7,825 research outputs found
Properties of charmed and bottom hadrons in nuclear medium: Results for and hypernuclei
This reports our recent studies on changes in properties of heavy hadrons
containing at least a charm or a bottom quark in nuclear matter, and that the
results for the and hypernuclei are studied
quantitatively. Comparisons are made with the results for the
hypernuclei studied previously in the same approach. It is shown that although
the scalar and vector potentials for the , and
in the hypernuclei multiplet with the same baryon numbers are quite
similar, the wave functions obtained, e.g., for state, are very
different. The probability density distribution in
Pb is much more pushed away from the center than that for
the in Pb due to the Coulomb force. On the contrary,
the probability density distributions in hypernuclei
are much larger near the origin than those for the in the
hypernuclei due to its heavy mass. A possibility of nuclear bound
(atomic) states is also briefly discussed.Comment: 12 pages, 7 embedded figures, uses PTP-Tex environment (all
included), Invited talk presented at YITP-RCNP Workshop on "Chiral
Restoration in Nuclear Medium", October 7-9, 2002, YITP Kyoto University,
Japan, to be published in the proceeding
On radiative muon capture in hydrogen
We analyze photon spectra in the radiative muon capture in hydrogen using
amplitudes derived from chiral Lagrangians. The model can describe the high
energy part of the photon spectra, measured recently at TRIUMF, reasonably
well.Comment: extended version, 31 pages, 7 figures, LaTeX, Feynman, submitted to
Phys. Rev.
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