First Observation of the p{sub {Lambda}}{r_arrow}s{sub {Lambda}} {gamma}-Ray Transition in {sup 13}{sub {Lambda}}C

Journal Article · Sun Jun 01 04:00:00 EDT 1997 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.78.4343· OSTI ID:548837

May, M; Alburger, D; Bart, S; Chrien, R; Sawafta, R ^[1]; Deutsch, M; Lia, V ^[2]; Wissink, S W; Lisantti, J; Wells, S P; Bowyer, S M; Franklin, W A ^[3]; Hicks, K; Clark, H; Michael, R ^[4]; Lee, L ^[5]; Funsten, H ^[6]; Kormanyos, C; Wise, J ^[7]; Barakat, M B ^[8] ; Stearns, R ^[9]

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1. Brookhaven, National Laboratory, Upton, New York 11973 (United States)
2. Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States)
3. Indiana University Cyclotron Facility, Bloomington, Indiana 47408 (United States)
4. Ohio University, Athens, Ohio 45701 (United States)
5. TRIUMF, Vancouver, BC, V6T 2A3 (Canada)
6. College of William and Mary, Williamsburg, Virginia 23187 (United States)
7. University of Colorado, Boulder, Colorado 80309 (United States)
8. University of Houston, Houston, Texas 77204 (United States)
9. Vassar College, Poughkeepsie, New York 12601 (United States)

The spectrum of excited states in the hypernucleus {sup 13}{sub {Lambda}}C was studied at the Brookhaven Alternate Gradient Synchrotron using the (K{sup -},{pi}{sup -}) reaction on an enriched {sup 13}C target. {gamma} rays coincident with the p{sub 1/2{Lambda}} state were observed using two large sodium iodide detectors. We interpret them as arising from the p{sub 1/2{Lambda}}{r_arrow}s{sub 1/2{Lambda}} transition in {sup 13}{sub {Lambda}}C . This represents the first direct observation of a {gamma} ray associated with the transition of a hyperon between major nuclear shells. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 548837
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 23 Vol. 78; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CARBON 13
EXCITED STATES
GAMMA DECAY
GAMMA RADIATION
HYPERNUCLEI
HYPERONS
SPECTRA
SYNCHROTRONS