Search for<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>c</mml:mi><mml:mo stretchy="false">→</mml:mo><mml:mi>u</mml:mi><mml:msup><mml:mi>l</mml:mi><mml:mo>+</mml:mo></mml:msup><mml:msup><mml:mi>l</mml:mi><mml:mo>−</mml:mo></mml:msup></mml:math>transition in charmed baryon decays

Şirvanlı, Berin Belma

doi:10.1103/physrevd.93.034027

Cited by 7 publications

(10 citation statements)

References 47 publications

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“…On the other hand, the nonresonant branching fractions from Refs. [5,6], which employ the lightcone sum rules, are 2 orders of magnitude lower than our predictions and 3 orders of magnitude lower than the lattice results [7]. Our prediction for the c → pμ + μ − nonresonant branching fraction is about a factor of 15 lower than the lattice QCD result [7].…”

Section: Fig 2 Helicity Form Factors Of the Rare C → P Transitioncontrasting

confidence: 40%

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Rare $$\Lambda _c\rightarrow p \ell ^+\ell ^-$$ Λ c → p ℓ + ℓ -

Фаустов

Galkin

2018

Eur. Phys. J. C

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The relativistic quark model based on the quasipotential approach with the QCD-motivate potential is employed for the calculation of the form factors of the c → p rare weak transitions. Their momentum dependence is explicitly determined without additional assumptions and extrapolations in the whole kinematical range of the momentum transfer squared q 2 . The differential c → pl + l − decay branching fractions and angular distributions are calculated on the basis of these form factors. Both the perturbative and effective Wilson coefficients, which include contributions of vector meson resonances, are used. The calculated branching fraction of the c → pμ + μ − rare decay is well consistent with the experimental upper limit very recently set by the LHCb Collaboration.

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Section: Fig 2 Helicity Form Factors Of the Rare C → P Transitioncontrasting

confidence: 40%

“…The estimates of the corresponding form factors and decay branching fractions in the light cone QCD sum rules are given in Refs. [5,6]. The lattice QCD determination of the c → p form factors and the c → pμ + μ − rare decay observables was recently presented in Ref.…”

Section: Introductionmentioning

confidence: 99%

Rare $$\Lambda _c\rightarrow p \ell ^+\ell ^-$$ Λ c → p ℓ + ℓ -

Фаустов

Galkin

2018

Eur. Phys. J. C

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“…The Wilson coefficients from Ref. [49] actually tend to give higher branching ratios than the Wilson coefficients employed here [38][39][40][41], and the very small branching fractions obtained in [47,48] are puzzling. Note that Refs.…”

Section: Results For Thementioning

confidence: 96%

“…[47,48]. While [47] does not give a reference for the Wilson coefficients, [48] reportedly uses Wilson coefficients from Ref.…”

Section: Results For Thementioning

confidence: 99%

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Λc→N form factors from lattice QCD and phenomenology of Λc→
Meinel
¹

2018
Phys. Rev. D
67
5
59
2
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A lattice QCD determination of the Λ c → N vector, axial vector, and tensor form factors is reported. The calculation was performed with 2 þ 1 flavors of domain-wall fermions at lattice spacings of a ≈ 0.11 and 0.085 fm and pion masses in the range 230 MeV ≲ m π ≲ 350 MeV. The form factors are extrapolated to the continuum limit and the physical pion mass using modified z expansions. The rates of the charged-current decays Λ c → ne þ ν e and Λ c → nμ þ ν μ are predicted to be The phenomenology of the rare charm decay Λ c → pμ þ μ − is also studied. The differential branching fraction, the fraction of longitudinally polarized dimuons, and the forward-backward asymmetry are calculated in the standard model and in an illustrative new-physics scenario.

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Studying B1(12+)→B2(1
Wang
¹
,
Xu
²
,
Hua
³

et al. 2021
Phys. Rev. D
7
0
3
0
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Motivated by recent anomalies in flavor changing neutral current b → sℓ + ℓ − transitions, we study B1 → B2ℓ + ℓ − (ℓ = e, µ, τ ) semileptonic weak decays with the SU(3) flavor symmetry, where B1,2 are the spin-1 2 baryons of single bottomed antitriplet T b3 , single charmed antitriplet Tc3, or light baryons octet T8. Using the SU(3) irreducible representation approach, we first obtain the amplitude relations among different decay modes and then predict the relevant not-yet measured observables of T b3 → T8ℓ + ℓ − , Tc3 → T8ℓ + ℓ − , and T8 → T ′ 8 ℓ + ℓ − decays. (a) We calculate the branching ratios of the T b3 → T8µ + µ − and T b3 → T8τ + τ − decay modes in the whole q 2 region and in the different q 2 bins by the measurement of Λ 0 b → Λ 0 µ + µ − . Many of them are obtained for the first time. In addition, the longitudinal polarization fractions and the leptonic forward-backward asymmetries of all T b3 → T8ℓ + ℓ − decays are very similar to each other in certain q 2 bins due to the SU( 3) flavor symmetry. (b) We analyze the upper limits of B(Tc3 → T8ℓ + ℓ − ) by using the experimental upper limits of B(Λ + c → pµ + µ − ) and B(Λ + c → pe + e − ), and find the experimental upper limit of B(Λ + c → pµ + µ − ) giving the effective bounds on the relevant SU(3) flavor symmetry parameters. The predictions of B(Ξ 0 c → Ξ 0 e + e − ) and B(Ξ 0 c → Ξ 0 µ + µ − ) will be different between the single-quark transition dominant contributions and the W -exchange dominant ones. (c) As for T8 → T ′ 8 ℓ + ℓ − decays, we analyze the single-quark transition contributions and the W -exchange contributions by using the two experimental measurements of B(Ξ 0 → Λ 0 e + e − ) and B(Σ + → pµ + µ − ), and give the branching ratio predictions by assuming either single-quark transition dominant contributions or the W -exchange dominant contributions. According to our predictions, some observables are accessible to the experiments at BESIII, LHCb and Belle-II. −0.21 2.7 ± 2.7 0.04 +0.18 −0.02 0.47 +0.31 −0.27 0.50 +0.26 −0.240.5 ± 0.7 2.2 ± 0.6 1.7 ± 0.5 7.0 ± 2.9 2.44 ± 0.57 6.0 ± 1.3+0.42 −0.41 0.41 +0.43 −0.31 3.91 +4.00 −3.85 0.058 +0.270 −0.030 0.68 +0.47 −0.40 0.73 +0.40 −0.36 0.73 +1.06 −1.02 3.21 +0.97 −0.92 2.47 +0.80 −0.77 10.18 +4.53 −4.35 3.23 +0.85 −0.81 8.46 +2.12 −2.01 B(Ξ 0 b → Ξ 0 µ + µ − ) S 2 1.14 +0.49 −0.46 0.45 +0.48 −0.34 4.39 +4.58 −4.32 0.065 +0.302 −0.033 0.76 +0.54 −0.45 0.81 +0.45 −0.39 0.81 +1.20 −0.81 3.60 +1.14 −1.06 2.83 +0.91 −0.89 11.46 +5.29 −4.96 3.82 +1.01 −1.03 9.81 +2.45 −2.55 B(Ξ − b → Ξ − µ + µ − ) S 1 1.09 +0.46 −0.43 0.43 +0.45 −0.32 4.15 +4.28 −4.08 0.062 +0.289 −0.032 0.72 +0.51 −0.42 0.77 +0.43 −0.38 0.77 +1.13 −1.09 3.40 +1.04 −0.99 2.62 +0.86 −0.82 10.80 +4.89 −4.65 3.40 +0.91 −0.87 8.94 +2.30

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Search forc→ul+l−transition in charmed baryon decays

Cited by 7 publications

References 47 publications

Rare $$\Lambda _c\rightarrow p \ell ^+\ell ^-$$ Λ c → p ℓ + ℓ -

Rare $$\Lambda _c\rightarrow p \ell ^+\ell ^-$$ Λ c → p ℓ + ℓ -

Λc→N form factors from lattice QCD and phenomenology of Λc→
Meinel
¹

2018
Phys. Rev. D
67
5
59
2
View full text Add to dashboard Cite

Studying B1(12+)→B2(1
Wang
¹
,
Xu
²
,
Hua
³

et al. 2021
Phys. Rev. D
7
0
3
0
View full text Add to dashboard Cite

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Search forc→ul+l−transition in charmed baryon decays

Cited by 7 publications

References 47 publications

Rare $$\Lambda _c\rightarrow p \ell ^+\ell ^-$$ Λ c → p ℓ + ℓ -

Rare $$\Lambda _c\rightarrow p \ell ^+\ell ^-$$ Λ c → p ℓ + ℓ -

Λc→N form factors from lattice QCD and phenomenology of Λc→Meinel1 2018Phys. Rev. D675592View full textAdd to dashboardCite

Studying B1(12+)→B2(1Wang1, Xu2, Hua3 et al. 2021Phys. Rev. D7030View full textAdd to dashboardCite

Contact Info

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About

Λc→N form factors from lattice QCD and phenomenology of Λc→
Meinel
¹

2018
Phys. Rev. D
67
5
59
2
View full text Add to dashboard Cite

Studying B1(12+)→B2(1
Wang
¹
,
Xu
²
,
Hua
³

et al. 2021
Phys. Rev. D
7
0
3
0
View full text Add to dashboard Cite