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By assuming that the scalar meson KK0*(1430) belongs to the rst excited states or the lowest lying ground states of qq', we study the pure annihilation-type decays B→K0*±(1430)K(*)+ in the QCD factorization approach. Within the Standard Model, the branching fractions are of the order of 10-8-10-7, which is possible to measure in the ongoing LHCb experiment or forthcoming Belle-II experiment. We also study these decays in the family non-universal Z' model. The results show that if mZ' 600 GeV (ξ =0.02), both the branching fractions and CP asymmetries of q0 →K0*+(1430)K- could be changed remarkably, which provides us with a place for probing the e ect of new physics. These results could be used to constrain the parameters of the Z' model. 相似文献
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Fu-Yue Wang Yi Wang Bo Xie Dong Han Peng-Fei L& uuml Bao-Hong Guo Yuan-Jing Li 《中国物理C(英文版)》2016,40(11):116006-116006
The Compact Muon Solenoid (CMS) at LHC intends to use a high rate trapezoid MRPC for the muon system upgrade, but the size of the MRPC is limited by the dimensions of low resistivity glass. We have designed a prototype of a large MRPC in which the electrodes are developed by gluing two pieces of glass plates. Simulation of the weighting field and cosmic ray test shows that the efficiency of the glued MRPC is higher than 96% and the time resolution is better than 71 ps. 相似文献
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The D*D1(2420) and DD'*(2600) interactions are studied in a one-boson-exchange model. Isovector bound state solutions with spin parity JP=1+ are found from the D*D1(2420) interaction, which may be related to the observed charged charmonium-like state Z(4430). There is no bound state solution found from the DD'*(2600) interaction. 相似文献
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A Flash-ADC data acquisition system developed for a drift chamber array and a digital filter algorithm for signal processing
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Han Yi Li-Ming L& uuml Zhao Zhang Wen-Jing Cheng Wei Ji Yan Huang Yan Zhang Hong-Jie Li Yin-Ping Cui Ming Lin Yi-Jie Wang Li-Min Duan Rong-Jiang Hu Zhi-Gang Xiao 《中国物理C(英文版)》2016,40(11):116102-116102
A Flash-ADC data acquisition (DAQ) system has been developed for the drift chamber array designed for the External-Target-Experiment at the Cooling Storage Ring at the Heavy Ion Research Facility, Lanzhou. The simplified readout electronics system has been developed using the Flash-ADC modules and the whole waveform in the sampling window is obtained, with which the time and energy information can be deduced with an offline processing. A digital filter algorithm has been developed to discriminate the noise and the useful signal. With the digital filtering process, the signal to noise ratio (SNR) is increased and a better time and energy resolution can be obtained. 相似文献
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