TY - JOUR
T1 - Study of charmless B meson semileptonic decays in an inclusive model
AU - Artuso, Marina
N1 - Funding Information:
The author thanks G. Altarelli, J. Donoghue, N. Is-gur, M. Jezabek, F. Muheim and S. Stone for interesting conversations. This work was supported by the National Science Foundation.
PY - 1993/7/29
Y1 - 1993/7/29
N2 - A precision measurement of Vub will be achieved only when the hadronic matrix element needed to describe the b → u semileptonic decays is modeled in a reliable fashion. In this letter predictions for kinematical variables which are very sensitive to the underlying hadronic dynamics are developed in an inclusive parton model. Particular emphasis will be given to the end-point of the lepton spectrum, which is of crucial importance for the interpretation of present experimental data. It will be shown that this approach gives a value of |Vub/Vcb|2 which can be up to 35% higher than the one quoted in recent reports and in better agreement with previous measurements of excess leptons from charmless B meson semileptonic decays.
AB - A precision measurement of Vub will be achieved only when the hadronic matrix element needed to describe the b → u semileptonic decays is modeled in a reliable fashion. In this letter predictions for kinematical variables which are very sensitive to the underlying hadronic dynamics are developed in an inclusive parton model. Particular emphasis will be given to the end-point of the lepton spectrum, which is of crucial importance for the interpretation of present experimental data. It will be shown that this approach gives a value of |Vub/Vcb|2 which can be up to 35% higher than the one quoted in recent reports and in better agreement with previous measurements of excess leptons from charmless B meson semileptonic decays.
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U2 - 10.1016/0370-2693(93)90574-2
DO - 10.1016/0370-2693(93)90574-2
M3 - Article
AN - SCOPUS:0000597726
SN - 0370-2693
VL - 311
SP - 307
EP - 310
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 1-4
ER -