Λ[superscript 0][subscript b]→Λ[superscript +][subscript c]π[superscript +]π[superscript -]μ[superscript -][bar vover v][subscript μ] are used to determine contributions from Λ[superscript 0][subscript b] → Λ[superscript +][subscript c]μ[superscript −][bar over ν][subscript μ] decays. The measured dependence of the differential decay rate upon the squared four-momentum transfer between the heavy baryons, q[superscript 2], is compared with expectations from heavy-quark effective theory and from unquenched lattice QCD predictions.
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
http://dx.doi.org/10.1103/PhysRevD.96.112005
