在线阅读 --自然科学版 2014年1期《在CQM模型下研究BSDSJ(3040)lv的半轻衰变》
在CQM模型下研究BSDSJ(3040)lv的半轻衰变--[在线阅读]
王芳1, 高占军2, 赵树民3, 张逸宁3
1. 河北大学 电子信息工程学院, 河北 保定 071002;
2. 河北大学 大学外语教研部, 河北 保定 071002;
3. 河北大学 物理科学与技术学院, 河北 保定 071002
起止页码: 46--49页
DOI: 10.11826/j.issn.1000-5854.2014.01.010
摘要
基于DSJ(3040)粒子性质尚未确定这一课题,利用组分夸克模型(CQM),研究半轻衰变过程BSDSJ(3040)lv.认为DSJ(3040)是由cc组成的激发态,它的自旋-宇称为JP=1+sl=3/2,属于T类型的双重态(1+,2+).理论计算得到了数值结果,其分支比为0.9%~2.7%,这对最终确定DSJ(3040)的性质、检验CQM模型的合理性有重要意义.

Study of Semilepton Decay BSDSJ(3040)lv in the CQM Model
WANG Fang1, GAO Zhanjun2, ZHAO Shumin3, ZHANG Yining3
1. College of Electronic and Informational Engineering, Hebei University, Hebei Baoding 071002, China;
2. Department of Forein Languages Teaching and Research, Hebei University, Hebei Baoding 071002, China;
3. College of Physics Science and Technology, Hebei University, Hebei Baoding 071002, China
Abstract:
The characteristic of the DSJ(3040) has not confirmed.Based on the assumption that the exotic state DSJ(3040) is constituted by c s with JP=1+ and sl=3/2, and belongs to T doublet (1+, 2+), the semilepton decay BSDSJ(3040)lv is studied by the CQM model.The numerical results are obtained and the branching ratios range from 0.9% to 2.7%.This work is in favour of confirming the characteristic of the DSJ(3040), and checking the rationality of the CQM model.

收稿日期: 2013-7-30
基金项目: 国家自然科学基金(11047002);河北省自然科学基金(A2011201118)

参考文献:
[1]ZHAO Shumin,ZHANG Yinjie,YAN Yuli,et al.Study of Semileptonic Decays BS→DS1(2536)l and BS→DS2(2573)l in the CQM Model [J].Chin Phys C,2008,32(8):603-607.
[2]ZHANG Jianjun,ZHAO Shumin,HUANG Debao.Study of Radiative Decays DS1(2536)→DS(1968)+Gamma and DS1(2536)→D*S(2112)+Gamma in CQM Model [J].Commun Theor Phys,2010,54:300-304.
[3]LUO Zhigang,CHEN Xiaolin,LIU Xiang,et al.Semileptonic Decays of BS1,B*S2,BS0and BSl [J].Eur Phys J C,2009,60:403-411.
[4]ABAZOV V M,BLOOM K A,NOW C.Measurement of the Semileptonic Ranching Ratio of B0s to an Orbitally Ecited D*S State Br(B0S→D-SJ(2536)μ+νX) [J].Phys Rev Lett,2009,102:051801.
[5]SUN Zhifeng,LIU Xiang.Newly Observed DSJ(3040)and the Radial Excitations of P-wave Charmed-strange Mesons [J].Phys Rev D,2009,80:074037.
[6]AUBERT B,KARYOTAKIS Y,LEES J P,et al.Study of DSJ Decays to D*K in Inclusive e+ e-Interactions [J].Phys Rev D,2009,80:092003.
[7]BERINGEER J,ARGUIN J F,BARNETT R M,et al.Review of Particle [J].Phys Rev D,2012,86:010001.
[8]GHAHRAMANY N,BELADI S M.Investigation of the Semileptonic Weak Decays of BS to S (Scalar Meson)via Light-cone QCD Sum Rules [J].Phys Part Nucl Lett,2013,10:205-214.
[9]SACCO R.Semileptonic B Decays and Implications for Higgs Searches [J].Acta Phys Polon B,2012,43:1581-1592.
[10]POLOSA A D.The CQM Model [J].Riv Nuovo Cim,2000,23(11):1-75.
[11]EBERT D,FELDMANN T,REINHARDT H.Extended Njl Model for Light and Heavy Mesons Without Q-qbar Thresholds [J].Phys Lett B,1996,388:154-160.
[12]ISGUR N,WISE M.Spectroscopy Tith Heavy Quark Symmetry [J].Phys Rev Lett,1991,66:1130-1133.