Experimental observation of the Σ hypernuclei, Σ6H and Σ16C

H. Piekarz; S. Bart; R. Hackenburg; A. D. Hancock; E. V. Hungerford; B. Mayes; K. Sekharan; J. Piekarz; M. Deutsch; R. E. Chrien; S. Chen; M. LeVine; D. Maurizio; M. May; H. Palevsky; Y. Xu; P. D. Barnes; B. Basslleck; R. Eisenstein; R. Grace; C. Maher; P. Pile; R. Rieder; W. Wharton; R. L. Stearns

doi:10.1016/0370-2693(82)91031-0

Experimental observation of the Σ hypernuclei, _Σ⁶H and _Σ¹⁶C

H. Piekarz, S. Bart, R. Hackenburg, A. D. Hancock, E. V. Hungerford, B. Mayes, K. Sekharan, J. Piekarz, M. Deutsch, R. E. Chrien, S. Chen, M. LeVine, D. Maurizio, M. May, H. Palevsky, Y. Xu, P. D. Barnes, B. Basslleck, R. Eisenstein, R. GraceC. Maher, P. Pile, R. Rieder, W. Wharton, R. L. Stearns

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Abstract

The hypernuclei _Σ⁶H and _Σ¹⁶C were observed by the (K^-, π⁺) reaction on targets of ⁶Li and liquid O, respectively, at 713 MeV/c incident K^- momentum. Structure is seen in _Σ⁶H which may be interpreted in terms of particle-hole excitations similar to the previously observed states in _Λ⁶Li. The inablitity to resolve individual Σ hypernuclear levels in _Σ¹⁶C, due in part to the excitation of non-coherent states as a result of the large momentum transfer of about 130 MeV/c, precludes the extraction of the Σ-nucleus spin-orbit potential strength. The Σ-nucleus well depth appears to be 7 to 10 MeV less than that for the Λ.

Original language	English
Pages (from-to)	428-432
Number of pages	5
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	110
Issue number	6
DOIs	https://doi.org/10.1016/0370-2693(82)91031-0
State	Published - 15 Apr 1982
Externally published	Yes

Bibliographical note

Funding Information:
Bertlm et al. \[1\] have recently reported the observation of structure m the (K-, 7r-) reaction on 9Be near the ~ threshold. This spectrum may be interpreted as extubltmg two narrow states of width smaller than 8 MeV. The possibdlty of narrow Z-hypernu-clear states has led to renewed theoretical interest m the structure and width of such levels, with the hope of obtaining hyperon-nuclear potential reformation simdar to that extracted from the now well studied A-hypernuclel \[2-6\].I n order to verify and expand the knowledge of 1C hypernuclel the Brookhaven hypernu- ¢~ Research supported by the US DOE under Contracts DE AS05-76ERO-3948, DE-AC02-76CHO-0016, DEAC02-76ERO-3244, and ED-AC02-77ERO-4195.

Funding

Bertlm et al. \[1\] have recently reported the observation of structure m the (K-, 7r-) reaction on 9Be near the ~ threshold. This spectrum may be interpreted as extubltmg two narrow states of width smaller than 8 MeV. The possibdlty of narrow Z-hypernu-clear states has led to renewed theoretical interest m the structure and width of such levels, with the hope of obtaining hyperon-nuclear potential reformation simdar to that extracted from the now well studied A-hypernuclel \[2-6\].I n order to verify and expand the knowledge of 1C hypernuclel the Brookhaven hypernu- ¢~ Research supported by the US DOE under Contracts DE AS05-76ERO-3948, DE-AC02-76CHO-0016, DEAC02-76ERO-3244, and ED-AC02-77ERO-4195.

Funders	Funder number
U.S. Department of Energy	DEAC02-76ERO-3244, ED-AC02-77ERO-4195, DE AS05-76ERO-3948, DE-AC02-76CHO-0016

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10.1016/0370-2693(82)91031-0

Cite this

Piekarz, H., Bart, S., Hackenburg, R., Hancock, A. D., Hungerford, E. V., Mayes, B., Sekharan, K., Piekarz, J., Deutsch, M., Chrien, R. E., Chen, S., LeVine, M., Maurizio, D., May, M., Palevsky, H., Xu, Y., Barnes, P. D., Basslleck, B., Eisenstein, R., ... Stearns, R. L. (1982). Experimental observation of the Σ hypernuclei, _Σ⁶H and _Σ¹⁶C. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 110(6), 428-432. https://doi.org/10.1016/0370-2693(82)91031-0

@article{1736e2021fbe49b5b164bc8d6798e4fa,

title = "Experimental observation of the Σ hypernuclei, Σ6H and Σ16C",

abstract = "The hypernuclei Σ6H and Σ16C were observed by the (K-, π+) reaction on targets of 6Li and liquid O, respectively, at 713 MeV/c incident K- momentum. Structure is seen in Σ6H which may be interpreted in terms of particle-hole excitations similar to the previously observed states in Λ6Li. The inablitity to resolve individual Σ hypernuclear levels in Σ16C, due in part to the excitation of non-coherent states as a result of the large momentum transfer of about 130 MeV/c, precludes the extraction of the Σ-nucleus spin-orbit potential strength. The Σ-nucleus well depth appears to be 7 to 10 MeV less than that for the Λ.",

author = "H. Piekarz and S. Bart and R. Hackenburg and Hancock, {A. D.} and Hungerford, {E. V.} and B. Mayes and K. Sekharan and J. Piekarz and M. Deutsch and Chrien, {R. E.} and S. Chen and M. LeVine and D. Maurizio and M. May and H. Palevsky and Y. Xu and Barnes, {P. D.} and B. Basslleck and R. Eisenstein and R. Grace and C. Maher and P. Pile and R. Rieder and W. Wharton and Stearns, {R. L.}",

note = "Funding Information: Bertlm et al. \[1\] have recently reported the observation of structure m the (K-, 7r-) reaction on 9Be near the ~ threshold. This spectrum may be interpreted as extubltmg two narrow states of width smaller than 8 MeV. The possibdlty of narrow Z-hypernu-clear states has led to renewed theoretical interest m the structure and width of such levels, with the hope of obtaining hyperon-nuclear potential reformation simdar to that extracted from the now well studied A-hypernuclel \[2-6\].I n order to verify and expand the knowledge of 1C hypernuclel the Brookhaven hypernu- ¢~ Research supported by the US DOE under Contracts DE AS05-76ERO-3948, DE-AC02-76CHO-0016, DEAC02-76ERO-3244, and ED-AC02-77ERO-4195.",

year = "1982",

month = apr,

day = "15",

doi = "10.1016/0370-2693(82)91031-0",

language = "אנגלית",

volume = "110",

pages = "428--432",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier",

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Piekarz, H, Bart, S, Hackenburg, R, Hancock, AD, Hungerford, EV, Mayes, B, Sekharan, K, Piekarz, J, Deutsch, M, Chrien, RE, Chen, S, LeVine, M, Maurizio, D, May, M, Palevsky, H, Xu, Y, Barnes, PD, Basslleck, B, Eisenstein, R, Grace, R, Maher, C, Pile, P, Rieder, R, Wharton, W & Stearns, RL 1982, 'Experimental observation of the Σ hypernuclei, _Σ⁶H and _Σ¹⁶C', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 110, no. 6, pp. 428-432. https://doi.org/10.1016/0370-2693(82)91031-0

TY - JOUR

T1 - Experimental observation of the Σ hypernuclei, Σ6H and Σ16C

AU - Piekarz, H.

AU - Bart, S.

AU - Hackenburg, R.

AU - Hancock, A. D.

AU - Hungerford, E. V.

AU - Mayes, B.

AU - Sekharan, K.

AU - Piekarz, J.

AU - Deutsch, M.

AU - Chrien, R. E.

AU - Chen, S.

AU - LeVine, M.

AU - Maurizio, D.

AU - May, M.

AU - Palevsky, H.

AU - Xu, Y.

AU - Barnes, P. D.

AU - Basslleck, B.

AU - Eisenstein, R.

AU - Grace, R.

AU - Maher, C.

AU - Pile, P.

AU - Rieder, R.

AU - Wharton, W.

AU - Stearns, R. L.

N1 - Funding Information: Bertlm et al. \[1\] have recently reported the observation of structure m the (K-, 7r-) reaction on 9Be near the ~ threshold. This spectrum may be interpreted as extubltmg two narrow states of width smaller than 8 MeV. The possibdlty of narrow Z-hypernu-clear states has led to renewed theoretical interest m the structure and width of such levels, with the hope of obtaining hyperon-nuclear potential reformation simdar to that extracted from the now well studied A-hypernuclel \[2-6\].I n order to verify and expand the knowledge of 1C hypernuclel the Brookhaven hypernu- ¢~ Research supported by the US DOE under Contracts DE AS05-76ERO-3948, DE-AC02-76CHO-0016, DEAC02-76ERO-3244, and ED-AC02-77ERO-4195.

PY - 1982/4/15

Y1 - 1982/4/15

N2 - The hypernuclei Σ6H and Σ16C were observed by the (K-, π+) reaction on targets of 6Li and liquid O, respectively, at 713 MeV/c incident K- momentum. Structure is seen in Σ6H which may be interpreted in terms of particle-hole excitations similar to the previously observed states in Λ6Li. The inablitity to resolve individual Σ hypernuclear levels in Σ16C, due in part to the excitation of non-coherent states as a result of the large momentum transfer of about 130 MeV/c, precludes the extraction of the Σ-nucleus spin-orbit potential strength. The Σ-nucleus well depth appears to be 7 to 10 MeV less than that for the Λ.

AB - The hypernuclei Σ6H and Σ16C were observed by the (K-, π+) reaction on targets of 6Li and liquid O, respectively, at 713 MeV/c incident K- momentum. Structure is seen in Σ6H which may be interpreted in terms of particle-hole excitations similar to the previously observed states in Λ6Li. The inablitity to resolve individual Σ hypernuclear levels in Σ16C, due in part to the excitation of non-coherent states as a result of the large momentum transfer of about 130 MeV/c, precludes the extraction of the Σ-nucleus spin-orbit potential strength. The Σ-nucleus well depth appears to be 7 to 10 MeV less than that for the Λ.

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