Fermilab Lattice, MILC Collaborations, :, Yuzhi Liu, Jon A. Bailey, A. Bazavov, C. Bernard, C. M. Bouchard, C. DeTar, Daping Du, A. X. El-Khadra, E. D. Freeland… 展开作者
Fermilab Lattice, MILC Collaborations, :, Yuzhi Liu, Jon A. Bailey, A. Bazavov, C. Bernard, C. M. Bouchard, C. DeTar, Daping Du, A. X. El-Khadra, E. D. Freeland, E. Gámiz, Z. Gelzer, Steven Gottlieb, U. M. Heller, A. S. Kronfeld, J. Laiho, P. B. Mackenzie, Y. Meurice, E. T. Neil, J. N. Simone, R. Sugar, D. Toussaint, R. S. Van de Water, Ran Zhou
备注：
8 pages, 6 figures, to appear in the Proceedings of Lattice 2017, June 18-24, Granada, Spain
利用MILC 2+1味夸克作用量系综，计算了半轻子$B_s \rightarrow K \ellν$衰变的形状因子$f_0$和$f_+$.总共使用六个具有从$\approx0.12$到0.06 fm的晶格间距的系综。在最粗和最细晶格间距下，轻夸克质量$m'_l$是奇夸克质量$m'_s$的十分之一。在中间晶格间距处，比率$m'_l/m'_s$在0.05至0.2的范围内。用Sheikholeslami-Wohlert Wilson-Clover作用量和费米实验室解释处理价$b$夸克。其他价夸克使用asqtad作用量。当与LHCb和Belle II实验的（未来）测量相结合时，这些计算将提供CKM矩阵元素$|V_{ub}|$的替代确定。
英文摘要：
Using the MILC 2+1 flavor asqtad quark action ensembles, we are calculating the form factors $f_0$ and $f_+$ for the semileptonic $B_s \rightarrow K \ellν$ decay. A total of six ensembles with lattice spacing from $\approx0.12$ to 0.06 fm are being used. At the coarsest and finest lattice spacings, the light quark mass $m'_l$ is one-tenth the strange quark mass $m'_s$. At the intermediate lattice spacing, the ratio $m'_l/m'_s$ ranges from 0.05 to 0.2. The valence $b$ quark is treated using the Sheikholeslami-Wohlert Wilson-clover action with the Fermilab interpretation. The other valence quarks use the asqtad action. When combined with (future) measurements from the LHCb and Belle II experiments, these calculations will provide an alternate determination of the CKM matrix element $|V_{ub}|$.
Form factors of the $D_s \to ϕ\ell ν_\ell$ semileptonic decay with (2+1)-flavor lattice QCD
The CLQCD Collaboration（量子物质协同创新中心）；School of Physics, Nanjing University（南京大学物理学院）；Institute of High Energy Physics, Chinese Academy of Sciences（中国科学院高能物理研究所）；School of Physics, Zhengzhou University（郑州大学物理学院）；School of Physics, Peking University（北京大学物理学院）；Center for High Energy Physics, Peking University（北京大学高能物理中心）；Collaborative Innovation Center of Quantum Matter（量子物质协同创新中心）；School of Physical Sciences, University of Chinese Academy of Sciences（中国科学院大学物理科学学院）
Untangling the heavy-flavor mess: status of the Fermilab-MILC calculation of the $B_{(s)}\to D^{(\ast)}_{(s)}\ellν$ form factors
Universidad de Zaragoza（萨拉戈萨大学）；University of Utah（犹他大学）；University of Illinois Urbana-Champaign（伊利诺伊大学厄巴纳-香槟分校）；Illinois Center for Advanced Studies of the Universe, University of Illinois Urbana-Champaign（伊利诺伊大学厄巴纳-香槟分校宇宙高级研究中心）；Indiana University（印第安纳大学）；Colorado State University（科罗拉多州立大学）；Fermi National Accelerator Laboratory（费米国家加速器实验室）
$B \to π\ell ν$ and $B_s \to K \ell ν$ form factors and $|V_{ub}|$ from 2+1-flavor lattice QCD with domain-wall light quarks and relativistic heavy quarks
Puzzles in charmed baryon semileptonic decays with $SU(3)_F$ flavor symmetry and lattice inputs
School of Fundamental Physics and Mathematical Sciences, Hangzhou Institute for Advanced Study, UCAS（杭州高等研究院基础物理与数学学院）；Institute of Theoretical Physics, UCAS（理论物理研究所）；University of Chinese Academy of Sciences（中国科学院大学）
Correlating lepton flavor violating $b \to s$ and leptonic decay modes in a minimal abelian extension of the Standard Model
Istituto Nazionale di Fisica Nucleare, Sezione di Bari（意大利国家核物理研究所巴里分部）；Dipartimento Interuniversitario di Fisica “Michelangelo Merlin”, Università degli Studi di Bari “Aldo Moro”（巴里阿尔多·莫罗大学米开朗基罗·梅林跨学科物理学系）
$K π$ scattering and the $K^*(892)$ resonance in 2+1 flavor QCD
在这个项目中，我们将计算与$B \to K^*(\to K π)\ell^+\ell^-$衰变相关的形状因子。为了将在晶格上计算的有限体积矩阵元素映射到无限体积$B \to K π$矩阵元素，需要使用Lüscher方法确定$K π$散射振幅。在这里，我们提出了初步的结果，从我们的计算与$2+1$口味的动态三叶草费米子。我们提取的$P$波散射相移和确定的$K^*$共振质量和$K^* K π$耦合两个不同的系综与$317(2)$和$178(2)$兆电子伏的π介子质量。
