Studies of charmed strange baryons in the $\mathrm{\Lambda }D$ final state at Belle

Journal Article · Mon Aug 08 00:00:00 EDT 2016 · Physical Review D

DOI:https://doi.org/10.1103/PhysRevD.94.032002· OSTI ID:1594381

Kato, Y. ^[1]; Iijima, T.; Adachi, I.; Aihara, H.; Asner, D. M.; Aulchenko, V.; Ayad, R.; Badhrees, I.; Bakich, A. M.; Barberio, E.; Behera, P.; Bhardwaj, V.; Bhuyan, B.; Biswal, J.; Bobrov, A.; Bondar, A.; Bonvicini, G.; Bozek, A.; Bračko, M.; Browder, T. E. ; Červenkov, D.; Chekelian, V.; Cheon, B. G.; Chilikin, K.; Chistov, R.; Cho, K.; Chobanova, V.; Choi, S. -K.; Choi, Y.; Cinabro, D.; Dalseno, J.; Danilov, M.; Dash, N.; Di Carlo, S.; Doležal, Z.; Drásal, Z.; Dutta, D.; Eidelman, S.; Epifanov, D.; Farhat, H.; Fast, J. E.; Ferber, T.; Fulsom, B. G.; Gaur, V.; Gabyshev, N.; Garmash, A.; Gillard, R.; Glattauer, R.; Goldenzweig, P.; Grzymkowska, O.; Haba, J.; Hayasaka, K.; Hayashii, H.; Hirose, S.; Hou, W. -S.; Inguglia, G.; Ishikawa, A.; Itoh, R.; Iwasaki, Y.; Jaegle, I.; Joo, K. K.; Julius, T.; Kato, E.; Kiesling, C.; Kim, D. Y.; Kim, J. B.; Kim, K. T.; Kim, S. H.; Kim, Y. J.; Kinoshita, K.; Kodyš, P.; Korpar, S.; Kotchetkov, D.; Križan, P.; Krokovny, P.; Kuhr, T.; Kuzmin, A.; Kwon, Y. -J.; Lange, J. S.; Li, C. H.; Li, H.; Li, L.; Li, Y.; Li Gioi, L.; Libby, J.; Liventsev, D.; Lubej, M.; Luo, T.; Masuda, M.; Matsuda, T.; Matvienko, D.; Miyabayashi, K.; Miyata, H.; Mizuk, R.; Mohanty, G. B.; Mohanty, S.; Moll, A.; Moon, H. K.; Mussa, R.; Nakao, M.; Nanut, T.; Nath, K. J.; Natkaniec, Z.; Nayak, M.; Niiyama, M.; Nishida, S.; Ogawa, S.; Okuno, S.; Olsen, S. L.; Pakhlov, P.; Pakhlova, G.; Pal, B.; Park, C. -S.; Park, H.; Pestotnik, R.; Petrič, M.; Piilonen, L. E.; Pulvermacher, C.; Rauch, J.; Ritter, M.; Rostomyan, A.; Sakai, Y.; Sandilya, S.; Santelj, L.; Sanuki, T.; Savinov, V.; Schlüter, T.; Schneider, O.; Schnell, G.; Schwanda, C.; Seino, Y.; Semmler, D.; Senyo, K.; Seon, O.; Seong, I. S.; Sevior, M. E.; Shen, C. P.; Shibata, T. -A.; Shiu, J. -G.; Sokolov, A.; Solovieva, E.; Starič, M.; Sumihama, M.; Sumiyoshi, T.; Takizawa, M.; Tanida, K.; Tenchini, F.; Trabelsi, K.; Uchida, M.; Uehara, S.; Uglov, T.; Unno, Y.; Uno, S.; Urquijo, P.; Usov, Y.; Varner, G.; Varvell, K. E.; Vorobyev, V.; Wang, C. H.; Wang, P.; Watanabe, M.; Watanabe, Y.; Wehle, S.; Williams, K. M.; Won, E.; Yamaoka, J.; Yamashita, Y.; Yashchenko, S.; Ye, H.; Yelton, J.; Yook, Y.; Yuan, C. Z.; Zhang, Z. P.; Zhilich, V.; Zhukova, V.; Zhulanov, V.; Zupanc, A.

---

1. Virginia Polytechnic Institute and State University

In this report, we discuss the discovery of ${\mathrm{\Xi }}_c(3055{)}^0$ , observed by its decay into the final-state $\mathrm{\Lambda }{D}^0$ , and present the first observation and evidence of the decays of ${\mathrm{\Xi }}_c(3055{)}^{+}$ and ${\mathrm{\Xi }}_c(3080{)}^{+}$ into $\mathrm{\Lambda }{D}^{+}$ . Furthermore, we perform a combined analysis of the $\mathrm{\Lambda }{D}^{+}$ with the ${\mathrm{\Sigma }}_c^{++}{K}^{-}$ and ${\mathrm{\Sigma }}_c^{*++}{K}^{-}$ decay modes to measure the ratios of branching fractions, masses and widths with improved accuracy. We measure the ratios of branching fractions $\mathcal{B}\left({\mathrm{\Xi }}_c\right(3055{)}^{+}\to \mathrm{\Lambda }{D}^{+})/\mathcal{B}({\mathrm{\Xi }}_c(3055{)}^{+}\to {\mathrm{\Sigma }}_c^{++}{K}^{-})=5.09\pm 1.01\pm 0.76$ , $\mathcal{B}\left({\mathrm{\Xi }}_c\right(3080{)}^{+}\to \mathrm{\Lambda }{D}^{+})/\mathcal{B}({\mathrm{\Xi }}_c(3080{)}^{+}\to {\mathrm{\Sigma }}_c^{++}{K}^{-})=1.29\pm 0.30\pm 0.15$ , and $\mathcal{B}\left({\mathrm{\Xi }}_c\right(3080{)}^{+}\to {\mathrm{\Sigma }}_c^{*++}{K}^{-})/\mathcal{B}({\mathrm{\Xi }}_c(3080{)}^{+}\to {\mathrm{\Sigma }}_c^{++}{K}^{-})=1.07\pm 0.27\pm 0.04$ , where the uncertainties are statistical and systematic. The analysis is performed using a $980{\mathrm{fb}}^{-1}$ data sample collected with the Belle detector at the KEKB asymmetric-energy $e^{+}{e}^{-}$ collider.

• Research Organization: Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
• Sponsoring Organization: National Natural Science Foundation of China (NSFC); National Science Foundation (NSF); USDOE; USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
• Contributing Organization: Belle Collaboration
• Grant/Contract Number: SC0009973
• OSTI ID: 1594381
• Alternate ID(s): OSTI ID: 1331732; OSTI ID: 1286310
• Journal Information: Physical Review D, Journal Name: Physical Review D Journal Issue: 3 Vol. 94; ISSN PRVDAQ; ISSN 2470-0010
• Publisher: American Physical Society (APS)
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS