{"title":"Construction of \u0000bbu¯d¯\u0000 tetraquark states on lattice with NRQCD bottom and HISQ up and down quarks","authors":"Protick Mohanta, S. Basak","doi":"10.1103/physrevd.102.094516","DOIUrl":"https://doi.org/10.1103/physrevd.102.094516","url":null,"abstract":"We construct $bbbar{u}bar{d}$ states on lattice using NRQCD action for bottom and HISQ action for the light up/down quarks. The NRQCD-HISQ tetraquark operators are constructed for \"bound\" $[bb][bar{u}bar{d}]$ and \"molecular\" $[bbar{u}] [bbar{d}]$ states. Corresponding to these different operators, two different appropriately tuned light quark masses are needed to obtain the desired spectra. We explain this requirement of different $m_{u/d}$ in the light of relativised quark model involving Hartree-Fock calculation. The mass spectra of double bottom tetraquark states are obtained on MILC $N_f=2+1$ Asqtad lattices at three different lattice spacings. Variational analysis has been carried out to obtain the relative contribution of \"bound\" and \"molecular\" states to the energy eigenstates.","PeriodicalId":8440,"journal":{"name":"arXiv: High Energy Physics - Lattice","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88011780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}