Measurement of the shape of the Lambda(0)(b) ->+ Lambda(+)(c) mu(-)(nu)over-bar mu differential decay rate
File(s)
Published version
OA Location
Author(s)
Type
Journal Article
Abstract
A measurement of the shape of the differential decay rate and the associated Isgur-Wise function for the decay
Λ
0
b
→
Λ
+
c
μ
−
¯
ν
μ
is reported, using data corresponding to
3
fb
−
1
collected with the LHCb detector in proton-proton collisions. The
Λ
+
c
μ
−
¯
ν
μ
(
+
anything
)
final states are reconstructed through the detection of a muon and a
Λ
+
c
baryon decaying into
p
K
−
π
+
, and the decays
Λ
0
b
→
Λ
+
c
π
+
π
−
μ
−
¯
ν
μ
are used to determine contributions from
Λ
0
b
→
Λ
*
+
c
μ
−
¯
ν
μ
decays. The measured dependence of the differential decay rate upon the squared four-momentum transfer between the heavy baryons,
q
2
, is compared with expectations from heavy-quark effective theory and from unquenched lattice QCD predictions.
Λ
0
b
→
Λ
+
c
μ
−
¯
ν
μ
is reported, using data corresponding to
3
fb
−
1
collected with the LHCb detector in proton-proton collisions. The
Λ
+
c
μ
−
¯
ν
μ
(
+
anything
)
final states are reconstructed through the detection of a muon and a
Λ
+
c
baryon decaying into
p
K
−
π
+
, and the decays
Λ
0
b
→
Λ
+
c
π
+
π
−
μ
−
¯
ν
μ
are used to determine contributions from
Λ
0
b
→
Λ
*
+
c
μ
−
¯
ν
μ
decays. The measured dependence of the differential decay rate upon the squared four-momentum transfer between the heavy baryons,
q
2
, is compared with expectations from heavy-quark effective theory and from unquenched lattice QCD predictions.
Date Issued
2017-12-13
Date Acceptance
2017-11-17
Citation
Physical Review D - Particles, Fields, Gravitation and Cosmology, 2017, 96 (11)
ISSN
1550-2368
Publisher
American Physical Society
Journal / Book Title
Physical Review D - Particles, Fields, Gravitation and Cosmology
Volume
96
Issue
11
Copyright Statement
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
License URL
Subjects
Science & Technology
Physical Sciences
Astronomy & Astrophysics
Physics, Particles & Fields
Physics
2ND-ORDER POWER CORRECTIONS
QUARK EFFECTIVE THEORY
ISGUR-WISE FUNCTION
FORM-FACTORS
BARYONS
MESONS
Publication Status
Published
Article Number
112005