Hadronic mass moments in inclusive semileptonic B meson decays - INSPIRE

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Hadronic mass moments in inclusive semileptonic B meson decays

CLEO

Collaboration

•

D. Cronin-Hennessy
(
- Rochester U.
)

Aug, 2001

11 pages

Published in:

Phys.Rev.Lett. 87 (2001) 251808

e-Print:

hep-ex/0108033 [hep-ex]

DOI:

10.1103/PhysRevLett.87.251808

PDG:

\langle{}\mathit M{}^{2}_{{{\mathit X}}}-{{\overline{\mathit M}}}{}^{2}_{{{\mathit D}}}\rangle{}

(First Moments)

Report number:

CLNS-01-1752,
CLEO-01-17

Experiments:

CESR-CLEO-II

View in:

ADS Abstract Service

reference search148 citations

Citations per year

Abstract: (arXiv)

We have measured the first and second moments of the hadronic mass-squared distribution in B -> X_c l nu, for P(lepton) > 1.5 GeV/c. We find = 0.251 +- 0.066 GeV^2, < (M_X^2 -)^2 > = 0.576 +- 0.170 GeV^4, where M_D[Bar] is the spin-averaged D meson mass. From that first moment and the first moment of the photon energy spectrum in b -> s gamma, we find the HQET parameter lambda_1 (MS[Bar], to order 1/M^3 and beta_0 alpha_s^2) to be -0.24 +- 0.11 GeV^2. Using these first moments and the B semileptonic width, and assuming parton-hadron duality, we obtain |V_cb| = 0.0404 +- 0.0013.

electron positron: colliding beams
electron positron: annihilation
Upsilon(10570): electroproduction
B: pair production
B: semileptonic decay
B: width
hadron: mass spectrum
bottom
quark: radiative decay
photon: energy spectrum

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Figures(0)

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