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First measurements of absolute branching fractions of the Xi(+)(c) baryon at Belle

Authors
Li, Y. B.Shen, C. P.Adachi, IAhn, J. K.Aihara, H.Al Said, S.Asner, D. M.Atmacan, H.Aushev, T.Ayad, R.Babu, VBakich, A. M.Ban, Y.Bansal, VBehera, P.Beleno, C.Berger, M.Bhardwaj, VBhuyan, B.Bilka, T.Biswal, J.Bobrov, A.Bozek, A.Bracko, M.Browder, T. E.Campajola, M.Cao, L.Cervenkov, D.Chekelian, VChen, A.Cheon, B. G.Chilikin, K.Cho, H. E.Cho, K.Choi, Y.Choudhury, S.Cinabro, D.Cunliffe, S.Di Carlo, S.Dolezal, Z.Dossett, D.Eidelman, S.Epifanov, D.Fast, J. E.Ferber, T.Fulsom, B. G.Garg, R.Gaur, VGabyshev, N.Garmash, A.Giri, A.Goldenzweig, P.Grube, B.Grzymkowska, O.Haba, J.Hara, T.Hayasaka, K.Hayashii, H.Hou, W-SIijima, T.Inami, K.Inguglia, G.Ishikawa, A.Iwasaki, M.Iwasaki, Y.Jacobs, W. W.Jia, S.Jin, Y.Joffe, D.Joo, K. K.Kaliyar, A. B.Karyan, G.Kato, Y.Kawasaki, T.Kichimi, H.Kim, C. H.Kim, D. Y.Kim, H. J.Kim, K. T.Kim, S. H.Kinoshita, K.Kody, P.Korpar, S.Kotchetkov, D.Krizan, P.Kroeger, R.Krokovny, P.Kuhr, T.Kulasiri, R.Kuzmin, A.Kwon, Y-JLalwani, K.Lange, J. S.Lee, I. S.Lee, J. K.Lee, J. Y.Lee, S. C.Li, C. H.Li, L. K.Li Gioi, L.Libby, J.Lieret, K.Liventsev, D.Lu, P-CMacNaughton, J.Masuda, M.Matsuda, T.Matvienko, D.Merola, M.Miyabayashi, K.Miyata, H.Mizuk, R.Mohanty, G. B.Moon, T. J.Mussa, R.Nakao, M.Nath, K. J.Nayak, M.Niiyama, M.Nisar, N. K.Nishida, S.Nishimura, K.Ogawa, S.Ono, H.Onuki, Y.Pakhlov, P.Pakhlova, G.Pal, B.Pardi, S.Park, H.Park, S-HPatra, S.Paul, S.Pedlar, T. K.Pestotnik, R.Piilonen, L. E.Popov, VPrencipe, E.Ritter, M.Rostomyan, A.Russo, G.Sahoo, D.Sakai, Y.Salehi, M.Santelj, L.Sanuki, T.Savinov, VSchneider, O.Schnell, G.Schueler, J.Schwanda, C.Schwartz, A. J.Seino, Y.Senyo, K.Sevior, M. E.Shebalin, VShiu, J-GShwartz, B.Simon, F.Sokolov, A.Solovieva, E.Staric, M.Stottler, Z. S.Strube, J. F.Sumihama, M.Sumiyoshi, T.Takizawa, M.Tamponi, U.Tanida, K.Tenchini, F.Uchida, M.Uglov, T.Unno, Y.Uno, S.Ushiroda, Y.Vahsen, S. E.Van Tonder, R.Varner, G.Vinokurova, A.Wang, B.Wang, C. H.Wang, M-ZWang, P.Watanuki, S.Won, E.Yang, S. B.Ye, H.Yelton, J.Yin, J. H.Yuan, C. Z.Yusa, Y.Zhang, Z. P.Zhilich, VZhukova, VZhulanov, V
Issue Date
12-8월-2019
Publisher
AMER PHYSICAL SOC
Citation
PHYSICAL REVIEW D, v.100, no.3
Indexed
SCIE
SCOPUS
Journal Title
PHYSICAL REVIEW D
Volume
100
Number
3
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/63535
DOI
10.1103/PhysRevD.100.031101
ISSN
2470-0010
Abstract
We present the first measurements of the absolute branching fractions of Xi(+)(c) decays into Xi(-)pi(+)pi(+) and pK(-)pi(+) final states. Our analysis is based on a data set of (772 +/- 11) x 10(6) B (B) over bar pairs collected at the Upsilon(4S) resonance with the Belle detector at the KEKB e(+)e(-) collider. We measure the absolute branching fraction of (B) over bar (0) -> (Lambda) over bar (-)(c)Xi(+)(c) with the Xi(+)(c) recoiling against (Lambda) over bar (- )(c)in (B) over bar (0) decays resulting in B((B) over bar (0) -> (Lambda) over bar (-)(c)Xi(+)(c)) = [1.16 +/- 0.42(stat.) +/- 0.15(syst.)] x 10(-3). We then measure the product branching fractions B((B) over bar (0) -> (Lambda) over bar (-)(c)Xi(+)(c))B(Xi(+)(c) -> Xi(-)pi(+)pi(+)) and B((B) over bar (0) -> (Lambda) over bar (-)(c)Xi(+)(c))B(Xi(+)(c) -> pK(-)pi(+)). Dividing these product branching fractions by (B) over bar (0) -> (Lambda) over bar (-)(c)Xi(+)(c) yields B(Xi(+)(c) -> Xi(-)pi(+)pi(+)) = [2.86 +/- 1.21(stat.) +/- 0.38(syst.)]% and B(Xi(+)(c) -> pK(-)pi(+)) = [0.45 +/- 0.21(stat.) +/- 0.07(syst.)]%. Our result for B(Xi(+)(c) -> Xi(-)pi(+)pi(+)) can be combined with Xi(+)(c) branching fractions measured relative to Xi(+)(c) -> Xi(-)pi(+)pi(+) to set the absolute scale for many Xi(+)(c) branching fractions.
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