|V_us| from kaon semileptonic form factor in N_f = 2+1 QCD at the physical point on (10 fm)⁴

2023/11/28 by Takeshi Yamazaki, Ken-Ichi Ishikawa, Yamazaki, Takeshi +13
Physics and Astronomy · #Black Holes and Theoretical Physics #FOS: Physical sciences #High Energy Physics - Lattice (hep-lat) #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions

paper · pdf · doi:10.48550/arxiv.2311.16755

openalex publication_date 2023/11/28 · openalex created_date 2023/11/30 · openalex updated_date 2026/07/28

Abstract

We present a preliminary result of the kaon semileptonic form factor calculated at the smallest lattice spacing in the PACS10 configurations, whose physical volumes are more than (10 fm)⁴ at the physical point. The configurations were generated using the Iwasaki gauge action and N_f=2+1 stout-smeared nonperturbatively O(a) improved Wilson quark action at the three lattice spacings, 0.085, 0.063, and 0.041 fm. The value of |V_us| in the continuum limit is estimated from our results including the preliminary one. We compare our result of |V_us| with the previous results and those through the kaon leptonic decay.

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