Measurement of differential distributions of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>B</mml:mi><mml:mo stretchy="false">→</mml:mo><mml:msup><mml:mi>D</mml:mi><mml:mo>*</mml:mo></mml:msup><mml:mo>ℓ</mml:mo><mml:msub><mml:mover accent="true"><mml:mi>ν</mml:mi><mml:mo stretchy="false">¯</mml:mo></mml:mover><mml:mo>ℓ</mml:mo></mml:msub></mml:math> and implications on <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mo stretchy…
نویسندگان
چکیده
We present a measurement of the differential shapes exclusive B→D*ℓν¯ℓ (B=B−,B¯0 and ℓ=e, μ) decays with hadronic tag-side reconstruction for full 711 fb−1 Belle dataset. extract Caprini-Lellouch-Neubert (CLN) Boyd-Grinstein-Lebed (BGL) form factor parameters use an external input absolute branching fractions to determine Cabibbo-Kobayashi-Maskawa matrix element find |Vcb|CLN=(40.2±0.9)×10−3 |Vcb|BGL=(40.7±1.0)×10−3 zero-recoil lattice QCD point F(1)=0.906±0.013. also perform study impact beyond calculations on |Vcb| determinations. Additionally, we lepton-flavor universality ratio Reμ=B(B→D*eν¯e)/B(B→D*μν¯μ)=0.993±0.023±0.023, electron muon forward-backward asymmetry their difference ΔAFB=0.028±0.028±0.008, D* longitudinal polarization fraction ΔFLD*=0.030±0.025±0.007. The uncertainties quoted correspond statistical systematic uncertainties, respectively.8 MoreReceived 23 January 2023Accepted 5 May 2023DOI:https://doi.org/10.1103/PhysRevD.108.012002Published by American Physical Society under terms Creative Commons Attribution 4.0 International license. Further distribution this work must maintain attribution author(s) published article’s title, journal citation, DOI. Funded SCOAP3.Published SocietyPhysics Subject Headings (PhySH)Research AreasForm factorsLeptonic, semileptonic & radiative decaysParticles Fields
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ژورنال
عنوان ژورنال: Physical review
سال: 2023
ISSN: ['0556-2813', '1538-4497', '1089-490X']
DOI: https://doi.org/10.1103/physrevd.108.012002