Zobrazeno 1 - 10
of 55
pro vyhledávání: '"Singh, Janardan P."'
Autor:
Singh, Janardan Prasad
We have calculated coupling constants of a neutral pion with the lowest two nucleon resonances. This includes both the diagonal as well as non-diagonal coupling constants involving a nucleon resonance and a nucleon. For this, we first calculate vacuu
Externí odkaz:
http://arxiv.org/abs/2104.12371
Akademický článek
Tento výsledek nelze pro nepřihlášené uživatele zobrazit.
K zobrazení výsledku je třeba se přihlásit.
K zobrazení výsledku je třeba se přihlásit.
Autor:
Singh, Janardan P., Patel, Shesha D.
Coupling constants of $\eta$ and $\eta^{\prime}$ mesons with nucleons have been calculated using the method of QCD sum rules. Starting from vacuum-to-meson correlation function of interpolating fields of two nucleons, its matrix element with respect
Externí odkaz:
http://arxiv.org/abs/1812.06275
Autor:
Singh, Janardan P., Patel, Shesha D.
Using collinear factorization, we have calculated twist-six corrections to $\eta\gamma$ and $\eta^{\prime}\gamma$ transition form factors in QCD. Only a sub-set of light-cone operators of twist-six which can be factorized as a product of two gauge in
Externí odkaz:
http://arxiv.org/abs/1810.08497
Autor:
Singh, Janardan P.
We have analyzed axial-vector current-current correlation functions between one-nucleon states to calculate the singlet axial-vector coupling constant of the nucleon. The octet-octet and the octet-singlet current correlators, investigated in this wor
Externí odkaz:
http://arxiv.org/abs/1507.05289
Autor:
Singh, Janardan Prasad
Matrix elements of flavor-diagonal light quark pseudoscalar densities and axial anomaly operators between vacuum and {\eta} and {\eta}' meson states have been determined. This has been done by evaluating current-current correlators of octet-octet and
Externí odkaz:
http://arxiv.org/abs/1307.3311
Autor:
Singh, Janardan P., Deshpande, N. G.
Publikováno v:
J. Phys. G: Nucl. Part. Phys. 41 (2014) 055010
We have performed a numerical analysis of branching ratios and direct CP-asymmetries of B meson decays to two light pseudoscalar nonets with deltaS=1 using QCD improved factorization. The parameters related to B meson including its semileptonic form
Externí odkaz:
http://arxiv.org/abs/1306.3279
Publikováno v:
Cereal Research Communications; September 2024, Vol. 52 Issue: 3 p1187-1199, 13p
Autor:
Singh, Janardan P., Patel, Aditya B.
Using QCD sum rule, we calculate valance quark distribution functions of {\eta} and of {\eta}' in chiral limit. Extrapolating the calculated quark distribution functions at both end regions, their first two moments have been calculated and compared w
Externí odkaz:
http://arxiv.org/abs/1111.2128
Publikováno v:
Int.J.Mod.Phys.A26:947-963,2011
We study the $\eta$NN coupling constant using the method of QCD sum rules starting from the vacuum-to-eta correlation function of the interpolating fields of two nucleons. The matrix element of this correlation has been taken with respect to nucleon
Externí odkaz:
http://arxiv.org/abs/1006.1127