2012
DOI: 10.1007/jhep10(2012)118
|View full text |Cite
|
Sign up to set email alerts
|

Comparative analysis of the semileptonic Λ b → Λℓ+ℓ− transition in SM and different SUSY scenarios using form factors from full QCD

Abstract: We work out the semileptonic Λ b → Λℓ + ℓ − transition in standard as well as different supersymmetric models. In particular, considering the parametrization of the matrix elements entered the low energy effective Hamiltonian in terms of form factors in full QCD, we calculate the amplitude and differential decay rate responsible for this decay channel in supersymmetric models. We then use the form factors calculated via light cone QCD sum rules in full theory to analyze the differential branching ratio and lep… Show more

Help me understand this report
View preprint versions

Search citation statements

Order By: Relevance

Paper Sections

Select...
1
1
1

Citation Types

1
3
0

Year Published

2014
2014
2023
2023

Publication Types

Select...
6

Relationship

0
6

Authors

Journals

citations
Cited by 6 publications
(4 citation statements)
references
References 10 publications
1
3
0
Order By: Relevance
“…The second term of is introduced to avoid infrared divergence at the point , and μ is a small parameter to avoid the divergence in numerical calculations. Analyzing the electromagnetic FFs of the proton, GeV was observed to provide consistent results with the experimental data [40].…”
Section: Theoretical Formalismsupporting
confidence: 60%
“…The second term of is introduced to avoid infrared divergence at the point , and μ is a small parameter to avoid the divergence in numerical calculations. Analyzing the electromagnetic FFs of the proton, GeV was observed to provide consistent results with the experimental data [40].…”
Section: Theoretical Formalismsupporting
confidence: 60%
“…9,10) are the Wilson coefficients, C ef f −0.313, C ef f .334, C 10 = −4.669[50][51][52]. The amplitude is obtained by sandwiching the effective Hamiltonian between the initial and final states.…”
mentioning
confidence: 99%
“…Using all given input values, we find the value of branching ratio of the Σ Σγ → b decay mode in table 4. We also compare the obtained result with that of the Λ Λγ → b channel calculated in [11] in the same table. As seen from this table, the branching ratio of the Σ Σγ → b channel is roughly one order of magnitude smaller than that of the Λ Λγ → b process.…”
Section: Decay Width and Branching Ratiomentioning
confidence: 79%
“…One of methods of searching for EDs is to study their indirect effects on parameters related to the decays of heavy hadrons. In this connection, we extend our previous work on the Λ Λγ → b transition [11] to study the radiative baryonic decay of Σ Σγ → b in both SM and UED models with one or two universal extra dimensions. Considering the experimental progress on the Λ b baryon decays reported by the CDF [12] and LHCb [13] Collaborations, we hope it will also be possible to study the decay channels of Σ b baryons in the near future.…”
Section: Introductionmentioning
confidence: 74%