Zobrazeno 1 - 6
of 6
pro vyhledávání: '"Humphrey K"'
Autor:
Trines, R. M. G. M., Alves, E. P., Humphrey, K. A., Bingham, R., Cairns, R. A., Fiuza, F., Fonseca, R. A., Silva, L. O., Norreys, P. A.
Raman and Brillouin amplification of laser pulses in plasma have been shown to produce picosecond pulses of petawatt power. In previous studies, filamentation of the probe pulse has been identified as the biggest threat to the amplification process,
Externí odkaz:
http://arxiv.org/abs/1406.5424
Publikováno v:
Eur.Phys.J.C9:313-317,1999
Corrections to the exact heavy--quark symmetry results are expected to follow the $1/m_{Q}$ mass effect of the heavy--quark. We show, by an explicit calculation, that there is something other than the mass effect that suppresses the breaking of the s
Externí odkaz:
http://arxiv.org/abs/hep-ph/9604384
Publikováno v:
Phys.Rev.D52:3966-3977,1995
We study the form factors of heavy--to--heavy and heavy--to--light weak decays using the light--front relativistic quark model. For the heavy--to--heavy $B \ra D^{(\ast)}$ semileptonic decays we calculate the corresponding Isgur--Wise function for th
Externí odkaz:
http://arxiv.org/abs/hep-ph/9503260
We derive general relations among hadronic form factors involving one heavy meson $b\bar{q}$ and another, not necessarily heavy, meson $Q\bar{q}$. The relations are valid to all orders of mass corrections of $m_Q$ .
Comment: 11 pages, UTPT-93-16
Comment: 11 pages, UTPT-93-16
Externí odkaz:
http://arxiv.org/abs/hep-ph/9307288
Publikováno v:
Phys.Rev. D48 (1993) 2145-2151
Efforts to predict the rare exclusive decay $B\to K^{\ast}\gamma$ from the well known inclusive decay $b\to s\gamma$ are frustrated by the effect of the large recoil momentum. We show how to reduce the large uncertainty in calculating this decay by r
Externí odkaz:
http://arxiv.org/abs/hep-ph/9301278
We show that the exclusive decay $B\rightarrow K^{\ast}\gamma$ can be related to the semileptonic decay $B\rightarrow\rho e\bar{\nu}$ using heavy-quark symmetry and $SU(3)$ flavor symmetry. A direct measurement of the $q^{2}$-spectrum for the semilep
Externí odkaz:
http://arxiv.org/abs/hep-ph/9209249