The authors present a study of B decays into semileptonic final states containing charged and neutral D{sub 1}(2420) and D*{sub 2}(2460). The analysis is based on a data sample of 208 fb{sup -1} collected at the {Upsilon}(4S) resonance with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. With a simultaneous fit to four different decay chains, the semileptonic branching fractions are extracted from measurements of the mass difference {Delta}m = m(D**)-m(D) distributions. Product branching fractions are determined to be {Beta}(B{sup +} {yields} D{sub 1}{sup 0}{ell}{sup +}{nu}{sub {ell}}) x {Beta}(D{sub 1}{sup 0} {yields} D*{sup +}{pi}{sup -}) = (2.97 …
continued below
Serving as both a federal and a state depository library, the UNT Libraries Government Documents Department maintains millions of items in a variety of formats. The department is a member of the FDLP Content Partnerships Program and an Affiliated Archive of the National Archives.
Descriptive information to help identify this article.
Follow the links below to find similar items on the Digital Library.
Description
The authors present a study of B decays into semileptonic final states containing charged and neutral D{sub 1}(2420) and D*{sub 2}(2460). The analysis is based on a data sample of 208 fb{sup -1} collected at the {Upsilon}(4S) resonance with the BABAR detector at the PEP-II asymmetric-energy B Factory at SLAC. With a simultaneous fit to four different decay chains, the semileptonic branching fractions are extracted from measurements of the mass difference {Delta}m = m(D**)-m(D) distributions. Product branching fractions are determined to be {Beta}(B{sup +} {yields} D{sub 1}{sup 0}{ell}{sup +}{nu}{sub {ell}}) x {Beta}(D{sub 1}{sup 0} {yields} D*{sup +}{pi}{sup -}) = (2.97 {+-} 0.17 {+-} 0.17) x 10{sup -3}, {Beta}(B{sup +} {yields} D*{sub 2}{sup 0}{ell}{sup +}{nu}{sub {ell}}) x {Beta}(D*{sub 2}{sup 0} {yields} D{sup (*)+} {pi}{sup -}) = (2.29 {+-} 0.23 {+-} 0.21) x 10{sup -3}, {Beta}(B{sup 0} {yields} D{sub 1}{sup -}{ell}{sup +}{nu}{sub {ell}}) x {Beta}(D{sub 1}{sup -} {yields} D*{sup 0}{pi}{sup -}) = (2.78 {+-} 0.24 {+-} 0.25) x 10{sup -3} and {Beta}(B{sup 0} {yields} D*{sub 2}{sup -}{ell}{sup +}{nu}{sub {ell}}) x {Beta}(D*{sub 2}{sup -} {yields} D{sup (*)0} {pi}{sup -}) = (1.77 {+-} 0.26 {+-} 0.11) x 10{sup -3}. In addition they measure the branching ratio {Lambda}(D*{sub 2} {yields} D{pi}{sup 0})/{Lambda}(D*{sub 2} {yields} D{sup (*)}{pi}{sup -}) = 0.62 {+-} 0.03 {+-} 0.02.
This article is part of the following collection of related materials.
Office of Scientific & Technical Information Technical Reports
Reports, articles and other documents harvested from the Office of Scientific and Technical Information.
Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.
Aubert, Bernard; Bona, M.; Karyotakis, Y.; Lees, J. P.; Poireau, V.; Prencipe, E. et al.Measurement of Semileptonic B Decays Into Orbitally-Excited Charm Mesons,
article,
August 7, 2008;
[Menlo Park, California].
(https://digital.library.unt.edu/ark:/67531/metadc893729/:
accessed April 25, 2024),
University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu;
crediting UNT Libraries Government Documents Department.