EPJ Web Conf.
Volume 271, 2022HYP2022 - 14th International Conference on Hypernuclear and Strange Particle Physics
|Number of page(s)||6|
|Section||Production of Strangeness|
|Published online||09 November 2022|
Cross-section measurement of virtual photoproduction of iso-triplet three-body hypernucleus, Λnn
1 Graduate School of Science, Kyoto University, Kyoto 606-8502 Japan
2 Graduate School of Science, Tohoku University, Sendai, Miyagi 980-8578, Japan
3 Department of Physics, Hampton University, Virginia 23668, USA
4 Thomas Jefferson National Accelerator Facility, Newport News, Virginia 23606, USA
5 Department of Physics, University of Virginia, Charlottesville, Virginia 22904, USA
6 Department of Physics & Department of Applied Physics, University of Zagreb, HR-10000 Zagreb, Croatia
7 Physics and Astronomy Department, California State University, Los Angeles, California 90032, USA
8 Department of Physics, The College of William and Mary, Virginia 23185, USA
9 Department of Physics, University of Tennessee, Knoxville, Tennessee 37996, USA
10 INFN, Sezione di Roma, 00185, Rome, Italy
11 Department of Physics, Mississippi State University, Mississippi State, Mississippi 39762, USA
12 Department of Physics, Florida International University, Miami, Florida 33199, USA
13 Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
14 National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824, USA
15 Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
16 Department of Physics, State University of New York, Stony Brook, New York 11794, USA
17 Department of Physics, University of Connecticut, Storrs, Connecticut 06269, USA
18 Istituto Superiore di Sanità, 00161, Rome, Italy
19 Department of Physics, Kent State University, Kent, Ohio 44242, USA
20 Department of Physics, Old Dominion University, Norfolk, Virginia 23529, USA
21 Department of Physics, University of New Hampshire, Durham, New Hampshire 03824, USA
22 Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
23 Department of Physics, Columbia University, New York, New York 10027, USA
24 Department of Physics and Astronomy, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
25 Sapienza University of Rome, I-00185, Rome, Italy
26 Faculty of Mathematics and Physics, University of Ljubljana, 1000 Ljubljana, Slovenia
27 Jožef Stefan Institute, Ljubljana, Slovenia
28 Institut für Kernphysik, Johannes Gutenberg-Universität Mainz, DE-55128 Mainz, Germany
29 Department of Physics, Christopher Newport University, Newport News, Virginia 23606, USA
30 University of Education, Hue University, Hue City, Vietnam
31 Physics Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
32 División de Ciencias y Tecnologia, Universidad Ana G. Méndez, Recinto de Cupey, San Juan 00926, Puerto Rico
33 Department of Physics & Astronomy, Virginia Military Institute, Lexington, Virginia 24450, USA
34 Department of Physics, Syracuse University, New York, New York 10016, USA
35 School of Physics & Astronomy, University of Glasgow, Glasgow, G12 8QQ, Scotland, UK
* e-mail: email@example.com
Published online: 9 November 2022
Missing-mass spectroscopy with the 3H(e, e′K+) reaction was carried out at Jefferson Lab’s (JLab) Hall A in Oct–Nov, 2018. The differential cross section for the 3H(γ∗, K+)Λnn was deduced at ω = Ee − Ee′ = 2.102 GeV and at the forward K+-scattering angle (0° ≤ θγ∗K ≤ 5°) in the laboratory frame. Given typical predicted energies and decay widths, which are (BΛ, Γ) = (−0.25, 0.8) and (−0.55, 4.7) MeV, the cross sections were found to be 11.2 ± 4.8(stat.)+4.1−2.1(sys.) and 18.1 ± 6.8(stat.)+4.2−2.9(sys.) nb/sr, respectively. The obtained result would impose a constraint for interaction models particularly between Λ and neutron by comparing to theoretical calculations.
© The Authors, published by EDP Sciences, 2022
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.