B-meson semileptonic decays from highly improved staggered quarks

Conference · Sat May 04 04:00:00 EDT 2024 · PoS

DOI:https://doi.org/10.22323/1.453.0240· OSTI ID:2407262

Lytle, Andrew ^[1]; DeTar, Carleton ^[2]; Gámiz, Elvira ^[3]; Gottlieb, Steven ^[4]; Jay, William ^[5]; El-Khadra, Aida X. ^[1]; Kronfeld, Andreas ^[6]; Laiho, Jack ^[7]; Simone, James N. ^[6]; Vaquero, Alejandro ^[8]

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1. Illinois U., Urbana
2. Utah U.
3. Granada U., Theor. Phys. Astrophys.
4. Indiana U.
5. MIT, Cambridge, CTP
6. Fermilab
7. Syracuse U.
8. Zaragoza U.

We present an update for results on B-meson semileptonic decays using the highly improved staggered quark (HISQ) action for both valence and 2+1+1 sea quarks. The use of the highly improvedaction, combined with the MILC collaboration’s gauge ensembles with lattice spacings down to $$\sim$$0.03fm, allows the $$b$$ quark to be treated with the same discretization as the lighter quarks. The talk willfocus on updated results for $$B_{(s)} \to D_{(s)}$$, $$B_{(s)} \to K$$ scalar and vector form factors.

• Research Organization: Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 2407262
• Report Number(s): FERMILAB-CONF-24-0032-T; MIT-CTP/5674; arXiv:2403.03959; oai:inspirehep.net:2766192
• Conference Information: Journal Name: PoS Journal Volume: LATTICE2023
• Country of Publication: United States
• Language: English