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

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 of both D(B) and K*(892) mesons as off-shell states, but in the absence of radiative corrections. The results gD*sDK*(892) = (3.74 +/- 1.38) GeV-1 and gB*sBK*(892) = (3.24 +/- 1.08) GeV-1 are obtained for the considered strong coupling constants

Systematic analysis of the B-s -> f(0)l(+)l(-) in the universal extra dimension

Using form factors enrolled to the transition matrix elements and calculated via light-cone QCD sum rules including next-to-leading order corrections in the strong coupling constant, we provide a systematic analysis of the Bs -> f(0)(980)l(+)l(-) both in the standard and universal extra dimension models. In particular, we discuss sensitivity of the differential branching ratio and various double lepton polarization asymmetries on the compactification factor of extra dimension and show how the results of the extra dimension model deviate from the standard model predictions. The order of branching ratio makes this decay mode possible to be checked at LHCb in near future

Forward-backward asymmetry, branching ratio and rate difference between electron and muon channels of B -> K-1(K*)l(+)l(-) transition in supersymmetric models

The mass eigen states K-1(1270) and K-1(1400) are mixture of the strange members of two axial-vector SU(3) octet, P-3(1)(K-1(A)) and P-1(1)(K-1(B)). Taking into account this mixture, the forward-backward asymmetry(A(FB)), branching ratio(Br) and rate difference of electron channel to muon channel(R) of B --> K-1(1270, 1400)l(+)l(-) transitions are studied in the framework of different supersymmetric models. MSSM with R parity is considered because considerable deviation from the standard model predictions can be obtained in B -- >X(s)l(-)l(+). Taking C-Q1 and C-Q2 about one which is consistent with the B --> K*mu(+)mu(-) rate at low dileptonic invariant mass region(1 <= q(2) <= 6GeV(2)), we obtain a size able deviation for A(FB), Br and R with respect to the Standard Model results. Any measurement of physical observables and their comparison with the results obtained in this paper can gives useful information about the nature of interactions beyond the standard model

A socio-economic problem regarding poplar plantation and a problem solving model by AHP

The current research presents the best solution for socio-economic problem regarding poplar plantation in Eastern and Western Azerbaijan, Iran. Planting fast growing species such as poplar is highly profitable in wood farming in Eastern and Western Azerbaijan, hence identification of socio-economic qualifications of poplar plantation would solve the problems of wood and paper industries regarding wood supply in the coming decade. Assuming previous researches and visiting poplar plantation surfaces in the so-called provinces, 51 sub-criteria were identified. These sub-criteria were categorized in five major groups: application, economic and financial, social and cultural, technical, and infrastructure. The priority and weight of the criteria and sub-criteria were determined through survey the experts and poplar farmers in wood and paper industries and poplar plantation. The findings revealed that economic and financial aspects are the most important criteria, and the sub-criteria of pre-purchase contract, water sources, and improved species have the highest priorities, respectively. For selecting the best optimized solution in the provinces, three groups of alternatives were selected: poplar farmer promotion and education using national and foreign experts, offering multiple facilities, and increasing the participation of wood and paper industries and investors with respect to poplar farmers’ problems. To select the best solution, a questionnaire was designed and administered among the experts, and then evaluated considering the sub-criteria. The results of synthesizing by AHP and Expert Choice software indicated that polar farmer promotion and education through national and foreign experts’ contribution is the best solution for providing proper situation of poplar plantation in the area and consumption of wood and paper industries. The result of sensitivity analysis indicated that economic & financial, technical and structural criteria are more sensitive when affect the solutions

g DsDK*0 and g BsDK*0 coupling constants in QCD sum rules

Azizi, Kazem (Dogus Author) -- This paper was firstly submitted to 3rd International Conference on Hadron Physics.In the present study, we calculate the strong coupling constants g DsDK* 0(800) and g BsDK* 0(800) within the three-point QCD sum rules approach. We evaluate the correlation function of the considered vertices taking into account both D[B] and K* 0(800) mesons as off-shell states.Ozyegin University, Middle East Technical University, Canakkale Onsekiz Mart University, HadronPhysics2 Consortiu

In-medium properties of b and d mesons

Conference: International Workshop on Quantum Chromodynamics - Theory and Experiment -- Location: Bari, ITALY -- Date: JUN 16-19, 2014.The shifts in the masses and decay constants of B and D mesons in nuclear medium are calculated in the frame work of QCD sum rules. The results obtained are compared with the existing theoretical predictions.Ist Nazl Fisica Nucleare; Natl Ist Nazl Fisica Nucleare Theory Comm; Salento Univ, Dipartimento Matematica Fisica E Giorgi; Lecce Ist Nazl Fisica Nucleare Theory Gr

Investigation of the D*s2(2573)+D+K0 vertex via QCD sum rules

Azizi, Kazem (Dogus Author) -- Conference full title: 4th International Conference on Hadron Physics, TROIA 2014; Canakkale; Turkey; 1 July 2014 through 5 July 2014In this work the D∗s2(2573)+D+K0 vertex is studied and the coupling constant corresponding to the D∗s2(2573)+ D+K0 transition is calculated. The calculation is performed using three point QCD sum rules method and the value of the coupling constant is obtained as gD∗s2DK (12.85 ± 3.85) GeV-1. The coupling constant is also used to calculate the decay width and the branching ratio of the considered transition

Properties of bound states containing fourth family quarks

Azizi, Kazem (Dogus Author) -- 2nd International Conference on Particle PhysicsThe heavy fourth generation of quarks that have sufficiently small mixing with the three known SM families form hadrons. In the present work, we calculate the masses and decay constants of mesons containing either both quarks from the fourth generation or one from fourth family and the other from observed SM quarks, namely charm or bottom quark, in the framework of the QCD sum rules. In the calculations, the two gluon condensate diagrams as nonperturbative contributions are taken into account. The obtained numerical results are reduced to the known masses and decay constants of the b̄b and c̄c quarkonia, when the fourth family quark is replaced by the bottom or charm quark

A comparative study on B -> K*l(+)l(-) and B -> K-0*(1430)l(+)l(-) decays in the supersymmetric models

In this paper, we compare the branching ratio and rate difference of electron channel to muon channel of B -> K-0*(1430)l(+)l(-) and B -> K*l(+)l(-) decays, where K-0*(1430) is the p-wave scalar meson, in the supersymmetric models. MSSM with R parity is considered since considerable deviation from the standard model predictions can be obtained in B -> X(s)l(-)l(+). Taking C-Q1 and C-Q2 about one which is consistent with the B -> K* mu(+)mu(-) rate at low dileptonic invariant mass region (1 K-0*(1430)l(+)l(-) (l-mu,tau) decay is measurable at LIIC, secondly, in comparison with B -> K*l(+)l(-) decay a greater deviation in the B -> K-0*(1430)l(+)l(-) decay can be seen. Measurement of these observables for the semileptonic rare B -> K-0*(1430)l(+)l(-), in particular, at low q(2) region can give valuable information about the nature of interactions within Standard Model or beyond