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Title: Observation of the Λ⁷He Hypernucleus by the (e, e'K⁺) Reaction

Abstract

An experiment with a newly developed high-resolution kaon spectrometer and a scattered electron spectrometer with a novel configuration was performed in Hall C at Jefferson Lab. The ground state of a neutron-rich hypernucleus, HeΛ⁷, was observed for the first time with the (e, e'K⁺) reaction with an energy resolution of ~0.6 MeV. This resolution is the best reported to date for hypernuclear reaction spectroscopy. The HeΛ⁷ binding energy supplies the last missing information of the A=7, T=1 hypernuclear isotriplet, providing a new input for the charge symmetry breaking effect of the ΛN potential.

Authors:
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Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1102633
Resource Type:
Publisher's Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Name: Physical Review Letters Journal Volume: 110 Journal Issue: 1; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English

Citation Formats

Nakamura, S. N., Matsumura, A., Okayasu, Y., Seva, T., Rodriguez, V. M., Baturin, P., Yuan, L., Acha, A., Ahmidouch, A., Androic, D., Asaturyan, A., Asaturyan, R., Baker, O. K., Benmokhtar, F., Bosted, P., Carlini, R., Chen, C., Christy, M., Cole, L., Danagoulian, S., Daniel, A., Dharmawardane, V., Egiyan, K., Elaasar, M., Ent, R., Fenker, H., Fujii, Y., Furic, M., Gan, L., Gaskell, D., Gasparian, A., Gibson, E. F., Gogami, T., Gueye, P., Han, Y., Hashimoto, O., Hiyama, E., Honda, D., Horn, T., Hu, B., Hungerford, Ed V., Jayalath, C., Jones, M., Johnston, K., Kalantarians, N., Kanda, H., Kaneta, M., Kato, F., Kato, S., Kawama, D., Keppel, C., Lan, K. J., Luo, W., Mack, D., Maeda, K., Malace, S., Margaryan, A., Marikyan, G., Markowitz, P., Maruta, T., Maruyama, N., Miyoshi, T., Mkrtchyan, A., Mkrtchyan, H., Nagao, S., Navasardyan, T., Niculescu, G., Niculescu, M.-I., Nomura, H., Nonaka, K., Ohtani, A., Oyamada, M., Perez, N., Petkovic, T., Randeniya, S., Reinhold, J., Roche, J., Sato, Y., Segbefia, E. K., Simicevic, N., Smith, G., Song, Y., Sumihama, M., Tadevosyan, V., Takahashi, T., Tang, L., Tsukada, K., Tvaskis, V., Vulcan, W., Wells, S., Wood, S. A., Yan, C., and Zhamkochyan, S. Observation of the Λ⁷He Hypernucleus by the (e, e'K⁺) Reaction. United States: N. p., 2013. Web. doi:10.1103/PhysRevLett.110.012502.
Nakamura, S. N., Matsumura, A., Okayasu, Y., Seva, T., Rodriguez, V. M., Baturin, P., Yuan, L., Acha, A., Ahmidouch, A., Androic, D., Asaturyan, A., Asaturyan, R., Baker, O. K., Benmokhtar, F., Bosted, P., Carlini, R., Chen, C., Christy, M., Cole, L., Danagoulian, S., Daniel, A., Dharmawardane, V., Egiyan, K., Elaasar, M., Ent, R., Fenker, H., Fujii, Y., Furic, M., Gan, L., Gaskell, D., Gasparian, A., Gibson, E. F., Gogami, T., Gueye, P., Han, Y., Hashimoto, O., Hiyama, E., Honda, D., Horn, T., Hu, B., Hungerford, Ed V., Jayalath, C., Jones, M., Johnston, K., Kalantarians, N., Kanda, H., Kaneta, M., Kato, F., Kato, S., Kawama, D., Keppel, C., Lan, K. J., Luo, W., Mack, D., Maeda, K., Malace, S., Margaryan, A., Marikyan, G., Markowitz, P., Maruta, T., Maruyama, N., Miyoshi, T., Mkrtchyan, A., Mkrtchyan, H., Nagao, S., Navasardyan, T., Niculescu, G., Niculescu, M.-I., Nomura, H., Nonaka, K., Ohtani, A., Oyamada, M., Perez, N., Petkovic, T., Randeniya, S., Reinhold, J., Roche, J., Sato, Y., Segbefia, E. K., Simicevic, N., Smith, G., Song, Y., Sumihama, M., Tadevosyan, V., Takahashi, T., Tang, L., Tsukada, K., Tvaskis, V., Vulcan, W., Wells, S., Wood, S. A., Yan, C., & Zhamkochyan, S. Observation of the Λ⁷He Hypernucleus by the (e, e'K⁺) Reaction. United States. doi:10.1103/PhysRevLett.110.012502.
Nakamura, S. N., Matsumura, A., Okayasu, Y., Seva, T., Rodriguez, V. M., Baturin, P., Yuan, L., Acha, A., Ahmidouch, A., Androic, D., Asaturyan, A., Asaturyan, R., Baker, O. K., Benmokhtar, F., Bosted, P., Carlini, R., Chen, C., Christy, M., Cole, L., Danagoulian, S., Daniel, A., Dharmawardane, V., Egiyan, K., Elaasar, M., Ent, R., Fenker, H., Fujii, Y., Furic, M., Gan, L., Gaskell, D., Gasparian, A., Gibson, E. F., Gogami, T., Gueye, P., Han, Y., Hashimoto, O., Hiyama, E., Honda, D., Horn, T., Hu, B., Hungerford, Ed V., Jayalath, C., Jones, M., Johnston, K., Kalantarians, N., Kanda, H., Kaneta, M., Kato, F., Kato, S., Kawama, D., Keppel, C., Lan, K. J., Luo, W., Mack, D., Maeda, K., Malace, S., Margaryan, A., Marikyan, G., Markowitz, P., Maruta, T., Maruyama, N., Miyoshi, T., Mkrtchyan, A., Mkrtchyan, H., Nagao, S., Navasardyan, T., Niculescu, G., Niculescu, M.-I., Nomura, H., Nonaka, K., Ohtani, A., Oyamada, M., Perez, N., Petkovic, T., Randeniya, S., Reinhold, J., Roche, J., Sato, Y., Segbefia, E. K., Simicevic, N., Smith, G., Song, Y., Sumihama, M., Tadevosyan, V., Takahashi, T., Tang, L., Tsukada, K., Tvaskis, V., Vulcan, W., Wells, S., Wood, S. A., Yan, C., and Zhamkochyan, S. Wed . "Observation of the Λ⁷He Hypernucleus by the (e, e'K⁺) Reaction". United States. doi:10.1103/PhysRevLett.110.012502.
@article{osti_1102633,
title = {Observation of the Λ⁷He Hypernucleus by the (e, e'K⁺) Reaction},
author = {Nakamura, S. N. and Matsumura, A. and Okayasu, Y. and Seva, T. and Rodriguez, V. M. and Baturin, P. and Yuan, L. and Acha, A. and Ahmidouch, A. and Androic, D. and Asaturyan, A. and Asaturyan, R. and Baker, O. K. and Benmokhtar, F. and Bosted, P. and Carlini, R. and Chen, C. and Christy, M. and Cole, L. and Danagoulian, S. and Daniel, A. and Dharmawardane, V. and Egiyan, K. and Elaasar, M. and Ent, R. and Fenker, H. and Fujii, Y. and Furic, M. and Gan, L. and Gaskell, D. and Gasparian, A. and Gibson, E. F. and Gogami, T. and Gueye, P. and Han, Y. and Hashimoto, O. and Hiyama, E. and Honda, D. and Horn, T. and Hu, B. and Hungerford, Ed V. and Jayalath, C. and Jones, M. and Johnston, K. and Kalantarians, N. and Kanda, H. and Kaneta, M. and Kato, F. and Kato, S. and Kawama, D. and Keppel, C. and Lan, K. J. and Luo, W. and Mack, D. and Maeda, K. and Malace, S. and Margaryan, A. and Marikyan, G. and Markowitz, P. and Maruta, T. and Maruyama, N. and Miyoshi, T. and Mkrtchyan, A. and Mkrtchyan, H. and Nagao, S. and Navasardyan, T. and Niculescu, G. and Niculescu, M.-I. and Nomura, H. and Nonaka, K. and Ohtani, A. and Oyamada, M. and Perez, N. and Petkovic, T. and Randeniya, S. and Reinhold, J. and Roche, J. and Sato, Y. and Segbefia, E. K. and Simicevic, N. and Smith, G. and Song, Y. and Sumihama, M. and Tadevosyan, V. and Takahashi, T. and Tang, L. and Tsukada, K. and Tvaskis, V. and Vulcan, W. and Wells, S. and Wood, S. A. and Yan, C. and Zhamkochyan, S.},
abstractNote = {An experiment with a newly developed high-resolution kaon spectrometer and a scattered electron spectrometer with a novel configuration was performed in Hall C at Jefferson Lab. The ground state of a neutron-rich hypernucleus, HeΛ⁷, was observed for the first time with the (e, e'K⁺) reaction with an energy resolution of ~0.6 MeV. This resolution is the best reported to date for hypernuclear reaction spectroscopy. The HeΛ⁷ binding energy supplies the last missing information of the A=7, T=1 hypernuclear isotriplet, providing a new input for the charge symmetry breaking effect of the ΛN potential.},
doi = {10.1103/PhysRevLett.110.012502},
journal = {Physical Review Letters},
number = 1,
volume = 110,
place = {United States},
year = {2013},
month = {1}
}

Journal Article:
Free Publicly Available Full Text
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DOI: 10.1103/PhysRevLett.110.012502

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