Evidence for a new resonance and search for the Y(4140) in the gammagamma-->phiJ/psi process.

Journal: Physical Review Letters

Published: December 11, 2009

Abstract

The process gammagamma-->phiJ/psi is measured using a data sample of 825 fb{-1} collected with the Belle detector. A narrow peak of 8.8{-3.2}{+4.2} events, with a significance of 3.2 standard deviations including systematic uncertainty, is observed. The mass and natural width of the structure [named X(4350)] are measured to be [4350.6{-5.1}{+4.6}(stat)+/-0.7(syst)] MeV/c{2} and [13{-9}{+18}(stat)+/-4(syst)] MeV, respectively. The product of its two-photon decay width and branching fraction to phiJ/psi is [6.7{-2.4}{+3.2}(stat)+/-1.1(syst)] eV for J{P}=0{+}, or [1.5{-0.6}{+0.7}(stat)+/-0.3(syst)] eV for J{P}=2{+}. No signal for the Y(4140)-->phiJ/psi structure reported by the CDF Collaboration in B-->K{+}phiJ/psi decays is observed, and limits of Gamma_{gammagamma}(Y(4140))B(Y(4140)-->phiJ/psi)<41 eV for J{P}=0;{+} or <6.0 eV for J{P}=2{+} are determined at the 90% C.L. This disfavors the scenario in which the Y(4140) is a D{s}{*+}D{s}{*-} molecule.

Authors

C Shen, C Yuan, H Aihara, K Arinstein, T Aushev, A Bakich, V Balagura, E Barberio, A Bay, K Belous, V Bhardwaj, M Bischofberger, M Bracko, T Browder, M-c Chang, P Chang, A Chen, P Chen, B Cheon, C-c Chiang, I-s Cho, Y Choi, J Dalseno, A Das, Z Dolezal, A Drutskoy, S Eidelman, D Epifanov, N Gabyshev, B Golob, H Ha, J Haba, B-y Han, K Hayasaka, H Hayashii, Y Horii, Y Hoshi, W-s Hou, Y Hsiung, H Hyun, K Inami, R Itoh, M Iwabuchi, M Iwasaki, Y Iwasaki, N Joshi, T Julius, J Kang, T Kawasaki, C Kiesling, H Kim, H Kim, J Kim, S Kim, Y Kim, Y Kim, B Ko, P Kodys, S Korpar, M Kreps, P Krizan, P Krokovny, T Kuhr, Y-j Kwon, S-h Kyeong, J Lange, M Lee, S-h Lee, J Li, C Liu, Y Liu, D Liventsev, R Louvot, A Matyja, S Mconie, K Miyabayashi, H Miyata, Y Miyazaki, T Mori, R Mussa, E Nakano, M Nakao, H Nakazawa, Z Natkaniec, S Neubauer, S Nishida, K Nishimura, O Nitoh, T Ohshima, S Okuno, S Olsen, G Pakhlova, C Park, H Park, H Park, R Pestotnik, M Petric, L Piilonen, M Röhrken, S Ryu, H Sahoo, Y Sakai, O Schneider, K Senyo, M Sevior, M Shapkin, J-g Shiu, B Shwartz, J Singh, P Smerkol, A Sokolov, E Solovieva, M Staric, Y Teramoto, K Trabelsi, S Uehara, T Uglov, Y Unno, S Uno, P Urquijo, G Varner, K Vervink, C Wang, P Wang, X Wang, Y Watanabe, R Wedd, E Won, B Yabsley, Y Yamashita, C Zhang, Z Zhang, T Zivko, O Zyukova

Evidence for a new resonance and search for the Y(4140) in the gammagamma-->phiJ/psi process.

Similar Publications