Probe R-Parity Violating Supersymmetry in Forward--Backward Asymmetry  

作　　者：郭磊 韩良 马文淦 席云峰 杨思奇 张仁友 

机构地区：[1]Department of Modern Physics, University of Science and Technology of China, Hefei 230026

出　　处：《Chinese Physics Letters》2010年第3期84-87,共4页中国物理快报（英文版）

基　　金：Supported in part by the China Postdoctoral Science Foundation （No 20080440103）, the National Natural Science Foundation of China under Grant Nos 10875112, and 10675110, and the Specialized Research Fund for the Doctoral Program of Higher Education （SRFDP） （No 20093402110030）.

摘　　要：We investigate the possibility of probing R-parity violating interactions in forward-backward asymmetries, and conclude that the Tevatron collider is the best place to measure new interactions involving the first generation of quarks. With additional down type squark ~dk contributions, the charge asymmetry in e＋e— events around Z-pole mass region at the Tevatron will be sensitive to R-parity violating couplings λ’11k, which was inaccessible to the LEP Qfb had inclusive measurement. Assuming no apparent deviation from SM prediction is observed, λ’11k〈 0.19 at 95% C.L. with squark mass Mdk=100 GeV can be derived.We investigate the possibility of probing R-parity violating interactions in forward-backward asymmetries, and conclude that the Tevatron collider is the best place to measure new interactions involving the first generation of quarks. With additional down type squark ~dk contributions, the charge asymmetry in e＋e— events around Z-pole mass region at the Tevatron will be sensitive to R-parity violating couplings λ’11k, which was inaccessible to the LEP Qfb had inclusive measurement. Assuming no apparent deviation from SM prediction is observed, λ’11k〈 0.19 at 95% C.L. with squark mass Mdk=100 GeV can be derived.

分 类 号：TL507[核科学技术—核技术及应用] Q78[生物学—分子生物学]