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Excitation Spectra of the ${}^{12}{\rm C}(p,d)$ Reaction near the $η'$-Meson Emission Threshold Measured in Coincidence with High-Momentum Protons

Fuente: arXiv

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Detalles Bibliográficos
Autores principales:	Sekiya, R., Itahashi, K., Tanaka, Y. K., Hirenzaki, S., Ikeno, N., Metag, V., Nanova, M., Yamagata-Sekihara, J., Drozd, V., Ekawa, H., Geissel, H., Haettner, E., Kasagi, A., Liu, E., Nakagawa, M., Purushothaman, S., Rappold, C., Saito, T. R., Alfaki, H. Alibrahim, Amjad, F., Armstrong, M., Behr, K. -H., Benlliure, J., Brencic, Z., Dickel, T., Dubey, S., Escrig, S., Feijoo-Fontán, M., Fujioka, H., Gao, Y., Goldenbaum, F., González, A. Graña, Harakeh, M. N., He, Y., Heggen, H., Hornung, C., Hubbard, N., Iwasaki, M., Kalantar-Nayestanaki, N., Kavatsyuk, M., Kazantseva, E., Khreptak, A., Kindler, B., Kollmus, H., Kostyleva, D., Kraft-Bermuth, S., Kurz, N., Lommel, B., Minami, S., Morrissey, D. J., Moskal, P., Mukha, I., Nociforo, C., Ong, H. J., Pietri, S., Rocco, E., Rodríguez-Sánchez, J. L., Roy, P., Ruber, R., Schadmand, S., Scheidenberger, C., Schwarz, P., Serdyuk, V., Skurzok, M., Streicher, B., Suzuki, K., Szczepanczyk, B., Tang, X., Tortorelli, N., Vencelj, M., Weber, T., Weick, H., Will, M., Wimmer, K., Yamamoto, A., Yanai, A., Zhao, J.
Formato:	Preprint
Publicado:	2025
Materias:	Nuclear Experiment Nuclear Theory
Acceso en línea:	Acceder al recurso
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

_version_	1866912578931785728
author	Sekiya, R. Itahashi, K. Tanaka, Y. K. Hirenzaki, S. Ikeno, N. Metag, V. Nanova, M. Yamagata-Sekihara, J. Drozd, V. Ekawa, H. Geissel, H. Haettner, E. Kasagi, A. Liu, E. Nakagawa, M. Purushothaman, S. Rappold, C. Saito, T. R. Alfaki, H. Alibrahim Amjad, F. Armstrong, M. Behr, K. -H. Benlliure, J. Brencic, Z. Dickel, T. Dubey, S. Escrig, S. Feijoo-Fontán, M. Fujioka, H. Gao, Y. Goldenbaum, F. González, A. Graña Harakeh, M. N. He, Y. Heggen, H. Hornung, C. Hubbard, N. Iwasaki, M. Kalantar-Nayestanaki, N. Kavatsyuk, M. Kazantseva, E. Khreptak, A. Kindler, B. Kollmus, H. Kostyleva, D. Kraft-Bermuth, S. Kurz, N. Lommel, B. Minami, S. Morrissey, D. J. Moskal, P. Mukha, I. Nociforo, C. Ong, H. J. Pietri, S. Rocco, E. Rodríguez-Sánchez, J. L. Roy, P. Ruber, R. Schadmand, S. Scheidenberger, C. Schwarz, P. Serdyuk, V. Skurzok, M. Streicher, B. Suzuki, K. Szczepanczyk, B. Tang, X. Tortorelli, N. Vencelj, M. Weber, T. Weick, H. Will, M. Wimmer, K. Yamamoto, A. Yanai, A. Zhao, J.
author_facet	Sekiya, R. Itahashi, K. Tanaka, Y. K. Hirenzaki, S. Ikeno, N. Metag, V. Nanova, M. Yamagata-Sekihara, J. Drozd, V. Ekawa, H. Geissel, H. Haettner, E. Kasagi, A. Liu, E. Nakagawa, M. Purushothaman, S. Rappold, C. Saito, T. R. Alfaki, H. Alibrahim Amjad, F. Armstrong, M. Behr, K. -H. Benlliure, J. Brencic, Z. Dickel, T. Dubey, S. Escrig, S. Feijoo-Fontán, M. Fujioka, H. Gao, Y. Goldenbaum, F. González, A. Graña Harakeh, M. N. He, Y. Heggen, H. Hornung, C. Hubbard, N. Iwasaki, M. Kalantar-Nayestanaki, N. Kavatsyuk, M. Kazantseva, E. Khreptak, A. Kindler, B. Kollmus, H. Kostyleva, D. Kraft-Bermuth, S. Kurz, N. Lommel, B. Minami, S. Morrissey, D. J. Moskal, P. Mukha, I. Nociforo, C. Ong, H. J. Pietri, S. Rocco, E. Rodríguez-Sánchez, J. L. Roy, P. Ruber, R. Schadmand, S. Scheidenberger, C. Schwarz, P. Serdyuk, V. Skurzok, M. Streicher, B. Suzuki, K. Szczepanczyk, B. Tang, X. Tortorelli, N. Vencelj, M. Weber, T. Weick, H. Will, M. Wimmer, K. Yamamoto, A. Yanai, A. Zhao, J.
contents	The missing mass of the ${}^{12}{\rm C}(p,d)$ reaction has been measured near the $η'$-meson emission threshold in coincidence with a high-momentum proton to selectively collect $η'$-${}^{11}{\rm C}$ mesic nucleus formation events at GSI, Germany. A 2.5 GeV proton excites a carbon nucleus to form an $η'$-mesic nucleus emitting a deuteron forward with an energy of $\sim 1.6$ GeV. The deuteron is momentum-analyzed by the Fragment Separator used as a high-resolution spectrometer to deduce the excitation energy of the residual system. The large-acceptance detector WASA surrounding the target identifies high-momentum protons emitted in the decay of the $η'$-mesic nucleus. The measured semi-exclusive spectrum exhibits structures below the threshold though the statistical significance is limited. The spectrum is fitted by theoretically calculated spectra varying optical-potential parameters of the $η'$-nucleus interaction. The analysis results indicate $η'$-mesic nuclei formation for the real potential depth of $\sim -61$ MeV with a local statistical significance of $3.5 σ$ and, taking into account the look-elsewhere effect, a global significance of $2.1 σ$.
format	Preprint
id	arxiv_https___arxiv_org_abs_2509_07824
institution	arXiv
publishDate	2025
record_format	arxiv
spellingShingle	Excitation Spectra of the ${}^{12}{\rm C}(p,d)$ Reaction near the $η'$-Meson Emission Threshold Measured in Coincidence with High-Momentum Protons Sekiya, R. Itahashi, K. Tanaka, Y. K. Hirenzaki, S. Ikeno, N. Metag, V. Nanova, M. Yamagata-Sekihara, J. Drozd, V. Ekawa, H. Geissel, H. Haettner, E. Kasagi, A. Liu, E. Nakagawa, M. Purushothaman, S. Rappold, C. Saito, T. R. Alfaki, H. Alibrahim Amjad, F. Armstrong, M. Behr, K. -H. Benlliure, J. Brencic, Z. Dickel, T. Dubey, S. Escrig, S. Feijoo-Fontán, M. Fujioka, H. Gao, Y. Goldenbaum, F. González, A. Graña Harakeh, M. N. He, Y. Heggen, H. Hornung, C. Hubbard, N. Iwasaki, M. Kalantar-Nayestanaki, N. Kavatsyuk, M. Kazantseva, E. Khreptak, A. Kindler, B. Kollmus, H. Kostyleva, D. Kraft-Bermuth, S. Kurz, N. Lommel, B. Minami, S. Morrissey, D. J. Moskal, P. Mukha, I. Nociforo, C. Ong, H. J. Pietri, S. Rocco, E. Rodríguez-Sánchez, J. L. Roy, P. Ruber, R. Schadmand, S. Scheidenberger, C. Schwarz, P. Serdyuk, V. Skurzok, M. Streicher, B. Suzuki, K. Szczepanczyk, B. Tang, X. Tortorelli, N. Vencelj, M. Weber, T. Weick, H. Will, M. Wimmer, K. Yamamoto, A. Yanai, A. Zhao, J. Nuclear Experiment Nuclear Theory The missing mass of the ${}^{12}{\rm C}(p,d)$ reaction has been measured near the $η'$-meson emission threshold in coincidence with a high-momentum proton to selectively collect $η'$-${}^{11}{\rm C}$ mesic nucleus formation events at GSI, Germany. A 2.5 GeV proton excites a carbon nucleus to form an $η'$-mesic nucleus emitting a deuteron forward with an energy of $\sim 1.6$ GeV. The deuteron is momentum-analyzed by the Fragment Separator used as a high-resolution spectrometer to deduce the excitation energy of the residual system. The large-acceptance detector WASA surrounding the target identifies high-momentum protons emitted in the decay of the $η'$-mesic nucleus. The measured semi-exclusive spectrum exhibits structures below the threshold though the statistical significance is limited. The spectrum is fitted by theoretically calculated spectra varying optical-potential parameters of the $η'$-nucleus interaction. The analysis results indicate $η'$-mesic nuclei formation for the real potential depth of $\sim -61$ MeV with a local statistical significance of $3.5 σ$ and, taking into account the look-elsewhere effect, a global significance of $2.1 σ$.
title	Excitation Spectra of the ${}^{12}{\rm C}(p,d)$ Reaction near the $η'$-Meson Emission Threshold Measured in Coincidence with High-Momentum Protons
topic	Nuclear Experiment Nuclear Theory
url	https://arxiv.org/abs/2509.07824