Measurement of $\rm ^{6}H$ ground state energy in an electron scattering experiment at MAMI-A1
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866908335625732096 |
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| author | Shao, Tianhao Chen, Jinhui Pochodzalla, Josef Achenbach, Patrick Christmann, Mirco Distler, Michael O. Doria, Luca Esser, Anselm Geratz, Julian Helmel, Christian Hoek, Matthias Kino, Ryoko Klag, Pascal Ma, Yu-Gang Markus, David Merkel, Harald Mihovilovič, Miha Müller, Ulrich Nagao, Sho Nakamura, Satoshi N. Nishi, Kotaro Nishida, Ken Oura, Fumiya Pätschke, Jonas Schlimme, Björn Sören Sfienti, Concettina Steger, Daniel Steinen, Marcell Thiel, Michaela Wilczek, Andrzej Wilhelm, Luca |
| author_facet | Shao, Tianhao Chen, Jinhui Pochodzalla, Josef Achenbach, Patrick Christmann, Mirco Distler, Michael O. Doria, Luca Esser, Anselm Geratz, Julian Helmel, Christian Hoek, Matthias Kino, Ryoko Klag, Pascal Ma, Yu-Gang Markus, David Merkel, Harald Mihovilovič, Miha Müller, Ulrich Nagao, Sho Nakamura, Satoshi N. Nishi, Kotaro Nishida, Ken Oura, Fumiya Pätschke, Jonas Schlimme, Björn Sören Sfienti, Concettina Steger, Daniel Steinen, Marcell Thiel, Michaela Wilczek, Andrzej Wilhelm, Luca |
| contents | For the first time the neutron-rich hydrogen isotope $\rm ^{6}H$ was produced in an electron scattering experiment in the reaction $\rm ^{7}Li(e,~e'pπ^{+})^{6}H$ using the spectrometer facility of the A1 Collaboration at the Mainz Microtron accelerator. By measuring the triple coincidence between the scattered electron, the produced proton, and $π^{+}$, the missing mass spectrum of $\rm ^{6}H$ was obtained. A clear peak above $^3$H+n+n+n energy threshold was seen resulting in a ground state energy of $\rm ^{6}H$ at $2.3\pm0.5({\rm stat.})\pm0.4({\rm syst.})$ MeV with a width of $1.9\pm1.0({\rm stat.})\pm0.4({\rm syst.})$ MeV. This work challenges the understandings of multi-nucleon interactions and presents a new method to study light neutron-rich nuclei with electron scattering experiments. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_01232 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Measurement of $\rm ^{6}H$ ground state energy in an electron scattering experiment at MAMI-A1 Shao, Tianhao Chen, Jinhui Pochodzalla, Josef Achenbach, Patrick Christmann, Mirco Distler, Michael O. Doria, Luca Esser, Anselm Geratz, Julian Helmel, Christian Hoek, Matthias Kino, Ryoko Klag, Pascal Ma, Yu-Gang Markus, David Merkel, Harald Mihovilovič, Miha Müller, Ulrich Nagao, Sho Nakamura, Satoshi N. Nishi, Kotaro Nishida, Ken Oura, Fumiya Pätschke, Jonas Schlimme, Björn Sören Sfienti, Concettina Steger, Daniel Steinen, Marcell Thiel, Michaela Wilczek, Andrzej Wilhelm, Luca Nuclear Experiment Nuclear Theory For the first time the neutron-rich hydrogen isotope $\rm ^{6}H$ was produced in an electron scattering experiment in the reaction $\rm ^{7}Li(e,~e'pπ^{+})^{6}H$ using the spectrometer facility of the A1 Collaboration at the Mainz Microtron accelerator. By measuring the triple coincidence between the scattered electron, the produced proton, and $π^{+}$, the missing mass spectrum of $\rm ^{6}H$ was obtained. A clear peak above $^3$H+n+n+n energy threshold was seen resulting in a ground state energy of $\rm ^{6}H$ at $2.3\pm0.5({\rm stat.})\pm0.4({\rm syst.})$ MeV with a width of $1.9\pm1.0({\rm stat.})\pm0.4({\rm syst.})$ MeV. This work challenges the understandings of multi-nucleon interactions and presents a new method to study light neutron-rich nuclei with electron scattering experiments. |
| title | Measurement of $\rm ^{6}H$ ground state energy in an electron scattering experiment at MAMI-A1 |
| topic | Nuclear Experiment Nuclear Theory |
| url | https://arxiv.org/abs/2501.01232 |