QCD permits the existence of hybrid mesons that are made up of both quarks and gluons, including exotic states, i.e., quantum numbers prohibited for pure quark-antiquark states, with possible candidates found in experiments. We present static hybrid potentials measured via Laplace trial states together with static-light meson thresholds on $N_f=3+1$ dynamical fermion ensembles with 420 MeV pions. Furthermore, we measure corresponding gluelump masses which refer to the $R\rightarrow0$ limit of the hybrid potentials and are essential input parameters for effective models to describe hybrid mesons.
When the center matters: color screening and gluelumps in dihedral lattice gauge theories
ICFO - Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology（ICFO-光子科学研究所，巴塞罗那科技研究所）；Pitaevskii BEC Center, CNR-INO and Dipartimento di Fisica, Università di Trento（皮塔耶夫斯基玻色-爱因斯坦凝聚中心，意大利国家研究委员会光学研究所和特伦托大学物理系）；INFN-TIFPA, Trento Institute for Fundamental Physics and Applications（意大利核物理研究所-特伦托基础物理与应用研究所）；Honda Research Institute Europe GmbH（本田欧洲研究院有限公司）；Dipartimento di Fisica, Università di Pisa, and INFN, Sezione di Pisa（比萨大学物理系和意大利核物理研究所比萨分部）；Dipartimento di Fisica e Astronomia “G. Galilei” and Padua Quantum Technologies Research Center, Universit‘a di Padova（帕多瓦大学伽利略物理与天文系和帕多瓦量子技术中心）；Istituto Nazionale di Fisica Nucleare (INFN), Sezione di Padova（意大利国家核物理研究所帕多瓦分部）
Radiative corrections to the lattice gluon action for highly improved staggered quarks (HISQ) and the effect of such corrections on the static potential
Neutral B-meson mixing from dynamical lattice QCD with chiral light quarks and static b-quarks
在无限重b夸克的极限下，我们计算了中性B介子混合矩阵元的SU（3）破缺比xi。我们还提出了衰减常数比f_{B_s} / f_{B_d}的结果。我们的计算采用保手性的域壁费米子的轻夸克，一个静态的行动与链接涂抹的b-夸克，和岩崎规范行动。在这里，我们报告了16^3 x 32 x 16系综（a^-1 = 1.729（28）GeV）的结果，我们用它来验证我们的方法。我们改进了我们以前的工作，包括O（alpha_spa）匹配的衰变常数的计算和外推到物理点，使用手征微扰理论。
