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Now showing items 1-10 of 15

#### Strong ΛbNB and ΛcND vertices

(American Physical Society, 2014-12-04)

We investigate the strong vertices among the Lambda(b), nucleon, and B meson as well as the Lambda(c), nucleon, and D meson in QCD. In particular, we calculate the strong coupling constants g Lambda bNB and g Lambda cND ...

#### Investigation of the D (s) (*) D-s eta ((')) and B (s) (*) B-s eta ((')) vertices via QCD sum rules

(Springer, 2013-10-14)

The strong-coupling constants among mesons are very important quantities as they can provide useful information on the nature of strong interaction among hadrons as well as the QCD vacuum. In this article, we investigate ...

#### gD(s)*DK*(892) and gB(s)*BK*(892) coupling constants in QCD sum rules

(IOP Publishing, 2011-04)

The coupling constants gD*(s) DK*(892) and gB*sBK*(892) are calculated in the framework of three-point QCD sum rules. The correlation functions responsible for these coupling constants are evaluated considering contributions ...

#### Scalar quarkonia at finite temperature

(American Physical Society, 2010-09-28)

Masses and decay constants of the scalar quarkonia, chi(Q0)(Q = b, c) with quantum numbers I-G (J(PC)) = 0(+)(0(++)), are calculated in the framework of the QCD sum rules approach both in vacuum and finite temperature. The ...

#### Semileptonic b -> (d)over-bar transition in a nuclear medium

(American Physical Society, 2015-02-24)

We study the semileptonic tree-level B -> (D) over bar transition in the framework of QCD sum rules in a nuclear medium. In particular, we calculate the in-medium form factors entering the transition matrix elements defining ...

#### Charmed partner of the exotic X(5568) state and its properties

(American Physical Society, 2016-05-06)

The mass, decay constant, and width of a hypothetical charmed partner X-c of the newly observed exotic X-b(5568) state are calculated using the technique of the QCD sum rule method. The X-c = [su][(c) over bar(d) over bar] ...

#### Mass and decay constant of the newly observed exotic X(5568) state

(American Physical Society, 2016-04-20)

The mass and decay constant of the X(5568) state newly observed by the D0 Collaboration are computed within the two-point sum rule method using the diquark-antidiquark interpolating current. In calculations, the vacuum ...

#### Scalar and vector self-energies of heavy baryons in nuclear medium

(Elsevier, 2017-04)

The in-medium sum rules are employed to calculate the shifts in the mass and residue as well as the calar and vector self-energies of the heavy Lambda(Q), Sigma(Q) and Xi(Q) baryons, with Q being b or c quark. The maximum ...

#### On the nature of the newly discovered omega states

(EPL Association, 2017-06)

The mass and residue of the ground-state, as well as the first orbital and radial excitations of the heavy Omega(Q) baryons with Q being b or c quark, for both J = 1/2 and J = 3/2 are calculated by means of the QCD two-point ...

#### Resonance X(5568) as an exotic axial-vector state

(Springer, 2017-01-23)

The mass and meson-current coupling constant of the resonance X(5568), as well as the width of the decay X(5568) -> B-s*pi are calculated by modeling the exotic X(5568) resonance as a diquark-antidiquark state X- b = ...