Author:
Alok Ashutosh Kumar,Dighe Amol,Gangal Shireen,Kumar Dinesh
Abstract
Abstract
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
$$ {\mathcal{O}}_{\mathcal{9}},{\mathcal{O}}_{10},{\mathcal{O}}_9^{\prime },{\mathcal{O}}_{10}^{\prime } $$
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,
$$ {\mathcal{O}}_9^{\mathrm{NP}},{\mathcal{O}}_{10}^{\mathrm{NP}},{\mathcal{O}}_9^{\prime },{\mathcal{O}}_{10}^{\prime } $$
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
$$ \left({\mathcal{O}}_9^{\mathrm{NP}},{\mathcal{O}}_9^{\prime}\right) $$
O
9
N
P
O
9
′
or
$$ \left({\mathcal{O}}_9^{\mathrm{NP}},{\mathcal{O}}_{10}^{\prime}\right) $$
O
9
N
P
O
10
′
pair remain the most favored ones. On the other hand, though the competing scenario
$$ \left({\mathcal{O}}_9^{\mathrm{NP}},{\mathcal{O}}_{10}^{\mathrm{NP}}\right) $$
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 Science and Business Media LLC
Subject
Nuclear and High Energy Physics
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+ → K
+
ℓ
+
ℓ
−
decays, Phys. Rev. Lett.
113 (2014) 151601 [arXiv:1406.6482] [INSPIRE].
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