SEMILEPTONIC DECAYS OF B-MESONS INTO EXCITED CHARM MESONS - LEADING ORDER AND 1/MC CONTRIBUTIONS

被引:7
作者
MANNEL, T
ROBERTS, W
机构
[1] OLD DOMINION UNIV,DEPT PHYS,NORFOLK,VA 23529
[2] CONTINUOUS ELECTRON BEAM ACCELERATOR FACIL,NEWPORT NEWS,VA 23606
来源
ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS | 1994年 / 61卷 / 02期
关键词
D O I
10.1007/BF01413107
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
We use the heavy quark effective theory to investigate the form factors that describe the semileptonic decays of a B meson into excited daughter mesons. For an excited daughter meson with charm, a single form factor is needed at leading order, while five form factors and two dimensionful constants are needed to order 1/m(c) in the heavy quark expansion. For non-charmed final states, a total of four form factors are needed at leading order. For the process B-->D(*)X l nu, four form factors are also needed at leading order.
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页码:293 / 296
页数:4
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