STI Publications - View Publication Form #16781
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Publication Information
| Title | Search for a bound di-neutron by comparing $^3$He(e,e'p)d and $^3$H(e,e'p)X measurements | ||||
| Abstract | We report on a search for a bound di-neutron by comparing electron-induced proton-knockout (e,e'p) measurements from Helium-3 (3He) and Tritium (3H). The measurements were performed at Jefferson Lab Hall A with a 4.326 GeV electron beam, and kinematics of large momentum transfer ( Q2 approx. 1.9 (GeV/c)2) and xB > 1, to minimize contributions from non quasi-elastic (QE) reaction mechanisms. Analyzing the measured 3He missing mass (Mmiss) and missing energy (Emiss) distributions, we can distinguish the two-body break-up reaction, in which the residual proton-neutron system remains bound as a deuteron. In the 3H mirror case, under the exact same kinematic conditions, we do not identify a signature for a bound di-neutron with similar binding energy to that of the deuteron. We calculate exclusion limits as a function of the di-neutron binding energy and find that, for binding equivalent to the deuteron, the two-body break-up cross section on Tritium is less than 0.9% of that on Helium-3 in | ||||
| Author(s) | Dien Nguyen, Carmel Neuburger, Reynier Cruz Torres, Axel Schmidt  , Douglas Higinbotham, Julian Kahlbow, Peter Monaghan, Eliazer Piasetzky , O. Hen |
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| Publication Date | August 2022 | ||||
| Document Type | Journal Article | ||||
| Primary Institution | Thomas Jefferson National Accelerator Facility, Newport News | ||||
| Affiliation | Exp Nuclear Physics / Experimental Halls / Hall A | ||||
| Funding Source | Nuclear Physics (NP) | ||||
| Proprietary? | No | ||||
| This publication conveys | Technical Science Results | ||||
| Document Numbers |
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| Associated with an experiment | Yes | ||||
| Experiment Number(s) |
E12-14-011
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| Associated with EIC | No | ||||
| Supported by Jefferson Lab LDRD Funding | No |
Journal Article
| Journal Name | Physics Letters B |
| Refereed | Yes |
| Volume | 831 |
| Issue | |
| Page(s) | 137165 |
Attachments/Datasets/DOI Link
| Document(s) |
Di_neutron_paper(1).pdf
(STI Document)
1-s2.0-S0370269322002994-main.pdf
(Accepted Manuscript)
1-s2.0-S0370269322002994-main.pdf
(Accepted Manuscript)
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| DOI Link | |
| Dataset(s) | (none) |
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