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K. Zalewski

Publications and source records attributed to K. Zalewski.

41 records · Page 3Linked to original sources
arXiv1998

Spin effects in heavy quarkonia

A model based on a nonrelativistic potential supplemented by spin dependent terms of the Breit-Fermi type is described. This model reproduces the known masses of the $\bar{b}b$ quarkonia within 1MeV and the known masses of the $\bar{c}c$ quarkonia within 5MeV. Many predictions are made, some of them, e.g. for the fine splittings of the high $L$ states of the $\bar{b}b$ quarkonia and of the mass spectrum of the $\bar{b}c$ quarkonia, significantly different from previous predictions made by other authors.

hep-ph↗
arXiv1995

NONRELATIVISTIC MODEL FOR $b\OVERLINE{b}$ QUARKONIA

Experimental data for $b\bar{b}$ quarkonia have been compared with the predictions of a variety of nonrelativistic quark models. It is found that a potential $a\sqrt{r} - b/r +$ const gives good agreement, while many others do not. Some implications of this observation are discussed.

hep-ph↗
arXiv1993

Isgur-Wise Functions from the Mit Bag Model

The Isgur-Wise functions for the ground state to ground state semileptonic decays involving $b \rightarrow c$ transitions are calculated from the (modified) MIT bag model. It is checked that the results for the decays $\overline{B} \rightarrow D l \overlineν$ and $\overline{B} \rightarrow D^* l \overlineν$ agree well with experiment. Predictions for the decays $Λ_b \rightarrow Λ_c l \overlineν$, $\overline{B}_s \rightarrow D_s l \overlineν$ and $\overline{B}_s \rightarrow D^*_s l \overlineν$ are given and discussed.

hep-ph↗
arXiv1993

Complete angular analysis of the decay cascade $B \rightarrow D^{**}( \rightarrow D^*(\rightarrow D π) + π) + W(\rightarrow l ν)$

We develop a general algorithm for describing angular decay distributions in cascade decay chains of arbitrary length. The general algorithm is used to study joint angular decay distributions for the cascade decay $B\rightarrow D^{**}( \rightarrow D^*(\rightarrow D π)+π) + W(\rightarrow lν)$ where the $D^{**}$ is a generic $P$-wave charm meson state. Lepton mass effects are fully incorporated

hep-ph↗