𝚲𝒄 → 𝚲 form factors in lattice QCD

IF 1.4 Q3 PHYSICS, MULTIDISCIPLINARY Turkish Journal of Physics Pub Date : 2021-07-29 DOI:10.3906/fiz-2104-28
H. Bahtiyar
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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.
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𝚲→𝚲点阵QCD的形状因子
研究魅力粒子的半轻子衰变是检验粒子物理标准模型的重要内容。受最近魅力重子扇区弱衰变实验进展的启发,我们研究了∧c的形状因子→ 两个味格上的∧`Γ跃迁。我们计算二点和三点函数,提取无量纲投影相关器,并将它们组合起来形成Weinberg形因子。在零转移动量极限f1、f2和g1形式因子与其他模型一致,此外f3和g3形式因子与模型测定值相当。另一方面,g2的形状因子被发现稍微大一些。我们还评估了螺旋度形成因子,这与之前的晶格研究一致。
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来源期刊
Turkish Journal of Physics
Turkish Journal of Physics PHYSICS, MULTIDISCIPLINARY-
CiteScore
3.50
自引率
0.00%
发文量
8
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.
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