Choi S-K, Olsen S L, Abe K, Abe T, Adachi I, Ahn Byoung Sup, Aihara H, Akai K, Akatsu M, Akemoto M, Asano Y, Aso T, Aulchenko V, Aushev T, Bakich A M, Ban Y, Banerjee S, Bondar A, Bozek A, Bracko M, Brodzicka J, Browder T E, Chang P, Chao Y, Chen K-F, Cheon B G, Chistov R, Choi Y, Choi Y K, Danilov M, Dong L Y, Drutskoy A, Eidelman S, Eiges V, Flanagan J, Fukunaga C, Furukawa K, Gabyshev N, Gershon T, Golob B, Guler H, Guo R, Hagner C, Handa F, Hara T, Hastings N C, Hayashii H, Hazumi M, Hinz L, Hoshi Y, Hou W-S, Hsiung Y B, Huang H-C, Iijima T, Inami K, Ishikawa A, Itoh R, Iwasaki M, Iwasaki Y, Kang J H, Kataoka S U, Katayama N, Kawai H, Kawasaki T, Kichimi H, Kikutani E, Kim H J, Kim Hyunwoo, Kim J H, Kim S K, Kinoshita K, Koiso H, Koppenburg P, Korpar S, Krizan P, Krokovny P, Kumar S, Kuzmin A, Lange J S, Leder G, Lee S H, Lesiak T, Lin S-W, Liventsev D, MacNaughton J, Majumder G, Mandl F, Marlow D, Matsumoto T, Michizono S, Mimashi T, Mitaroff W, Miyabayashi K, Miyake H, Mohapatra D, Moloney G R, Nagamine T, Nagasaka Y, Nakadaira T, Nakamura T T, Nakao M, Natkaniec Z, Nishida S, Nitoh O, Nozaki T, Ogawa S, Ogawa Y, Ohmi K, Ohnishi Y, Ohshima T, Ohuchi N, Oide K, Okabe T, Okuno S, Ostrowicz W, Ozaki H, Palka H, Park H, Parslow N, Piilonen L E, Sagawa H, Saitoh S, Sakai Y, Sarangi T R, Satapathy M, Satpathy A, Schneider O, Schwartz A J, Semenov S, Senyo K, Seuster R, Sevior M E, Shibuya H, Shidara T, Shwartz B, Sidorov V, Soni N, Stanic S, Staric M, Sugiyama A, Sumiyoshi T, Suzuki S, Takasaki F, Tamai K, Tamura N, Tanaka M, Tawada M, Taylor G N, Teramoto Y, Tomura T, Trabelsi K, Tsukamoto T, Uehara S, Ueno K, Unno Y, Uno S, Varner G, Varvell K E, Wang C C, Wang C H, Wang J G, Watanabe Y, Won E, Yabsley B D, Yamada Y, Yamaguchi A, Yamashita Y, Yanai H, Yang Heyoung, Ying J, Yoshida M, Zhang C C, Zhang Z P, Zontar D
Gyeongsang National University, Chinju.
Phys Rev Lett. 2003 Dec 31;91(26 Pt 1):262001. doi: 10.1103/PhysRevLett.91.262001. Epub 2003 Dec 23.
We report the observation of a narrow charmoniumlike state produced in the exclusive decay process B+/--->K+/-pi(+)pi(-)J/psi. This state, which decays into pi(+)pi(-)J/psi, has a mass of 3872.0+/-0.6(stat)+/-0.5(syst) MeV, a value that is very near the M(D0)+M(D(*0)) mass threshold. The results are based on an analysis of 152M B-Bmacr; events collected at the Upsilon(4S) resonance in the Belle detector at the KEKB collider. The signal has a statistical significance that is in excess of 10sigma.
我们报告了在专属衰变过程B⁺⁻→K⁺⁻π⁺π⁻J/ψ中产生的一个窄类粲偶素态的观测结果。这个衰变成π⁺π⁻J/ψ的态，其质量为3872.0±0.6（统计）±0.5（系统）MeV，该值非常接近M（D⁰）+M（D*⁰）的质量阈值。这些结果基于对KEKB对撞机上Belle探测器在Upsilon（4S）共振处收集的1.52亿个B⁺B⁻事件的分析。该信号的统计显著性超过10σ。
