Rare B -> K*nu(nu)over-bar decay beyond standard model

Using the most general, model-independent form of effective Hamiltonian, the exclusive, rare B --> K*v (v) over bar decay is analyzed. The sensitivity of the branching ratio and missing mass-squared spectrum of the B --> K*v (v) over bar decay, when K* is polarized longitudinally or transversally, on the new Wilson coefficients is discussed. (C) 2001 Published by Elsevier Science B.V.


Rare B -> l(+)l(-)gamma decay and new physics effects
Alıyev, Tahmasıb; Özpineci, Altuğ; Savcı, Mustafa (2001-11-08)
Using the most general, model independent form of the effective Hamiltonian rare decays B --> l(+)l(-)gamma (l = mu, tau) are studied. The sensitivity of the photon energy distribution and branching ratio to the new Wilson coefficients is investigated.
Rare B-s ->gamma nu(nu)over-bar decay with polarized photon and new physics effects
Sirvanli, B; Turan, Gürsevil (World Scientific Pub Co Pte Lt, 2003-01-10)
Using the most general, model-independent effective Hamiltonian, the rare B-s --> gammanu(ν) over bar decay with polarized photon is studied. The sensitivity of the branching ratio and photon polarization to the new Wilson coefficients are investigated. It is shown that these physical observables are sensitive to the vector and tensor type interactions, which would be useful in search of new physics.
Radiative Omega(Q)* -> Omega(Q)gamma and Xi(Q)* -> Xi(Q)'gamma transitions in light cone QCD
Alıyev, Tahmasıb; SUNDU PAMUK, HAYRİYE (2015-01-14)
We calculate the magnetic dipole and electric quadrupole moments associated with the radiative Omega(Q)* -> Omega(Q)gamma and Xi(Q)* -> Xi(Q)'gamma transitions with Q = b or c in the framework of light cone QCD sum rules. It is found that the corresponding quadrupole moments are negligibly small, while the magnetic dipole moments are considerably large. A comparison of the results of the considered multi-pole moments as well as corresponding decay widths with the predictions of the vector dominance model is...
Exclusive B -> Ml(+)l(-) (M = pi, K, rho, K*) decays and determinations of vertical bar V-ts vertical bar (and vertical bar V-td/V-ts vertical bar)
Alıyev, Tahmasıb; Savci, M (Elsevier BV, 1998-11-26)
We examine the possibility for precise determination of /V-ts/ (and /V-td/V-ts/) from the exclusive decays, B --> Kl(+)l(-), B --> K*l(+)l(-) (and B --> pi l(+)l(-), B --> rho l(+)l(-)). We show that the ratio /V-ts/ can be extracted experimentally with a small theoretical uncertainty from hadronic form-factors, if we appropriately constrain kinematical regions of q(2). We also give detailed analytical and numerical results on the differential decay width d Gamma(B --> K*l(+)l(-))/dq(2), and the ratios of i...
Double-lepton polarization asymmetries in the B -> Kl(+)l(-) decay beyond the standard model
Alıyev, Tahmasıb; Savcı, Mustafa (Springer Science and Business Media LLC, 2004-06-01)
General expressions for the double-lepton polarizations in the B --> Kl(+)l(-)decay are obtained, using a model independent effective Hamiltonian, including all possible interactions. Correlations between the averaged double-lepton polarization asymmetries and the branching ratio, as well as the averaged single-lepton polarization asymmetry are studied. It is observed that a study of the double-lepton polarization asymmetries can serve as a good test for establishing new physics beyond the standard model.
Citation Formats
T. Alıyev, A. Özpineci, and M. Savcı, “Rare B -> K*nu(nu)over-bar decay beyond standard model,” PHYSICS LETTERS B, pp. 77–84, 2001, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/38767.