Perturbative QCD and Power Corrected Hadron Spectra and Spectral Moments in the Decays $B \to X_s \ell^+ \ell^-$
| dc.creator | Ali, A. | |
| dc.creator | Hiller, G. | |
| dc.date | 1998-12-18 | |
| dc.date.accessioned | 2026-07-07T04:06:04Z | |
| dc.date.available | 2026-07-07T04:06:04Z | |
| dc.description | Leading order (in $α_s$) perturbative QCD and power ($1/m_b^2)$ corrections to the hadronic invariant mass and hadron energy spectra in the decay $B \to X_s \ell^+ \ell^-$ are reviewed in the standard model using the heavy quark expansion technique (HQET). In particular, the first two hadronic moments $<S_H^n>$ and $<E_H^n>$, $n=1,2$, are presented working out their sensitivity on the HQET parameters $λ_1$ and $\barΛ$. Data from the forthcoming B facilities can be used to measure the short-distance contribution in $B \to X_s \ell^+ \ell^-$ and determine the HQET parameters from the moments $<S_H^n>$. This could be combined with complementary constraints from the decay $B \to X \ell ν_\ell$ to determine these parameters precisely. | |
| dc.description | 7 pages, 3 figures (requires ltwol2e.sty, included). To appear in the Proceedings of the XXIX International Conference on High Energy Physics, Vancouver, B.C., Canada, July 23-29,1998 | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9812431 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9812431 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/48627 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Perturbative QCD and Power Corrected Hadron Spectra and Spectral Moments in the Decays $B \to X_s \ell^+ \ell^-$ | |
| dc.type | text |