by Sumihama, M, Adachi, I, Ahn, J. K., Aihara, H, Al Said, S, Asner, D. M., Atmacan, H, Aushev, T, Ayad, R, Babu, V, Badhrees, I, Bahinipati, S, Bakich, A. M., Bansal, V, Beleño, C, Berger, M, Bhardwaj, V, Bhuyan, B, Bilka, T, Biswal, J, Bonvicini, G, Bozek, A, Bračko, M, Browder, T. E., Červenkov, D, Chekelian, V, Chen, A, Cheon, B. G., Chilikin, K, Cho, K, Choi, S.-K., Choi, Y, Choudhury, S, Cinabro, D, Cunliffe, S, Czank, T, Dash, N, Di Carlo, S and Dole\vzal, Z, Dong, T. V., Drásal, Z, Eidelman, S, Epifanov, D, Fast, J. E., Fulsom, B. G., Garg, R, Gaur, V, Gabyshev, N, Garmash, A, Gelb, M, Giri, A, Goldenzweig, P, Guido, E, Haba, J, Hayasaka, K, Hayashii, H, Hirose, S, Hou, W.-S., Inami, K, Inguglia, G, Ishikawa, A, Itoh, R, Iwasaki, M., Iwasaki, Y, Jacobs, W. W., Jeon, H. B., Jia, S, Jin, Y, Joo, K. K., Julius, T, Kaliyar, A. B., Kang, K. H., Karyan, G, Kato, Y, Kiesling, C, Kim, D. Y., Kim, J. B., Kim, K. T., Kim, S. H., Kinoshita, K, Kodyš, P, Korpar, S, Kotchetkov, D, Kri\vzan, P, Kroeger, R, Krokovny, P, Kumar, R, Kuzmin, A, Kwon, Y.-J., Lange, J. S., Lee, I. S., Lee, S. C., Li, L. K., Li, Y. B., Li Gioi, L, Libby, J, Liventsev, D, Lubej, M, Luo, T, Masuda, M, Matsuda, T, Matvienko, D, Merola, M, Miyabayashi, K, Miyata, H, Mizuk, R, Mohanty, G. B., Moon, H. K., Mori, T, Mussa, R, Nakano, E., Nakano, T, Nakao, M, Nanut, T, Nath, K. J., Natkaniec, Z, Niiyama, M, Nisar, N. K., Nishida, S, Ono, H, Pakhlov, P, Pakhlova, G, Pal, B, Pardi, S, Park, H, Paul, S, Pedlar, T. K., Pestotnik, R, Piilonen, L. E., Popov, V, Ritter, M, Russo, G, Sahoo, D, Sandilya, S, Santelj, L, Sanuki, T, Savinov, V, Schneider, O, Schnell, G, Schwanda, C, Seino, Y, Senyo, K, Sevior, M. E., Shebalin, V, Shen, C. P., Shibata, T.-A., Shiu, J.-G., Shwartz, B, Simon, F, Sokolov, A, Solovieva, E, Starič, M, Strube, J. F., Sumiyoshi, T, Takizawa, M, Tamponi, U, Tanida, K, Taniguchi, N, Tenchini, F, Uchida, M, Uglov, T, Uno, S, Urquijo, P, Vahsen, S. E., Van Hulse, C, Varner, G, Vorobyev, V, Vossen, A, Wang, B., Wang, C. H., Wang, M.-Z., Wang, P., Wang, X. L., Watanabe, M, Watanuki, S, Widmann, E, Won, E, Ye, H, Yelton, J, Yuan, C. Z., Yusa, Y, Zakharov, S, Zhang, Z. P., Zhilich, V, Zhukova, V and Zhulanov, V
Abstract:
We report the first observation of the doubly-strange baryon $\Xi(1620)^0$ in its decay to $\Xi^-\pi^+$ via $\Xi_c^+ \rightarrow \Xi^- \pi^+ \pi^+$ decays based on a $980\,{\rm fb}^{-1}$ data sample collected with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider. The mass and width are measured to be 1610.4 $\pm$ 6.0 (stat) $^{+5.9}_{-3.5}$ (syst)$\sim$MeV$/c^2$ and 59.9 $\pm$ 4.8 (stat) $^{+2.8}_{-3.0}$ (syst)$\sim$MeV, respectively. We obtain 4.0$\sigma$ evidence of the $\Xi(1690)^0$ with the same data sample. These results shed light on the structure of hyperon resonances with strangeness $S=-2$.
Reference:
Sumihama, M, Adachi, I, Ahn, J. K., Aihara, H, Al Said, S, Asner, D. M., Atmacan, H, Aushev, T, Ayad, R, Babu, V, Badhrees, I, Bahinipati, S, Bakich, A. M., Bansal, V, Beleño, C, Berger, M, Bhardwaj, V, Bhuyan, B, Bilka, T, Biswal, J, Bonvicini, G, Bozek, A, Bračko, M, Browder, T. E., Červenkov, D, Chekelian, V, Chen, A, Cheon, B. G., Chilikin, K, Cho, K, Choi, S.-K., Choi, Y, Choudhury, S, Cinabro, D, Cunliffe, S, Czank, T, Dash, N, Di Carlo, S and Dole\vzal, Z, Dong, T. V., Drásal, Z, Eidelman, S, Epifanov, D, Fast, J. E., Fulsom, B. G., Garg, R, Gaur, V, Gabyshev, N, Garmash, A, Gelb, M, Giri, A, Goldenzweig, P, Guido, E, Haba, J, Hayasaka, K, Hayashii, H, Hirose, S, Hou, W.-S., Inami, K, Inguglia, G, Ishikawa, A, Itoh, R, Iwasaki, M., Iwasaki, Y, Jacobs, W. W., Jeon, H. B., Jia, S, Jin, Y, Joo, K. K., Julius, T, Kaliyar, A. B., Kang, K. H., Karyan, G, Kato, Y, Kiesling, C, Kim, D. Y., Kim, J. B., Kim, K. T., Kim, S. H., Kinoshita, K, Kodyš, P, Korpar, S, Kotchetkov, D, Kri\vzan, P, Kroeger, R, Krokovny, P, Kumar, R, Kuzmin, A, Kwon, Y.-J., Lange, J. S., Lee, I. S., Lee, S. C., Li, L. K., Li, Y. B., Li Gioi, L, Libby, J, Liventsev, D, Lubej, M, Luo, T, Masuda, M, Matsuda, T, Matvienko, D, Merola, M, Miyabayashi, K, Miyata, H, Mizuk, R, Mohanty, G. B., Moon, H. K., Mori, T, Mussa, R, Nakano, E., Nakano, T, Nakao, M, Nanut, T, Nath, K. J., Natkaniec, Z, Niiyama, M, Nisar, N. K., Nishida, S, Ono, H, Pakhlov, P, Pakhlova, G, Pal, B, Pardi, S, Park, H, Paul, S, Pedlar, T. K., Pestotnik, R, Piilonen, L. E., Popov, V, Ritter, M, Russo, G, Sahoo, D, Sandilya, S, Santelj, L, Sanuki, T, Savinov, V, Schneider, O, Schnell, G, Schwanda, C, Seino, Y, Senyo, K, Sevior, M. E., Shebalin, V, Shen, C. P., Shibata, T.-A., Shiu, J.-G., Shwartz, B, Simon, F, Sokolov, A, Solovieva, E, Starič, M, Strube, J. F., Sumiyoshi, T, Takizawa, M, Tamponi, U, Tanida, K, Taniguchi, N, Tenchini, F, Uchida, M, Uglov, T, Uno, S, Urquijo, P, Vahsen, S. E., Van Hulse, C, Varner, G, Vorobyev, V, Vossen, A, Wang, B., Wang, C. H., Wang, M.-Z., Wang, P., Wang, X. L., Watanabe, M, Watanuki, S, Widmann, E, Won, E, Ye, H, Yelton, J, Yuan, C. Z., Yusa, Y, Zakharov, S, Zhang, Z. P., Zhilich, V, Zhukova, V and Zhulanov, V, "Observation of $\Xi(1620)^0$ and evidence for $\Xi(1690)^0$ in $\Xi_c^+ \rightarrow \Xi^-\pi^+\pi^+$ decays", Physical Review Letters, vol. 122, no. 7, pp. 072501, 2019.
Bibtex Entry:
@article{Sumihama2019,
abstract = {We report the first observation of the doubly-strange baryon $\Xi(1620)^0$ in its decay to $\Xi^-\pi^+$ via $\Xi_c^+ \rightarrow \Xi^- \pi^+ \pi^+$ decays based on a $980\,{\rm fb}^{-1}$ data sample collected with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider. The mass and width are measured to be 1610.4 $\pm$ 6.0 (stat) $^{+5.9}_{-3.5}$ (syst)$\sim$MeV$/c^2$ and 59.9 $\pm$ 4.8 (stat) $^{+2.8}_{-3.0}$ (syst)$\sim$MeV, respectively. We obtain 4.0$\sigma$ evidence of the $\Xi(1690)^0$ with the same data sample. These results shed light on the structure of hyperon resonances with strangeness $S=-2$.},
author = {Sumihama, M and Adachi, I and Ahn, J. K. and Aihara, H and {Al Said}, S and Asner, D. M. and Atmacan, H and Aushev, T and Ayad, R and Babu, V and Badhrees, I and Bahinipati, S and Bakich, A. M. and Bansal, V and Bele{\~{n}}o, C and Berger, M and Bhardwaj, V and Bhuyan, B and Bilka, T and Biswal, J and Bonvicini, G and Bozek, A and Bra{\v{c}}ko, M and Browder, T. E. and {\v{C}}ervenkov, D and Chekelian, V and Chen, A and Cheon, B. G. and Chilikin, K and Cho, K and Choi, S.-K. and Choi, Y and Choudhury, S and Cinabro, D and Cunliffe, S and Czank, T and Dash, N and {Di Carlo}, S and Dole{\v{z}}al, Z and Dong, T. V. and Dr{\'{a}}sal, Z and Eidelman, S and Epifanov, D and Fast, J. E. and Fulsom, B. G. and Garg, R and Gaur, V and Gabyshev, N and Garmash, A and Gelb, M and Giri, A and Goldenzweig, P and Guido, E and Haba, J and Hayasaka, K and Hayashii, H and Hirose, S and Hou, W.-S. and Inami, K and Inguglia, G and Ishikawa, A and Itoh, R and Iwasaki, M. and Iwasaki, Y and Jacobs, W. W. and Jeon, H. B. and Jia, S and Jin, Y and Joo, K. K. and Julius, T and Kaliyar, A. B. and Kang, K. H. and Karyan, G and Kato, Y and Kiesling, C and Kim, D. Y. and Kim, J. B. and Kim, K. T. and Kim, S. H. and Kinoshita, K and Kody{\v{s}}, P and Korpar, S and Kotchetkov, D and Kri{\v{z}}an, P and Kroeger, R and Krokovny, P and Kumar, R and Kuzmin, A and Kwon, Y.-J. and Lange, J. S. and Lee, I. S. and Lee, S. C. and Li, L. K. and Li, Y. B. and {Li Gioi}, L and Libby, J and Liventsev, D and Lubej, M and Luo, T and Masuda, M and Matsuda, T and Matvienko, D and Merola, M and Miyabayashi, K and Miyata, H and Mizuk, R and Mohanty, G. B. and Moon, H. K. and Mori, T and Mussa, R and Nakano, E. and Nakano, T and Nakao, M and Nanut, T and Nath, K. J. and Natkaniec, Z and Niiyama, M and Nisar, N. K. and Nishida, S and Ono, H and Pakhlov, P and Pakhlova, G and Pal, B and Pardi, S and Park, H and Paul, S and Pedlar, T. K. and Pestotnik, R and Piilonen, L. E. and Popov, V and Ritter, M and Russo, G and Sahoo, D and Sandilya, S and Santelj, L and Sanuki, T and Savinov, V and Schneider, O and Schnell, G and Schwanda, C and Seino, Y and Senyo, K and Sevior, M. E. and Shebalin, V and Shen, C. P. and Shibata, T.-A. and Shiu, J.-G. and Shwartz, B and Simon, F and Sokolov, A and Solovieva, E and Stari{\v{c}}, M and Strube, J. F. and Sumiyoshi, T and Takizawa, M and Tamponi, U and Tanida, K and Taniguchi, N and Tenchini, F and Uchida, M and Uglov, T and Uno, S and Urquijo, P and Vahsen, S. E. and {Van Hulse}, C and Varner, G and Vorobyev, V and Vossen, A and Wang, B. and Wang, C. H. and Wang, M.-Z. and Wang, P. and Wang, X. L. and Watanabe, M and Watanuki, S and Widmann, E and Won, E and Ye, H and Yelton, J and Yuan, C. Z. and Yusa, Y and Zakharov, S and Zhang, Z. P. and Zhilich, V and Zhukova, V and Zhulanov, V},
doi = {10.1103/PhysRevLett.122.072501},
issn = {0031-9007},
journal = {Physical Review Letters},
keywords = {Nuclear Physics},
month = {feb},
number = {7},
pages = {072501},
title = {{Observation of $\Xi(1620)^0$ and evidence for $\Xi(1690)^0$ in $\Xi_c^+ \rightarrow \Xi^-\pi^+\pi^+$ decays}},
url = {https://link.aps.org/doi/10.1103/PhysRevLett.122.072501},
volume = {122},
year = {2019}
}