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Title: Observation of Ξ ( 1620 ) 0 and Evidence for Ξ ( 1690 ) 0 in Ξ c + Ξ - π + π + Decays

Abstract

We report the first observation of the double strange baryon $$\mathrm{{\Xi}}(1620{)}^{0}$$ in its decay to $${\mathrm{{\Xi}}}^{{-}}{{\pi}}^{+}$$ via $${\mathrm{{\Xi}}}_{c}^{+}{\rightarrow}{\mathrm{{\Xi}}}^{{-}}{{\pi}}^{+}{{\pi}}^{+}$$ decays based on a $$980\text{ }\text{ }{\mathrm{fb}}^{{-}1}$$ data sample collected with the Belle detector at the KEKB asymmetric-energy $${e}^{+}{e}^{{-}}$$ collider. The mass and width are measured to be $$1610.4\pm{}6.0(\text{stat}{)}_{{-}4.2}^{+6.1}\text{ }(\text{syst})\text{ }\text{ }\mathrm{MeV}/{c}^{2}$$ and $$59.9\pm{}4.8(\text{stat}{)}_{{-}7.1}^{+2.8}(\text{syst})\text{ }\text{ }\mathrm{MeV}$$, respectively. We obtain $$4.0{\sigma}$$ evidence of the $$\mathrm{{\Xi}}(1690{)}^{0}$$ with the same data sample. These results shed light on the structure of hyperon resonances with strangeness $$S={-}2$$.

Authors:
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Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States); Univ. of Hawaii, Honolulu, HI (United States); Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP); National Science Foundation (NSF)
Contributing Org.:
Belle Collaboration
OSTI Identifier:
1495586
Alternate Identifier(s):
OSTI ID: 1501589; OSTI ID: 1597969
Report Number(s):
BNL-211366-2019-JAAM
Journal ID: ISSN 0031-9007; PRLTAO; 072501
Grant/Contract Number:  
SC0012704; SC0009973; SC0010504
Resource Type:
Journal Article: Published Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Name: Physical Review Letters Journal Volume: 122 Journal Issue: 7; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; resonance reactions; hyperons

Citation Formats

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., Doležal, 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., Križan, 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., Zhulanov, V., and Belle Collaboration. Observation of Ξ(1620)0 and Evidence for Ξ(1690)0 in Ξc+→Ξ-π+π+ Decays. United States: N. p., 2019. Web. doi:10.1103/PhysRevLett.122.072501.
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., Doležal, 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., Križan, 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., Zhulanov, V., & Belle Collaboration. Observation of Ξ(1620)0 and Evidence for Ξ(1690)0 in Ξc+→Ξ-π+π+ Decays. United States. doi:10.1103/PhysRevLett.122.072501.
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., Doležal, 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., Križan, 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., Zhulanov, V., and Belle Collaboration. Thu . "Observation of Ξ(1620)0 and Evidence for Ξ(1690)0 in Ξc+→Ξ-π+π+ Decays". United States. doi:10.1103/PhysRevLett.122.072501.
@article{osti_1495586,
title = {Observation of Ξ(1620)0 and Evidence for Ξ(1690)0 in Ξc+→Ξ-π+π+ Decays},
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 Beleño, C. and Berger, M. and Bhardwaj, V. and Bhuyan, B. and Bilka, T. and Biswal, J. and Bonvicini, G. and Bozek, A. and Bračko, M. and Browder, T. E. and Červenkov, 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 Doležal, Z. and Dong, T. V. and Drásal, 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 Kodyš, P. and Korpar, S. and Kotchetkov, D. and Križan, 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 Starič, 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. and Belle Collaboration},
abstractNote = {We report the first observation of the double strange baryon $\mathrm{{\Xi}}(1620{)}^{0}$ in its decay to ${\mathrm{{\Xi}}}^{{-}}{{\pi}}^{+}$ via ${\mathrm{{\Xi}}}_{c}^{+}{\rightarrow}{\mathrm{{\Xi}}}^{{-}}{{\pi}}^{+}{{\pi}}^{+}$ decays based on a $980\text{ }\text{ }{\mathrm{fb}}^{{-}1}$ data sample collected with the Belle detector at the KEKB asymmetric-energy ${e}^{+}{e}^{{-}}$ collider. The mass and width are measured to be $1610.4\pm{}6.0(\text{stat}{)}_{{-}4.2}^{+6.1}\text{ }(\text{syst})\text{ }\text{ }\mathrm{MeV}/{c}^{2}$ and $59.9\pm{}4.8(\text{stat}{)}_{{-}7.1}^{+2.8}(\text{syst})\text{ }\text{ }\mathrm{MeV}$, respectively. We obtain $4.0{\sigma}$ evidence of the $\mathrm{{\Xi}}(1690{)}^{0}$ with the same data sample. These results shed light on the structure of hyperon resonances with strangeness $S={-}2$.},
doi = {10.1103/PhysRevLett.122.072501},
journal = {Physical Review Letters},
issn = {0031-9007},
number = 7,
volume = 122,
place = {United States},
year = {2019},
month = {2}
}

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Free Publicly Available Full Text
Publisher's Version of Record at 10.1103/PhysRevLett.122.072501

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Figures / Tables:

FIG. 1 FIG. 1: (a) Themore » $Ξ$$π$$^+_L$ (solid) and $Ξ$$π$$^+_H$(dashed) invariant mass distributions in the $Ξ$$^+_c$ signal region, as well as the cor- responding distributions (hatched) in $Ξ$$^+_c$ sideband region. (b) The Dalitz distribution for $Ξ$$^+_c$ → $Ξ$$π$$^+_H$$π$$^+_L$ . (color online)« less

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    The nature of the resonance in chiral dynamics
    journal, January 2012


    Status of the Belle silicon vertex detector
    journal, May 2006

    • Natkaniec, Z.; Aihara, H.; Asano, Y.
    • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 560, Issue 1
    • DOI: 10.1016/j.nima.2005.11.228

    Ξπ Resonance with mass 1606 MeV/c2
    journal, February 1972


    Strangeness—2 and—3 baryons in a quark model with chromodynamics
    journal, January 1981


    Observation of $\Xi(1620)^0$ and evidence for $\Xi(1690)^0$ in $\Xi_c^+ \rightarrow \Xi^-\pi^+\pi^+$ decays
    text, January 2019


    Ξ and Ω baryons in the Skyrme model
    journal, April 2007


      Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.