Abe K, Adachi I, Aihara H, Arinstein K, Asano Y, Aulchenko V, Aushev T, Aziz T, Bakich A M, Balagura V, Barbero M, Bedny I, Bitenc U, Bizjak I, Bondar A, Bracko M, Brodzicka J, Browder T E, Chao Y, Chen A, Cheon B G, Chistov R, Choi S-K, Choi Y, Choi Y K, Chuvikov A, Cole S, Dalseno J, Danilov M, Dash M, Drutskoy A, Eidelman S, Epifanov D, Fratina S, Gabyshev N, Gershon T, Gokhroo G, Golob B, Ha H C, Haba J, Hasegawa Y, Hayasaka K, Hayashii H, Hazumi M, Hinz L, Hoshi Y, Hou S, Hou W-S, Hsiung Y B, Iijima T, Ishikawa A, Iwasaki M, Iwasaki Y, Kapusta P, Kawasaki T, Khan H R, Kichimi H, Kim H J, Kim S M, Kinoshita K, Korpar S, Krokovny P, Kuo C C, Kuzmin A, Lange J S, Leder G, Lesiak T, Limosani A, Lin S-W, Liventsev D, Mandl F, Matsumoto T, Matyja A, Mikami Y, Mitaroff W, Miyabayashi K, Miyata H, Mizuk R, Nagasaka Y, Nakano E, Nakao M, Nishida S, Nitoh O, Ogawa S, Ohshima T, Okuno S, Olsen S L, Ozaki H, Pakhlov P, Palka H, Park C W, Park H, Park K S, Peak L S, Piilonen L E, Poluektov A, Sakai Y, Sato N, Schietinger T, Schneider O, Schwartz A J, Seidl R, Senyo K, Sevior M E, Shwartz B, Sidorov V, Somov A, Stamen R, Staric M, Sumiyoshi T, Suzuki S Y, Takasaki F, Tamura N, Tanaka M, Teramoto Y, Tian X C, Trabelsi K, Tsukamoto T, Uehara S, Uglov T, Ueno K, Unno Y, Uno S, Urquijo P, Varner G, Varvell K E, Villa S, Wang C C, Wang C H, Wang M-Z, Won E, Xie Q L, Yabsley B D, Yamaguchi A, Yamashita Y, Yamauchi M, Ying J, Zhang C C, Zhang J, Zhang L M, Zhang Z P, Zhilich V
High Energy Accelerator Research Organization (KEK), Tsukuba, Japan.
Phys Rev Lett. 2007 Feb 23;98(8):082001. doi: 10.1103/PhysRevLett.98.082001. Epub 2007 Feb 20.
We report the first observation of a charmoniumlike state recoiling from the J/psi in the inclusive process e+e- -->J/psi+anything at a mass of (3.943+/-0.006+/-0.006) GeV/c{2}. We also observe the decay of this state into D*D[over ] and determine its intrinsic width to be less than 52 MeV/c{2} at the 90% C.L. These results are obtained from a 357 fb{-1} data sample collected with the Belle detector near the Upsilon(4S) resonance, at the KEKB asymmetric-energy e+e- collider.
我们报告了在e⁺e⁻→J/ψ + 任何粒子的包容性过程中，首次观测到一个类粲偶素态从J/ψ反冲，其质量为(3.943±0.006±0.006) GeV/c²。我们还观测到该态衰变为D*D⁻，并确定其本征宽度在90%置信水平下小于52 MeV/c²。这些结果是利用KEKB非对称能量e⁺e⁻对撞机上的Belle探测器，在Upsilon(4S)共振附近收集的357 fb⁻¹数据样本得到的。
