{"title":"𝚲𝒄 → 𝚲 form factors in lattice QCD","authors":"H. Bahtiyar","doi":"10.3906/fiz-2104-28","DOIUrl":null,"url":null,"abstract":"Studying the semileptonic decays of charmed particles is prominent in testing the Standard Model of particle physics. Motivated by recent experimental progress in weak decays of the charm baryon sector, we study the form factors of Λc → Λ`ν transition on two flavor lattices. We compute twoand three-point functions, extract the dimensionless projected correlators, and combine them to form the Weinberg form factors. In the zero transferred momentum limit f1, f2 and g1 form factors are found to be in agreement with other models, furthermore f3 and g3 form factors are comparable to model determinations. The g2 form factor, on the other hand, is found to be mildly larger. We also evaluate the helicity form factors, which is consistent with the previous lattice studies.","PeriodicalId":46003,"journal":{"name":"Turkish Journal of Physics","volume":null,"pages":null},"PeriodicalIF":1.4000,"publicationDate":"2021-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"6","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Turkish Journal of Physics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3906/fiz-2104-28","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 6
Abstract
Studying the semileptonic decays of charmed particles is prominent in testing the Standard Model of particle physics. Motivated by recent experimental progress in weak decays of the charm baryon sector, we study the form factors of Λc → Λ`ν transition on two flavor lattices. We compute twoand three-point functions, extract the dimensionless projected correlators, and combine them to form the Weinberg form factors. In the zero transferred momentum limit f1, f2 and g1 form factors are found to be in agreement with other models, furthermore f3 and g3 form factors are comparable to model determinations. The g2 form factor, on the other hand, is found to be mildly larger. We also evaluate the helicity form factors, which is consistent with the previous lattice studies.
期刊介绍:
The Turkish Journal of Physics is published electronically 6 times a year by the Scientific and Technological Research Council of Turkey (TÜBİTAK) and accepts English-language manuscripts in various fields of research in physics, astrophysics, and interdisciplinary topics related to physics. Contribution is open to researchers of all nationalities.