Gamma-Ray Spectroscopy in Lambda Hypernuclei

Abstract

The present status of hypernuclear gamma-ray spectroscopy with Hyperball is summarized. We observed two gamma transitions of 16-Lambda-O(1- -> 1-,0-) and obtained the strength of the Lambda-N tensor force. In 10B(K-,pi- gamma) data, we did not observe the spin-flip M1 transition of 10-Lambda-B(2- -> 1-), but gamma rays from hyperfragments such as 7-Lambda-Li(7/2+ -> 5/2+) and 9-Lambda-Be(3/2+ ->1/2+) were observed. In 11B(pi+,K+ gamma) data, we observed six gamma transitions of 11_Lambda-B. We also attempted an inclusive gamma-ray measurement with stopped K- beam.

10 pages, 9 figures, 8th International Conference on Hypernuclear and Strange Particle Physics (HYP2003), Newport News, Virginia, 14-18 Oct 2003, to appear in Nuclear Physics A

Cited by in corpus (27)

• Strangeness in nuclear physics
• Baryon-baryon interactions in the SU6 quark model and their applications to light nuclear systems
• High Resolution Spectroscopic Study of ${}_{\Lambda }^{10}$Be
• Charge symmetry breaking in $\Lambda$ hypernuclei revisited
• Mean field approaches for ${\Xi }^{-}$ hypernuclei and current experimental data
• Possible lightest $\Xi$ Hypernucleus with Modern $\Xi N$ Interactions
• Gamma-Ray Spectroscopy of ${}_{\Lambda }^{16}$O and ${}_{\Lambda }^{15}$N Hypernuclei via the ${}^{16}$O$(K^{-},{\pi }^{-})$ reaction
• Hypernuclear spectroscopy with K${}^{-}$ at rest on ${}^7$Li, ${}^9$Be, ${}^{13}$C and ${}^{16}$O
• Microscopic particle-rotor model for low-lying spectrum of Lambda hypernuclei
• Hadron Physics at J-PARC
• New effective interactions for hypernuclei in density dependent relativistic mean field model
• Generator coordinate method for hypernuclear spectroscopy with a covariant density functional
• Container structure of alpha alpha Lambda clusters in ${}_{\Lambda }^9$Be
• Effects of hyperonic many-body force on $B_{\Lambda }$ values of hypernuclei
• Low-lying level structure of $\Lambda$ hypernuclei and spin dependence of $\Lambda N$ interaction with antisymmetrized molecular dynamics
• Relation between shrinkage effect and compression of rotational spectrum in ${}_{\Lambda }^7$Li hypernucleus
• Application of random phase approximation to vibrational excitations of double-$\Lambda$ hypernuclei
• Structure of p-shell hypernuclei
• Sensitivity of Λ single-particle energies to the ΛN spin-orbit coupling and to nuclear core structure in p-shell and sd-shell hypernuclei
• Lambda alpha, Sigma alpha and Xi alpha potentials derived from the SU6 quark-model baryon-baryon interaction
• Sum rule approach to a soft dipole mode in $\Lambda$ hypernuclei
• Cluster structures of the $0^{+}$ states of ${}_{\Lambda }^{13}\mathrm{C}$ with the 3$\alpha +\Lambda$ four-body orthogonality condition model
• Charge symmetry breaking in light $\Lambda$ hypernuclei
• A particle-hole model approach for hypernuclei
• Coupled-channel calculation of bound and resonant spectra of Lambda-9Be and Lambda-13C hypernuclei
• Charge symmetry breaking in $\Lambda$ hypernuclei: updated HYP 2015 progress report
• Structure of the ground and excited states in ${}_{\Lambda }^9$Be nucleus