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Continuing search for new physics in b → sμμ decays: two operators at a time
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Journal Article
Continuing search for new physics in b → sμμ decays: two operators at a time
2019
Overview
A
bstract
The anomalies in the measurements of observables involving
b
→
sμμ
decays, namely
R
K
,
R
K
*
,
P
5
′
, and
B
s
ϕ
, may be addressed by adding lepton-universality-violating new physics contributions to the effective operators
O
9
,
O
10
,
O
9
′
,
O
10
′
. We analyze all the scenarios where the new physics contributes to a pair of these operators at a time. We perform a global fit to all relevant data in the
b
→
s
sector to estimate the corresponding new Wilson coefficients,
O
9
N
P
,
O
10
N
P
,
O
9
′
,
O
10
′
. In the light of the new data on
R
K
, and
R
K
*
, presented in Moriond 2019, we find that the scenarios with new physics contributions to the
O
9
N
P
O
9
′
or
O
9
N
P
O
10
′
pair remain the most favored ones. On the other hand, though the competing scenario
O
9
N
P
O
10
N
P
remains attractive, its advantage above the SM reduces significantly due to the tension that emerges between the
R
K
and
R
K
*
measurements with the new data. The movement of the
R
K
measurement towards unity would also result in the re-emergence of the one-parameter scenario
C
9
NP
= −
C
9
′
.
Publisher
Springer Berlin Heidelberg,Springer Nature B.V,SpringerOpen
