## Search

Now showing items 1-10 of 16

#### Semileptonic Lambda b,c to nucleon transitions in full QCD at light cone

(American Physical Society, 2009-11)

The tree-level semileptonic Lambda(b)-> pl nu and Lambda(c)-> nl nu transitions are investigated using the light cone QCD sum rules approach in full theory. The spin 1/2, Lambda(Q) baryon with Q=b or c, is considered by ...

#### FCNC transitions of Lambda(b,c) to nucleon in SM

(IOP Publishing, 2010-11)

We provide a comprehensive study of semileptonic flavor-changing neutral current transitions for Lambda(b) -> nl(+) l(-) and Lambda(c) -> pl(+) l(-) in the context of light cone QCD sum rules. Using the most general form ...

#### Flavor-changing neutral currents transition of the Sigma(Q) to nucleon in full QCD and heavy quark effective theory

(IOP Publishing, 2010-08)

The loop-level flavor-changing neutral currents transitions of the Sigma(b) -> nl(+)l(-) and Sigma(c) -> pl(+)l(-) are investigated in full QCD and heavy quark effective theory in the light cone QCD sum rules approach. ...

#### Strong D*(2)(2460)(0) -> D+pi(-) transition in QCD

(EDP Sciences, 2014-11-24)

This work presents the analysis of the transition D*(2)(2460)(0) > D+pi(-). In the calculation three point QCD sum rules method is applied and the value of the coupling constant for the considered vertex is obtained as ...

#### Semileptonic bs -> ds2*(2573) l(nu)over-barl transition in QCD

(Springer, 2015-05-06)

We analyze the semileptonic B-s -> D-s2*(2573) l (nu) over bar (l) transition, where l = tau, mu or e, within the standard model. We apply the QCD sum rule approach to calculate the transition form factors entering the low ...

#### Analysis of the Lambda(b) -> Lambda l(+)l(-) transition in the SM4 using form factors from full QCD

(Springer, 2012-05-25)

Using the responsible form factors calculated via full QCD, we analyze the Lambda(b) -> Lambda l(+)l(-) transition in the standard model containing fourth-generation quarks (SM4). We discuss the effects of the presence of ...

#### Analysis of the strong D-2* (2460)(0) -> D+ pi(-) and D-s2*(2573)(+) -> D+ K-0 transitions via QCD sum rules

(Springer, 2014-10-21)

The strong D-2* (2460)(0) -> D+ pi(-) and D-s2* (2573)(+) -> D+ K-0 transitions are analyzed via three-point QCD sum rules. First we calculate the corresponding strong coupling constants g(D2)*D pi and g(Ds2)*DK. Then we ...

#### Application of the QCD light cone sum rule to tetraquarks: The strong vertices XbXb rho and XcXc rho

(American Physical Society, 2016-06-30)

The full version of the QCD light-cone sum rule method is applied to tetraquarks containing a single heavy b or c quark. To this end, investigations of the strong vertices XbXb rho and XcXc rho are performed, where X-b = ...

#### Strong Z(c)(+)(3900) -> J/psi pi(+); eta c rho(+)decays in QCD

(American Physical Society, 2016-04-01)

The widths of the strong decaysZ(c)(+)(3900) -> J/psi pi(+); and Z(c)(+) (3900) -> are calculated. To this end, the mass and decay constant of the exotic Z(c)(+) (3900) state are computed by means of a two -point sum rule. ...

#### Open charm-bottom axial-vector tetraquarks and their properties

(Springer, 2017-05-18)

The charged axial-vector J (P) = 1(+) tetraquarks Z(q) = [cq][ (b) over bar(q) over bar] and Z(s) = [cs][ (b) over ar(s) over bar] with the open charm-bottom contents are studied in the diquark-antidiquark model. The masses ...