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Table 9 Summary of the experimental |V ub | determinations using the lepton endpoint; |V ub | is extracted with the "shape function" method [186].

From: B meson decays

Experiment

Lepton energy range

â„’ MathType@MTEF@5@5@+=feaagaart1ev2aaatCvAUfKttLearuWrP9MDH5MBPbIqV92AaeXatLxBI9gBaebbnrfifHhDYfgasaacH8bkY=wiFfYlOipiY=Hhbbf9v8qqaqFr0xc9vqpe0di9q8qqpG0dHiVcFbIOFHK8Feei0lXdar=Jb9qqFfeaYRXxe9vr0=vr0=LqpWqaaeaabiGaciaacaqabeaabeqacmaaaOqaamrtHrhAL1wy0L2yHvtyaeHbnfgDOvwBHrxAJfwnaGabciab=jrimbaa@35BA@ int (fb-1)

Δ ℬ MathType@MTEF@5@5@+=feaagaart1ev2aaatCvAUfKttLearuWrP9MDH5MBPbIqV92AaeXatLxBI9gBaebbnrfifHhDYfgasaacH8bkY=wiFfYlOipiY=Hhbbf9v8qqaqFr0xc9vqpe0di9q8qqpG0dHiVcFbIOFHK8Feei0lXdar=Jb9qqFfeaYRXxe9vr0=vr0=LqpWqaaeaabiGaciaacaqabeaabeqacmaaaOqaamrtHrhAL1wy0L2yHvtyaeHbnfgDOvwBHrxAJfwnaGabaiab=Xsicbaa@35C8@ (Xuℓ ν ¯ MathType@MTEF@5@5@+=feaagaart1ev2aaatCvAUfKttLearuWrP9MDH5MBPbIqV92AaeXatLxBI9gBaebbnrfifHhDYfgasaacH8bkY=wiFfYlOipiY=Hhbbf9v8qqaqFr0xc9vqpe0di9q8qqpG0dHiVcFbIOFHK8Feei0lXdar=Jb9qqFfeaYRXxe9vr0=vr0=LqpWqaaeaabiGaciaacaqabeaabeqacmaaaOqaaiqbe27aUzaaraaaaa@2CC7@ ℓ) (×104)

|V ub | (×103)

  

Ï’(4S)

cont.

  

CLEO [255]

2.6 GeV > Eâ„“ > 2.1 GeV

9.1

4.3

3.28 ± 0.23 ± 0.75

3.94 ± 0.46 − 0.33 + 0.37 MathType@MTEF@5@5@+=feaagaart1ev2aaatCvAUfKttLearuWrP9MDH5MBPbIqV92AaeXatLxBI9gBaebbnrfifHhDYfgasaacH8bkY=wiFfYlOipiY=Hhbbf9v8qqaqFr0xc9vqpe0di9q8qqpG0dHiVcFbIOFHK8Feei0lXdar=Jb9qqFfeaYRXxe9vr0=vr0=LqpWqaaeaabiGaciaacaqabeaabeqacmaaaOqaaiabiodaZiabc6caUiabiMda5iabisda0iabgglaXkabicdaWiabc6caUiabisda0iabiAda2maaDaaaleaacqGHsislcqaIWaamcqGGUaGlcqaIZaWmcqaIZaWmaeaacqGHRaWkcqaIWaamcqGGUaGlcqaIZaWmcqaI3aWnaaaaaa@3DED@

Belle [256]

2.6 GeV > Eâ„“ > 1.9 GeV

27

8.8

5.72 ± 0.41 ± 0.65

4.74 ± 0.44 − 0.30 + 0.35 MathType@MTEF@5@5@+=feaagaart1ev2aaatCvAUfKttLearuWrP9MDH5MBPbIqV92AaeXatLxBI9gBaebbnrfifHhDYfgasaacH8bkY=wiFfYlOipiY=Hhbbf9v8qqaqFr0xc9vqpe0di9q8qqpG0dHiVcFbIOFHK8Feei0lXdar=Jb9qqFfeaYRXxe9vr0=vr0=LqpWqaaeaabiGaciaacaqabeaabeqacmaaaOqaaiabisda0iabc6caUiabiEda3iabisda0iabgglaXkabicdaWiabc6caUiabisda0iabisda0maaDaaaleaacqGHsislcqaIWaamcqGGUaGlcqaIZaWmcqaIWaamaeaacqGHRaWkcqaIWaamcqGGUaGlcqaIZaWmcqaI1aqnaaaaaa@3DDD@

BaBar [257]

2.6 GeV > Eâ„“ > 2.0 GeV

80

9.5

5.72 ± 0.41 ± 0.65

4.29 ± 0.24 − 0.30 + 0.35 MathType@MTEF@5@5@+=feaagaart1ev2aaatCvAUfKttLearuWrP9MDH5MBPbIqV92AaeXatLxBI9gBaebbnrfifHhDYfgasaacH8bkY=wiFfYlOipiY=Hhbbf9v8qqaqFr0xc9vqpe0di9q8qqpG0dHiVcFbIOFHK8Feei0lXdar=Jb9qqFfeaYRXxe9vr0=vr0=LqpWqaaeaabiGaciaacaqabeaabeqacmaaaOqaaiabisda0iabc6caUiabikdaYiabiMda5iabgglaXkabicdaWiabc6caUiabikdaYiabisda0maaDaaaleaacqGHsislcqaIWaamcqGGUaGlcqaIZaWmcqaIWaamaeaacqGHRaWkcqaIWaamcqGGUaGlcqaIZaWmcqaI1aqnaaaaaa@3DD9@