We investigate the D^0-D^-0 mixing through the doubly Cabibbo suppressed （DCS） channel D0 → f0（980）K^＊0 and its charge conjugate channel, in which the K^＊0 meson is reconstructed in both K^＋π^- and Ksπ^0 fin...We investigate the D^0-D^-0 mixing through the doubly Cabibbo suppressed （DCS） channel D0 → f0（980）K^＊0 and its charge conjugate channel, in which the K^＊0 meson is reconstructed in both K^＋π^- and Ksπ^0 final state. Although the decay D0 → f0（980）K^＊ has a small branching ratio, the final state mesons are relatively easy to identify. The f0（980） meson can be replaced by the S-wave π^＋π^- state, or a longitudinally polarized vector meson ρ^0. All mixing parameters, including the mass difference and decay width difference, can be extracted by studying the time-dependent decay width of these channels. We show that the method is valid in all regions for mixing parameters and it does not depend on the strong phase difference.展开更多
I show that the CP-violating asymmetry in K^0 vs K^0→π^＋π^-π^0 decays differs from that in KL→π^＋π^-, KL →π^0π^0 or the semileptonic KL transitions, if there exists CPT violation in K^0-K^0 mixing. A delic...I show that the CP-violating asymmetry in K^0 vs K^0→π^＋π^-π^0 decays differs from that in KL→π^＋π^-, KL →π^0π^0 or the semileptonic KL transitions, if there exists CPT violation in K^0-K^0 mixing. A delicate measurement of this difference at a super flavor factory （e.g., the φ factory） will provide us with a robust test of CPT symmetry in the neutral kaon system.展开更多
In this paper, the problem of program performance scheduling with accepting strategy is studied. Considering the uncertainty of actual situation, the duration of a program is expressed as a bounded interval. Firstly, ...In this paper, the problem of program performance scheduling with accepting strategy is studied. Considering the uncertainty of actual situation, the duration of a program is expressed as a bounded interval. Firstly, we decide which programs are accepted. Secondly, the risk preference coefficient of the decision maker is introduced. Thirdly, the min-max robust optimization model of the uncertain program show scheduling is built to minimize the performance cost and determine the sequence of these programs. Based on the above model, an effective algorithm for the original problem is proposed. The computational experiment shows that the performance’s cost (revenue) will increase (decrease) with decision maker’s risk aversion.展开更多
The authoros specialize in the field of optunization and automatic programme oftrain working graph. In this peper, at frist, a mixed 0-1 integer progranimingmodel about this problem for duuble-track lines is set up, t...The authoros specialize in the field of optunization and automatic programme oftrain working graph. In this peper, at frist, a mixed 0-1 integer progranimingmodel about this problem for duuble-track lines is set up, then the principle andProcess of selution are stated, with an application exaiiiple put forward.展开更多
基金National Natural Science Foundation of China (10735080, 10625525)
文摘We investigate the D^0-D^-0 mixing through the doubly Cabibbo suppressed （DCS） channel D0 → f0（980）K^＊0 and its charge conjugate channel, in which the K^＊0 meson is reconstructed in both K^＋π^- and Ksπ^0 final state. Although the decay D0 → f0（980）K^＊ has a small branching ratio, the final state mesons are relatively easy to identify. The f0（980） meson can be replaced by the S-wave π^＋π^- state, or a longitudinally polarized vector meson ρ^0. All mixing parameters, including the mass difference and decay width difference, can be extracted by studying the time-dependent decay width of these channels. We show that the method is valid in all regions for mixing parameters and it does not depend on the strong phase difference.
基金Supported by National Natural Science Foundation of China (10425522,10875131)Ministry of Science and Technology of China (2009CB825207)
文摘I show that the CP-violating asymmetry in K^0 vs K^0→π^＋π^-π^0 decays differs from that in KL→π^＋π^-, KL →π^0π^0 or the semileptonic KL transitions, if there exists CPT violation in K^0-K^0 mixing. A delicate measurement of this difference at a super flavor factory （e.g., the φ factory） will provide us with a robust test of CPT symmetry in the neutral kaon system.
文摘In this paper, the problem of program performance scheduling with accepting strategy is studied. Considering the uncertainty of actual situation, the duration of a program is expressed as a bounded interval. Firstly, we decide which programs are accepted. Secondly, the risk preference coefficient of the decision maker is introduced. Thirdly, the min-max robust optimization model of the uncertain program show scheduling is built to minimize the performance cost and determine the sequence of these programs. Based on the above model, an effective algorithm for the original problem is proposed. The computational experiment shows that the performance’s cost (revenue) will increase (decrease) with decision maker’s risk aversion.
文摘The authoros specialize in the field of optunization and automatic programme oftrain working graph. In this peper, at frist, a mixed 0-1 integer progranimingmodel about this problem for duuble-track lines is set up, then the principle andProcess of selution are stated, with an application exaiiiple put forward.
