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Observation of $Ω(2012)^- \to Ξ(1530)\bar{K}$ and measurement of the effective couplings of $Ω(2012)^-$ to $Ξ(1530)\bar{K}$ and $Ξ\bar{K}$

Fuente: arXiv

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Dettagli Bibliografici
Autori principali:	Belle Collaboration, Jia, S., Shen, C. P., Yuan, C. Z., Ahn, J. K., Aihara, H., Asner, D. M., Atmacan, H., Ayad, R., Bahinipati, S., Banerjee, Sw., Bennett, J., Bessner, M., Biswas, D., Bračko, M., Branchini, P., Budano, A., Campajola, M., Chang, M. -C., Cheon, B. G., Cho, H. E., Choi, S. -K., Choi, Y., Choudhury, S., De Pietro, G., Dhamija, R., Di Capua, F., Dingfelder, J., Ecker, P., Epifanov, D., Ferber, T., Ferlewicz, D., Fulsom, B. G., Gaur, V., Garmash, A., Giri, A., Goldenzweig, P., Graziani, E., Greenwald, D., Gudkova, K., Hadjivasiliou, C., Herrmann, D., Hou, W. -S., Ipsita, N., Ishikawa, A., Itoh, R., Iwasaki, M., Jacobs, W. W., Jin, Y., Joo, K. K., Kiesling, C., Kim, D. Y., Kim, K. -H., Kim, Y. -K., Kinoshita, K., Kodyš, P., Korobov, A., Kovalenko, E., Križan, P., Krokovny, P., Kumar, R., Kumara, K., Kumita, T., Kwon, Y. -J., Lam, T., Li, L. K., Li, S. X., Li, Y. B., Liventsev, D., Masuda, M., Matvienko, D., Maurya, S. K., Meier, F., Merola, M., Mizuk, R., Mussa, R., Nakao, M., Natochii, A., Niiyama, M., Nishida, S., Pakhlov, P., Pakhlova, G., Pardi, S., Park, J., Pedlar, T. K., Pestotnik, R., Piilonen, L. E., Podobnik, T., Prencipe, E., Prim, M. T., Russo, G., Sandilya, S., Schnell, G., Schwanda, C., Seino, Y., Senyo, K., Shan, W., Shiu, J. -G., Sokolov, A., Solovieva, E., Starič, M., Sumihama, M., Takizawa, M., Tamponi, U., Tanida, K., Tenchini, F., Unno, Y., Uno, S., Urquijo, P., Usov, Y., Wang, M. -Z., Won, E., Yabsley, B. D., Yan, W., Yelton, J., Yin, J. H., Yuan, L., Zhang, Z. P., Zhilich, V., Zhukova, V.
Natura:	Preprint
Pubblicazione:	2022
Soggetti:	High Energy Physics - Experiment High Energy Physics - Phenomenology
Accesso online:	Acceder al recurso
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_version_	1866912170714857472
author	Belle Collaboration Jia, S. Shen, C. P. Yuan, C. Z. Ahn, J. K. Aihara, H. Asner, D. M. Atmacan, H. Ayad, R. Bahinipati, S. Banerjee, Sw. Bennett, J. Bessner, M. Biswas, D. Bračko, M. Branchini, P. Budano, A. Campajola, M. Chang, M. -C. Cheon, B. G. Cho, H. E. Choi, S. -K. Choi, Y. Choudhury, S. De Pietro, G. Dhamija, R. Di Capua, F. Dingfelder, J. Ecker, P. Epifanov, D. Ferber, T. Ferlewicz, D. Fulsom, B. G. Gaur, V. Garmash, A. Giri, A. Goldenzweig, P. Graziani, E. Greenwald, D. Gudkova, K. Hadjivasiliou, C. Herrmann, D. Hou, W. -S. Ipsita, N. Ishikawa, A. Itoh, R. Iwasaki, M. Jacobs, W. W. Jin, Y. Joo, K. K. Kiesling, C. Kim, D. Y. Kim, K. -H. Kim, Y. -K. Kinoshita, K. Kodyš, P. Korobov, A. Kovalenko, E. Križan, P. Krokovny, P. Kumar, R. Kumara, K. Kumita, T. Kwon, Y. -J. Lam, T. Li, L. K. Li, S. X. Li, Y. B. Liventsev, D. Masuda, M. Matvienko, D. Maurya, S. K. Meier, F. Merola, M. Mizuk, R. Mussa, R. Nakao, M. Natochii, A. Niiyama, M. Nishida, S. Pakhlov, P. Pakhlova, G. Pardi, S. Park, J. Pedlar, T. K. Pestotnik, R. Piilonen, L. E. Podobnik, T. Prencipe, E. Prim, M. T. Russo, G. Sandilya, S. Schnell, G. Schwanda, C. Seino, Y. Senyo, K. Shan, W. Shiu, J. -G. Sokolov, A. Solovieva, E. Starič, M. Sumihama, M. Takizawa, M. Tamponi, U. Tanida, K. Tenchini, F. Unno, Y. Uno, S. Urquijo, P. Usov, Y. Wang, M. -Z. Won, E. Yabsley, B. D. Yan, W. Yelton, J. Yin, J. H. Yuan, L. Zhang, Z. P. Zhilich, V. Zhukova, V.
author_facet	Belle Collaboration Jia, S. Shen, C. P. Yuan, C. Z. Ahn, J. K. Aihara, H. Asner, D. M. Atmacan, H. Ayad, R. Bahinipati, S. Banerjee, Sw. Bennett, J. Bessner, M. Biswas, D. Bračko, M. Branchini, P. Budano, A. Campajola, M. Chang, M. -C. Cheon, B. G. Cho, H. E. Choi, S. -K. Choi, Y. Choudhury, S. De Pietro, G. Dhamija, R. Di Capua, F. Dingfelder, J. Ecker, P. Epifanov, D. Ferber, T. Ferlewicz, D. Fulsom, B. G. Gaur, V. Garmash, A. Giri, A. Goldenzweig, P. Graziani, E. Greenwald, D. Gudkova, K. Hadjivasiliou, C. Herrmann, D. Hou, W. -S. Ipsita, N. Ishikawa, A. Itoh, R. Iwasaki, M. Jacobs, W. W. Jin, Y. Joo, K. K. Kiesling, C. Kim, D. Y. Kim, K. -H. Kim, Y. -K. Kinoshita, K. Kodyš, P. Korobov, A. Kovalenko, E. Križan, P. Krokovny, P. Kumar, R. Kumara, K. Kumita, T. Kwon, Y. -J. Lam, T. Li, L. K. Li, S. X. Li, Y. B. Liventsev, D. Masuda, M. Matvienko, D. Maurya, S. K. Meier, F. Merola, M. Mizuk, R. Mussa, R. Nakao, M. Natochii, A. Niiyama, M. Nishida, S. Pakhlov, P. Pakhlova, G. Pardi, S. Park, J. Pedlar, T. K. Pestotnik, R. Piilonen, L. E. Podobnik, T. Prencipe, E. Prim, M. T. Russo, G. Sandilya, S. Schnell, G. Schwanda, C. Seino, Y. Senyo, K. Shan, W. Shiu, J. -G. Sokolov, A. Solovieva, E. Starič, M. Sumihama, M. Takizawa, M. Tamponi, U. Tanida, K. Tenchini, F. Unno, Y. Uno, S. Urquijo, P. Usov, Y. Wang, M. -Z. Won, E. Yabsley, B. D. Yan, W. Yelton, J. Yin, J. H. Yuan, L. Zhang, Z. P. Zhilich, V. Zhukova, V.
contents	Using $Υ(1S)$, $Υ(2S)$, and $Υ(3S)$ data collected by the Belle detector, we discover a new three-body decay, $Ω(2012)^-\toΞ(1530)\bar K\toΞπ\bar K$, with a significance of 5.2~$σ$. The mass of the $Ω(2012)^-$ is $(2012.5\pm0.7\pm0.5)$ MeV and its effective couplings to $Ξ(1530)\bar{K}$ and $Ξ\bar{K}$ are $(39^{+31}_{-39}\pm9)\times10^{-2}$ and $(1.7\pm0.3\pm0.3)\times10^{-2}$, where the first uncertainties are statistical and the second are systematic. The ratio of the branching fraction for the three-body decay to that for the two-body decay to $Ξ\bar{K}$ is $0.99\pm0.26\pm0.06$, assuming isospin symmetry.
format	Preprint
id	arxiv_https___arxiv_org_abs_2207_03090
institution	arXiv
publishDate	2022
record_format	arxiv
spellingShingle	Observation of $Ω(2012)^- \to Ξ(1530)\bar{K}$ and measurement of the effective couplings of $Ω(2012)^-$ to $Ξ(1530)\bar{K}$ and $Ξ\bar{K}$ Belle Collaboration Jia, S. Shen, C. P. Yuan, C. Z. Ahn, J. K. Aihara, H. Asner, D. M. Atmacan, H. Ayad, R. Bahinipati, S. Banerjee, Sw. Bennett, J. Bessner, M. Biswas, D. Bračko, M. Branchini, P. Budano, A. Campajola, M. Chang, M. -C. Cheon, B. G. Cho, H. E. Choi, S. -K. Choi, Y. Choudhury, S. De Pietro, G. Dhamija, R. Di Capua, F. Dingfelder, J. Ecker, P. Epifanov, D. Ferber, T. Ferlewicz, D. Fulsom, B. G. Gaur, V. Garmash, A. Giri, A. Goldenzweig, P. Graziani, E. Greenwald, D. Gudkova, K. Hadjivasiliou, C. Herrmann, D. Hou, W. -S. Ipsita, N. Ishikawa, A. Itoh, R. Iwasaki, M. Jacobs, W. W. Jin, Y. Joo, K. K. Kiesling, C. Kim, D. Y. Kim, K. -H. Kim, Y. -K. Kinoshita, K. Kodyš, P. Korobov, A. Kovalenko, E. Križan, P. Krokovny, P. Kumar, R. Kumara, K. Kumita, T. Kwon, Y. -J. Lam, T. Li, L. K. Li, S. X. Li, Y. B. Liventsev, D. Masuda, M. Matvienko, D. Maurya, S. K. Meier, F. Merola, M. Mizuk, R. Mussa, R. Nakao, M. Natochii, A. Niiyama, M. Nishida, S. Pakhlov, P. Pakhlova, G. Pardi, S. Park, J. Pedlar, T. K. Pestotnik, R. Piilonen, L. E. Podobnik, T. Prencipe, E. Prim, M. T. Russo, G. Sandilya, S. Schnell, G. Schwanda, C. Seino, Y. Senyo, K. Shan, W. Shiu, J. -G. Sokolov, A. Solovieva, E. Starič, M. Sumihama, M. Takizawa, M. Tamponi, U. Tanida, K. Tenchini, F. Unno, Y. Uno, S. Urquijo, P. Usov, Y. Wang, M. -Z. Won, E. Yabsley, B. D. Yan, W. Yelton, J. Yin, J. H. Yuan, L. Zhang, Z. P. Zhilich, V. Zhukova, V. High Energy Physics - Experiment High Energy Physics - Phenomenology Using $Υ(1S)$, $Υ(2S)$, and $Υ(3S)$ data collected by the Belle detector, we discover a new three-body decay, $Ω(2012)^-\toΞ(1530)\bar K\toΞπ\bar K$, with a significance of 5.2~$σ$. The mass of the $Ω(2012)^-$ is $(2012.5\pm0.7\pm0.5)$ MeV and its effective couplings to $Ξ(1530)\bar{K}$ and $Ξ\bar{K}$ are $(39^{+31}_{-39}\pm9)\times10^{-2}$ and $(1.7\pm0.3\pm0.3)\times10^{-2}$, where the first uncertainties are statistical and the second are systematic. The ratio of the branching fraction for the three-body decay to that for the two-body decay to $Ξ\bar{K}$ is $0.99\pm0.26\pm0.06$, assuming isospin symmetry.
title	Observation of $Ω(2012)^- \to Ξ(1530)\bar{K}$ and measurement of the effective couplings of $Ω(2012)^-$ to $Ξ(1530)\bar{K}$ and $Ξ\bar{K}$
topic	High Energy Physics - Experiment High Energy Physics - Phenomenology
url	https://arxiv.org/abs/2207.03090