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Erratum: Determination of |Vub| from measurements of the electron and neutrino momenta in inclusive semileptonic B decays (Physical Review Letters (2005) 95 (111801))

01 Jan 2006-Physical Review Letters (American Physical Society)-Vol. 97, Iss: 1, pp 019903

About: This article is published in Physical Review Letters.The article was published on 2006-01-01 and is currently open access. It has received 5 citation(s) till now. The article focuses on the topic(s): Semileptonic decay & Neutrino.
Topics: Semileptonic decay (54%), Neutrino (53%), Lepton (50%)

Content maybe subject to copyright    Report

Erratum: Determination of jV
ub
j from Measurements of the Electron and Neutrino Momenta
in Inclusive Semileptonic B decays
[Phys. Rev. Lett. 95, 111801 (2005)]
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s,
PRL 97, 019903 (2006)
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J. M. Roney, R. J. Sobie, J. J. Back, P. F. Harrison, T. E. Latham, G. B. Mohanty, H. R. Band, X. Chen, B. Cheng, S. Dasu,
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A. Mihalyi, Y. Pan, R. Prepost, P. Tan, J. H. von Wimmersperg-Toeller, S. L. Wu, Z. Yu, and H. Neal
(B
ABAR Collaboration)
(Received 9 June 2006; published 5 July 2006)
DOI: 10.1103/PhysRevLett.97.019903 PACS numbers: 13.20.He, 12.15.Hh, 14.40.Nd, 99.10.Cd
Due to a coding error, the previous Letter [1] erroneously used the variable s
max
h
in the 4S rest frame instead of
~
s
max
h
in
the B rest frame to define the region of interest for the determination of the unfolded partial branching fraction
B
~
E
cut
;
~
s
max
h;cut
. This unfolded partial branching fraction corrects for detector resolution and acceptance and corresponds
to the kinematic region where the electron energy
~
E
e
in the B rest frame exceeds
~
E
cut
, and the quantity
~
s
max
h
m
2
B
q
2
2m
B
~
E
e
q
2
=4
~
E
e
, where q
2
is the square of the four-momentum transfer in the decay, is smaller than
~
s
max
h;cut
. The
error affected only the calculation of the signal efficiencies; none of the yields quoted in the Letter are changed. The signal
acceptance and efficiencies given in Table I of Ref. [1] are incorrect, as are the values for B therein. The corrected values
for the efficiencies with
~
E
cut
2:0 GeV and
~
s
max
h;cut
3:5 GeV
2
are given in Table I. The resulting values for the partial
branching fractions are
B1:9; 3:55:29 0:44 0:7210
4
; (1)
B2:0; 3:54:41 0:42 0:4210
4
; (2)
B2:1; 3:53:68 0:43 0:3610
4
: (3)
It has been verified that the estimates of the systematic uncertainties given in Ref. [1] are unaffected by the coding error; the
fractional systematic uncertainties on B are unchanged.
TABLE I. Updated efficiencies, quoted in units of 10
4
, and the acceptance fraction.
sig
sig
f
u
256 32:7 0:20:174
PRL 97, 019903 (2006)
PHYSICAL REVIEW LETTERS
week ending
7 JULY 2006
019903-2

Using the updated partial branching fraction for
~
E
cut
2:0 GeV and the same parameters used in Ref. [1], we find
jV
ub
j4:41 0:30
0:65
0:47
0:2810
3
, where the errors represent experimental uncertainties, heavy quark parameter
uncertainties, and theoretical uncertainties, respectively.
We would like to thank Frank Tackmann for alerting us to the error in the original efficiency calculation.
[1] B. Aubert et al. (BABAR Collaboration), Phys. Rev. Lett. 95, 111801 (2005).
PRL 97, 019903 (2006)
PHYSICAL REVIEW LETTERS
week ending
7 JULY 2006
019903-3
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