Method for an unbinned measurement of the q(2) dependent decay amplitudes of (B)over-bar(0) -> (K)over-bar*(0)mu(+)mu(-) decays
File(s)
Published version
Published version
Author(s)
Egede, U
Patel, M
Petridis, KA
Type
Journal Article
Abstract
A method for determining the q
2 dependent K¯ ∗0
spin amplitudes of B¯0 →
K¯ ∗0µ
+µ
− decays through a maximum likelihood fit to data is presented. While current
experimental techniques extract a limited set of observables in bins of q
2
, our approach
allows for the determination of all observable quantities as continuous distributions in
q
2
. By doing this, the method eliminates the need to correct theory predictions of these
observables for q
2 averaging effects, thus increasing the sensitivity to the effects of physics
beyond the Standard Model. Accounting for the symmetries of the angular distribution
and using a three parameter ansatz for the q
2 dependence of the amplitudes, the precision
of the angular observables and the sensitivity to new physics is estimated using simulated
events. These studies are based on the sample sizes collected by the LHCb experiment
during Run-I and expected for Run-II.
2 dependent K¯ ∗0
spin amplitudes of B¯0 →
K¯ ∗0µ
+µ
− decays through a maximum likelihood fit to data is presented. While current
experimental techniques extract a limited set of observables in bins of q
2
, our approach
allows for the determination of all observable quantities as continuous distributions in
q
2
. By doing this, the method eliminates the need to correct theory predictions of these
observables for q
2 averaging effects, thus increasing the sensitivity to the effects of physics
beyond the Standard Model. Accounting for the symmetries of the angular distribution
and using a three parameter ansatz for the q
2 dependence of the amplitudes, the precision
of the angular observables and the sensitivity to new physics is estimated using simulated
events. These studies are based on the sample sizes collected by the LHCb experiment
during Run-I and expected for Run-II.
Date Issued
2015-06-15
Date Acceptance
2015-05-17
Citation
Journal of High Energy Physics, 2015, 2015 (6)
ISSN
1126-6708
Publisher
Springer
Journal / Book Title
Journal of High Energy Physics
Volume
2015
Issue
6
Copyright Statement
Open Access, © The Authors.
Article funded by SCOAP3
.
Article funded by SCOAP3
.
License URL
Subjects
Science & Technology
Physical Sciences
Physics, Particles & Fields
Physics
Rare decay
Beyond Standard Model
B physics
Flavour Changing Neutral Currents
Hadron-Hadron Scattering
PHYSICS
Publication Status
Published
Article Number
084