B → J / ψ K ( 1270 ) and B → J / ψ K ( 1400 ) Decays in QCD Factorization Approach
The hadronic B → J / ψ K ( 1270 ) and B →...
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| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2012-01-01
|
| Series: | Advances in High Energy Physics |
| Online Access: | http://dx.doi.org/10.1155/2012/494031 |
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| Summary: | The hadronic
B
→
J
/
ψ
K
(
1270
)
and
B
→
J
/
ψ
K
(
1400
)
has been analyzed in “QCD factorization” approach and generalized factorization. The effective coefficients
a
i
h
have been calculated for three helicity states
h
=
0
,
+
,
−
which give three different contribution of amplitudes. We consider that J/ψ behaves as a light meson in compared to
B
meson. For
B
+
→
J
/
ψ
K
+
(
1270
)
and
B
+
→
J
/
ψ
K
+
(
1400
)
, experimental data of branching ratios are (1.8 ± 0.5) × 10−3 and <5 × 10−4, respectively. Our best obtained results are (1.79 ± 0.01) × 10−3 at θ = 58° and (1.42 ± 0.01) × 10−3 at θ = 32° for
B
+
→
J
/
ψ
K
+
(
1270
)
decay. And we have 4.27 × 10−4 at θ = 58° and 3.45 × 10−4 at θ = 32° for
B
+
→
J
/
ψ
K
+
(
1400
)
, which are in agreement with experiment. |
|---|---|
| ISSN: | 1687-7357 1687-7365 |