Abe K, Abe K, Abe T, Adachi I, Aihara H, Akatsu M, Asano Y, Aso T, Aulchenko V, Aushev T, Bakich A M, Ban Y, Banas E, Behari S, Behera P K, Bondar A, Bozek A, Bracko M, Browder T E, Casey B C K, Chang P, Chao Y, Cheon B G, Chistov R, Choi S-K, Choi Y, Dong L Y, Dragic J, Drutskoy A, Eidelman S, Eiges V, Everton C W, Fang F, Fujii H, Fukunaga C, Fukushima M, Gabyshev N, Garmash A, Gershon T, Golob B, Gordon A, Gotow K, Guo R, Haba J, Hamasaki H, Hanagaki K, Handa F, Hara K, Hara T, Hastings N C, Hayashii H, Hazumi M, Heenan E M, Higuchi I, Higuchi T, Hojo T, Hokuue T, Hoshi Y, Hoshina K, Hou S R, Hou W-S, Huang H-C, Igarashi Y, Iijima T, Ikeda H, Inami K, Ishikawa A, Ishino H, Itoh R, Iwasaki H, Iwasaki Y, Jackson D J, Jang H K, Kang J H, Kang J S, Kapusta P, Katayama N, Kawai H, Kawai H, Kawamura N, Kawasaki T, Kichimi H, Kim D W, Kim Heejong, Kim H J, Kim H O, Kim Hyunwoo, Kim S K, Kim T H, Kinoshita K, Konishi H, Korpar S, Krizan P, Krokovny P, Kulasiri R, Kumar S, Kuzmin A, Kwon Y-J, Lange J S, Leder G, Lee S H, Limosani A, Liventsev D, Lu R-S, MacNaughton J, Mandl F, Marlow D, Matsumoto S, Matsumoto T, Mikami Y, Miyabayashi K, Miyake H, Miyata H, Moloney G R, Moorhead G F, Mori S, Mori T, Nagamine T, Nagasaka Y, Nagashima Y, Nakadaira T, Nakano E, Nakao M, Nam J W, Natkaniec Z, Neichi K, Nishida S, Nitoh O, Noguchi S, Nozaki T, Ogawa S, Ohno F, Ohshima T, Okabe T, Okuno S, Olsen S L, Ostrowicz W, Ozaki H, Pakhlov P, Palka H, Park C S, Park C W, Park H, Park K S, Peak L S, Perroud J-P, Peters M, Piilonen L E, Ronga F, Root N, Rozanska M, Rybicki K, Ryuko J, Sagawa H, Sakai Y, Sakamoto H, Satapathy M, Satpathy A, Schneider O, Schrenk S, Semenov S, Senyo K, Sevior M E, Shibuya H, Singh J B, Stanic S, Sugi A, Sugiyama A, Sumisawa K, Sumiyoshi T, Suzuki K, Suzuki S, Suzuki S Y, Swain S K, Takahashi T, Takasaki F, Takita M, Tamai K, Tamura N, Tanaka J, Tanaka M, Taylor G N, Teramoto Y, Tomoto M, Tomura T, Tovey S N, Trabelsi K, Tsuboyama T, Tsukamoto T, Uehara S, Ueno K, Unno Y, Uno S, Ushiroda Y, Varvell K E, Wang C C, Wang C H, Wang J G, Wang M-Z, Watanabe Y, Won E, Yabsley B D, Yamada Y, Yamaga M, Yamaguchi A, Yamamoto H, Yamashita Y, Yamauchi M, Yokoyama M, Yuan Y, Yusa Y, Zhang C C, Zhang J, Zheng Y, Zhilich V, Zontar D
High Energy Accelerator Research Organization (KEK), Tsukuba.
Phys Rev Lett. 2002 Jul 1;89(1):011803. doi: 10.1103/PhysRevLett.89.011803. Epub 2002 Jun 14.
We report the first observation of chi(c2) production in B meson decays. We find an inclusive B-->chi(c2)X branching fraction of (1.80(+0.23)(-0.28)+/-0.26) x 10(-3). The data set, collected with the Belle detector at the KEKB e(+)e(-) collider, consists of 31.9 x 10(6) BB events. We also present branching fractions and momentum spectra for both chi(c1) and chi(c2) production.
我们报告了在B介子衰变中首次观测到χc2产生的情况。我们发现B→χc2X的包含性分支比为(1.80(+0.23)(-0.28)±0.26)×10-3。使用KEKB正负电子对撞机上的Belle探测器收集的数据集包含31.9×106个BB事件。我们还给出了χc1和χc2产生的分支比及动量谱。
