Observation of ϒ(2S)→γη_{b}(1S) Decay.
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, Journal Article
Fulsom, BG; Pedlar, TK; Adachi, I; Aihara, H; Al Said, S; Asner, DM; Atmacan, H; Aulchenko, V; Aushev, T; Ayad, R; Babu, V; Badhrees, I ...
Published in: Physical review letters
December 2018
We report the observation of ϒ(2S)→γη_{b}(1S) decay based on an analysis of the inclusive photon spectrum of 24.7 fb^{-1} of e^{+}e^{-} collisions at the ϒ(2S) center-of-mass energy collected with the Belle detector at the KEKB asymmetric-energy e^{+}e^{-} collider. We measure a branching fraction of B[ϒ(2S)→γη_{b}(1S)]=(6.1_{-0.7-0.6}^{+0.6+0.9})×10^{-4} and derive an η_{b}(1S) mass of 9394.8_{-3.1-2.7}^{+2.7+4.5} MeV/c^{2}, where the uncertainties are statistical and systematic, respectively. The significance of our measurement is greater than 7 standard deviations, constituting the first observation of this decay mode.
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Published In
Physical review letters
DOI
EISSN
1079-7114
ISSN
0031-9007
Publication Date
December 2018
Volume
121
Issue
23
Start / End Page
232001
Related Subject Headings
- General Physics
- 51 Physical sciences
- 49 Mathematical sciences
- 40 Engineering
- 09 Engineering
- 02 Physical Sciences
- 01 Mathematical Sciences
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Fulsom, B. G., Pedlar, T. K., Adachi, I., Aihara, H., Al Said, S., Asner, D. M., … Belle Collaboration, . (2018). Observation of ϒ(2S)→γη_{b}(1S) Decay. Physical Review Letters, 121(23), 232001. https://doi.org/10.1103/physrevlett.121.232001
Fulsom, B. G., T. K. Pedlar, I. Adachi, H. Aihara, S. Al Said, D. M. Asner, H. Atmacan, et al. “Observation of ϒ(2S)→γη_{b}(1S) Decay.” Physical Review Letters 121, no. 23 (December 2018): 232001. https://doi.org/10.1103/physrevlett.121.232001.
Fulsom BG, Pedlar TK, Adachi I, Aihara H, Al Said S, Asner DM, et al. Observation of ϒ(2S)→γη_{b}(1S) Decay. Physical review letters. 2018 Dec;121(23):232001.
Fulsom, B. G., et al. “Observation of ϒ(2S)→γη_{b}(1S) Decay.” Physical Review Letters, vol. 121, no. 23, Dec. 2018, p. 232001. Epmc, doi:10.1103/physrevlett.121.232001.
Fulsom BG, Pedlar TK, Adachi I, Aihara H, Al Said S, Asner DM, Atmacan H, Aulchenko V, Aushev T, Ayad R, Babu V, Badhrees I, Bakich AM, Bansal V, Behera P, Beleño C, Berger M, Bhardwaj V, Bhuyan B, Bilka T, Biswal J, Bondar A, Bonvicini G, Bozek A, Bračko M, Browder TE, Cao L, Červenkov D, Chekelian V, Chen A, Cheon BG, Chilikin K, Cho K, Choi S-K, Choi Y, Choudhury S, Cinabro D, Cunliffe S, Dash N, Di Carlo S, Dingfelder J, Doležal Z, Dong TV, Drásal Z, Eidelman S, Epifanov D, Fast JE, Ferber T, 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, Iijima T, Inami K, Inguglia G, Ishikawa A, Itoh R, Iwasaki M, Iwasaki Y, Jacobs WW, Jeon HB, Jia S, Jin Y, Joffe D, Joo KK, Julius T, Kawasaki T, Kichimi H, Kiesling C, Kim DY, Kim HJ, Kim JB, Kim KT, Kim SH, Kinoshita K, Kodyš P, Korpar S, Kotchetkov D, Križan P, Kroeger R, Krokovny P, Kuhr T, Kulasiri R, Kuzmin A, Kwon Y-J, Lange JS, Lee IS, Lee SC, Li LK, Li YB, 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 GB, Moon HK, Mori T, Mussa R, Nakao M, Nanut T, Nath KJ, Natkaniec Z, Nayak M, Niiyama M, Nisar NK, Nishida S, Ogawa S, Okuno S, Ono H, Pakhlov P, Pakhlova G, Pal B, Pardi S, Park H, Paul S, Pestotnik R, Piilonen LE, Popov V, Prencipe E, Rabusov A, Ritter M, Rostomyan A, Russo G, Sakai Y, Salehi M, Sandilya S, Santelj L, Sanuki T, Savinov V, Schneider O, Schnell G, Schwanda C, Seino Y, Senyo K, Sevior ME, Shebalin V, Shen CP, Shibata T-A, Shiu J-G, Shwartz B, Simon F, Singh JB, Sokolov A, Solovieva E, Starič M, Strube JF, Sumihama M, Sumisawa K, Sumiyoshi T, Sutcliffe W, Takizawa M, Tamponi U, Tanida K, Tenchini F, Uchida M, Uglov T, Unno Y, Uno S, Urquijo P, Vahsen SE, Van Hulse C, Van Tonder R, Varner G, Vinokurova A, Vorobyev V, Vossen A, Wang B, Wang CH, Wang P, Wang XL, Watanabe M, Watanuki S, Widmann E, Won E, Ye H, Yin JH, Yuan CZ, Zhang ZP, Zhilich V, Zhukova V, Zhulanov V, Zupanc A, Belle Collaboration. Observation of ϒ(2S)→γη_{b}(1S) Decay. Physical review letters. 2018 Dec;121(23):232001.
Published In
Physical review letters
DOI
EISSN
1079-7114
ISSN
0031-9007
Publication Date
December 2018
Volume
121
Issue
23
Start / End Page
232001
Related Subject Headings
- General Physics
- 51 Physical sciences
- 49 Mathematical sciences
- 40 Engineering
- 09 Engineering
- 02 Physical Sciences
- 01 Mathematical Sciences