Kaon semileptonic form factors at the physical quark masses on large volumes in N_f = 2 + 1 lattice QCD
Kaon semileptonic form factors at the physical quark masses on large volumes in N_f = 2 + 1 lattice QCD
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N_f = 2 1 晶格 QCD 中大体积物理夸克质量处的 Kaon 半轻形状因子
DOI：
10.1088/1742-6596/2446/1/012007
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发表时间：
2023
期刊：
影响因子：
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通讯作者：
Yoshie Tomoteru
中科院分区：
文献类型：
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作者：
Yamazaki Takeshi;Ishikawa Ken-ichi;Ishizuka Naruhito;Kuramashi Yoshinobu;Namekawa Yusuke;Taniguchi Yusuke;Ukita Naoya;Yoshie Tomoteru
本文给出了用物理体积大于（10fm） 4的物理光和奇异夸克质量在N f= 2+ 1晶格QCD中的两组PACS10构型计算的kaon半光子形状因子的结果。构型是使用岩崎规范作用和N f= 2+ 1粗壮涂抹三叶草夸克作用产生的。由于体积大，可以计算出零动量传递q2附近的形状因子。利用我们的数据，同时进行了q2插值和连续统外推。| V和|的值是使用连续体极限中q 2= 0处的形状因子的结果确定的。我们的| V us|的结果与由CKM矩阵统一性确定的结果以及用最近的晶格结果确定的结果进行了比较。
We present our results for the kaon semileptonic form factors calculated by using two sets of the PACS10 configuration, whose physical volumes are more than (10 fm) 4 at the physical light and strange quark masses in the N f= 2+ 1 lattice QCD. The configurations were generated using the Iwasaki gauge action and N f= 2+ 1 stout-smeared clover quark action. The form factors near zero momentum transfer q 2 can be calculated thanks to the large volume. Using our data, a q 2 interpolation and continuum extrapolation are carried out simultaneously. The value of| V us| is determined using the result of the form factors at q 2= 0 in the continuum limit. Our result of| V us| is compared with the one determined from the CKM matrix unitarity and with those determined using recent lattice results.