Pedro Bicudo, Marina Krstic Marinkovic, Lasse Müller, Marc Wagner
{"title":"从格状 QCD 得出的 $u$、$d$ 和 $s$ 轻夸克的抗静电 $\\bar Q \\bar Q qq$ 电位","authors":"Pedro Bicudo, Marina Krstic Marinkovic, Lasse Müller, Marc Wagner","doi":"arxiv-2409.10786","DOIUrl":null,"url":null,"abstract":"We report on our ongoing lattice QCD computation of antistatic-antistatic\npotentials in the presence of two light quarks using the CLS $N_f=2$ gauge\nconfigurations and the OpenQ*D codebase. We utilize a set of 16 creation\noperators, corresponding to 8 sectors characterized by angular momentum and\nparity quantum numbers for light quarks $qq = (ud - du) / \\sqrt{2}$ (isospin\n$0$), $qq \\in \\{ uu , (ud + du) / \\sqrt{2}, dd \\}$ (isospin $1$) and $qq \\in \\{\nus , ds \\}$ (isospin $1/2$ and strangeness $-1$). We improve on previous work\nby considering a large number of off-axis separations of the static antiquarks\nand by using tree-level improvement. The resulting potentials provide vague\nindication for one-pion exchange at $\\bar Q \\bar Q$ separations $r \\gtrapprox$\n0.5 fm.","PeriodicalId":501067,"journal":{"name":"arXiv - PHYS - High Energy Physics - Phenomenology","volume":"195 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Antistatic-antistatic $\\\\bar Q \\\\bar Q qq$ potentials for $u$, $d$ and $s$ light quarks from lattice QCD\",\"authors\":\"Pedro Bicudo, Marina Krstic Marinkovic, Lasse Müller, Marc Wagner\",\"doi\":\"arxiv-2409.10786\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"We report on our ongoing lattice QCD computation of antistatic-antistatic\\npotentials in the presence of two light quarks using the CLS $N_f=2$ gauge\\nconfigurations and the OpenQ*D codebase. We utilize a set of 16 creation\\noperators, corresponding to 8 sectors characterized by angular momentum and\\nparity quantum numbers for light quarks $qq = (ud - du) / \\\\sqrt{2}$ (isospin\\n$0$), $qq \\\\in \\\\{ uu , (ud + du) / \\\\sqrt{2}, dd \\\\}$ (isospin $1$) and $qq \\\\in \\\\{\\nus , ds \\\\}$ (isospin $1/2$ and strangeness $-1$). We improve on previous work\\nby considering a large number of off-axis separations of the static antiquarks\\nand by using tree-level improvement. The resulting potentials provide vague\\nindication for one-pion exchange at $\\\\bar Q \\\\bar Q$ separations $r \\\\gtrapprox$\\n0.5 fm.\",\"PeriodicalId\":501067,\"journal\":{\"name\":\"arXiv - PHYS - High Energy Physics - Phenomenology\",\"volume\":\"195 1\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-09-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"arXiv - PHYS - High Energy Physics - Phenomenology\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/arxiv-2409.10786\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"arXiv - PHYS - High Energy Physics - Phenomenology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/arxiv-2409.10786","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Antistatic-antistatic $\bar Q \bar Q qq$ potentials for $u$, $d$ and $s$ light quarks from lattice QCD
We report on our ongoing lattice QCD computation of antistatic-antistatic
potentials in the presence of two light quarks using the CLS $N_f=2$ gauge
configurations and the OpenQ*D codebase. We utilize a set of 16 creation
operators, corresponding to 8 sectors characterized by angular momentum and
parity quantum numbers for light quarks $qq = (ud - du) / \sqrt{2}$ (isospin
$0$), $qq \in \{ uu , (ud + du) / \sqrt{2}, dd \}$ (isospin $1$) and $qq \in \{
us , ds \}$ (isospin $1/2$ and strangeness $-1$). We improve on previous work
by considering a large number of off-axis separations of the static antiquarks
and by using tree-level improvement. The resulting potentials provide vague
indication for one-pion exchange at $\bar Q \bar Q$ separations $r \gtrapprox$
0.5 fm.
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