Recent Belle II results on the CKM parameters $|V_{cb}|$ and $|V_{ub}|$

Sumitted to PubDB: 2022-07-29

Category: Talk, Visibility: Public

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Authors	Taichiro Koga
Date	July 6, 2022
Belle II Number	BELLE2-TALK-CONF-2022-082
Abstract	emileptonic 𝐵 decays allow to determine the magnitudes of the CKM matrix parameters \|𝑉𝑐𝑏\| and \|𝑉𝑢𝑏\|, two fundamental parameters of the standard model flavor sector. At Belle II these measurements use both exclusive decays such as 𝐵→𝐷∗ℓ𝜈 and 𝐵→𝜋ℓ𝜈, or inclusive 𝑋𝑐ℓ𝜈 or 𝑋𝑢ℓ𝜈 final states restricted in phase space. The low-background collision environment along with the possibility of partially or fully reconstructing one of the two 𝐵 mesons in the event offer high precision. Recent results on \|𝑉𝑐𝑏\| and \|𝑉𝑢𝑏\|, along with a novel measurement of lepton-𝑞2 moments are presented, along with future perspectives.
Conference	ICHEP 2022