检索结果-南通市图书馆

Spectroscopy and decay properties of charmonium

在线全文

学校读者我要写书评

暂无评论

引用

Chinese Physics C 2018年第8期42卷 19-33页

作者： Virendrasinh kher Ajay Kumar Rai Applied Physics Department PolytechnicThe M.S.University of Baroda Department of Applied Physics Sardar Vallabhbhai National Institute of Technology

The mass spectra of charmonium are investigated using a Coulomb plus linear（Cornell）*** wave functions in position space as well as in momentum space are employed to calculate the expectation values of potential and kinetic energy *** experimental states（X（4660）（5^3S1）,X（3872）（2^3P1）,X（3900）（2^1P1）,X（3915）（2^3P0）and X（4274）（3^3P1）etc.）are assigned as charmonium *** also study the Regge trajectories,pseudoscalar and vector decay constants,electric and magnetic dipole transition rates,and annihilation decay widths for charmonium states.

关键词： potential model mass spectrum decay constant Regge trajectories

Spectroscopy,decay properties and Regge trajectories of the B and B_s mesons

在线全文

学校读者我要写书评

暂无评论

引用

Chinese Physics C 2017年第9期41卷 8-18页

作者： Virendrasinh kher Nayneshkumar Devlani Ajay Kumar Rai Applied Physics Department PolytechnicThe M.S.University of Baroda Department of Applied Physics Sardar Vallabhbhai National Institute of Technology

A Gaussian wave function is used for detailed study of the mass spectra of the B and Bs mesons using a Cornell potential incorporated with （1/m） correction in the potential energy term and expansion of the kinetic energy term up to （p10） for relativistic correction of the Hamiltonian. The predicted excited states for the B and Bs mesons are in very good agreement with results obtained by experiment. We assign B2（5747） and Bs2（5840） as the 1^3p2 state, B1（5721） and Bs1（5830） as the 1P1 state, B0（5732） as the 1^3P0 state, Bs1（5850） as the 1P1 state and B（5970） as the 23S1 state. We investigate the Regge trajectories in the （J,m2） and （nr,m2） planes with their corresponding parameters. The branching ratios for leptonic and radiative-leptonic decays are estimated for the B and Bs mesons. Our results are in good agreement with experimental observations as well as outcomes of other theoretical models.

关键词： potential model mass spectrum decay constant Regge trajectories

Excited state mass spectra, decay properties and Regge trajectories of charm and charm-strange mesons

在线全文

学校读者我要写书评

暂无评论

引用

Chinese Physics C 2017年第7期41卷 14-24页

作者： Virendrasinh kher Nayneshkumar Devlani Ajay Kumar Rai Applied Physics Department Polytechnic The M.S. University of Baroda Vadodara 390002 Gujarat India Department of Applied Physics Sardar Vallabhbhai National Institute of Technology Surat 395007 Gujarat India

The framework of a phenomenological quark-antiquark potential（Coulomb plus linear confinement）model with a Gaussian wave function is used for detailed study of masses of the ground, orbitally and radially excited states of heavy-light Qq^-,（Q=c,q=u/d,s） mesons. We incorporate a O（1/m） correction to the potential energy term and relativistic corrections to the kinetic energy term of the Hamiltonian. The spin-hyperfine, spin-orbit and tensor interactions incorporating the effect of mixing are employed to obtain the pseudoscalar, vector, radially and orbitally excited state meson masses. The Regge trajectories in the（J,m^2） and（nr,m^2） planes for heavy-light mesons are investigated with their corresponding parameters. Leptonic and radiative leptonic decay widths and corresponding branching ratios are computed. The mixing parameters are also estimated. Our predictions are in good agreement with experimental results as well as lattice and other theoretical models.

关键词： charm meson strange meson potential model