在质心能量√s = 10.867 GeV下对e⁺e⁻→π⁺π⁻π⁰(χbJ)的观测以及对X(b)→ωϒ(1S)的寻找
Observation of e+e- → π+π-π(0)(χbJ) and Search for X(b) → ωϒ(1S) at sqrt[s] = 10.867 GeV.
作者信息
He X H, Shen C P, Yuan C Z, Ban Y, Abdesselam A, Adachi I, Aihara H, Asner D M, Aulchenko V, Aushev T, Ayad R, Bahinipati S, Bakich A M, Bansal V, Bhuyan B, Bondar A, Bonvicini G, Bozek A, Bračko M, Browder T E, Cervenkov D, Chang P, Chekelian V, Chen A, Cheon B G, Chilikin K, Chistov R, Cho K, Chobanova V, Choi S-K, Choi Y, Cinabro D, Dalseno J, Danilov M, Doležal Z, Drásal Z, Drutskoy A, Eidelman S, Farhat H, Fast J E, Ferber T, Gaur V, Gabyshev N, Ganguly S, Garmash A, Gillard R, Glattauer R, Goh Y M, Grzymkowska O, Haba J, Hayasaka K, Hayashii H, Hou W-S, Iijima T, Ishikawa A, Itoh R, Iwasaki Y, Jaegle I, Joo K K, Julius T, Kato E, Kawasaki T, Kim D Y, Kim M J, Kim Y J, Kinoshita K, Ko B R, Kodyš P, Korpar S, Križan P, Krokovny P, Kumita T, Kuzmin A, Kwon Y-J, Lange J S, Li Y, Libby J, Liventsev D, Matvienko D, Miyabayashi K, Miyata H, Mizuk R, Mohanty G B, Moll A, Mussa R, Nakano E, Nakao M, Nakazawa H, Nanut T, Natkaniec Z, Nedelkovska E, Nisar N K, Nishida S, Ogawa S, Okuno S, Pakhlov P, Pakhlova G, Park H, Pedlar T K, Pestotnik R, Petrič M, Piilonen L E, Ritter M, Rostomyan A, Sakai Y, Sandilya S, Santelj L, Sanuki T, Sato Y, Savinov V, Schneider O, Schnell G, Schwanda C, Semmler D, Senyo K, Sevior M E, Shebalin V, Shibata T-A, Shiu J-G, Shwartz B, Sibidanov A, Simon F, Sohn Y-S, Sokolov A, Solovieva E, Starič M, Steder M, Sumisawa K, Sumiyoshi T, Tamponi U, Tanida K, Tatishvili G, Teramoto Y, Thorne F, Trabelsi K, Uchida M, Uehara S, Uglov T, Unno Y, Uno S, Urquijo P, Vahsen S E, Van Hulse C, Vanhoefer P, Varner G, Vinokurova A, Vorobyev V, Wagner M N, Wang C H, Wang M-Z, Wang P, Wang X L, Watanabe M, Watanabe Y, Wehle S, Williams K M, Won E, Yamaoka J, Yashchenko S, Yook Y, Yusa Y, Zhang Z P, Zhilich V, Zhulanov V, Zupanc A
机构信息
Peking University, Beijing 100871.
Beihang University, Beijing 100191.
出版信息
Phys Rev Lett. 2014 Oct 3;113(14):142001. doi: 10.1103/PhysRevLett.113.142001. Epub 2014 Sep 30.
The e(+)e(-) → π(+)π(-)π(0)χ(bJ) (J = 0,1,2) processes are studied using a 118 fb(-1) data sample acquired with the Belle detector at a center-of-mass energy of 10.867 GeV. Unambiguous π(+)π(-)π(0)χ(bJ) (J = 1,2), ωχ(b1) signals are observed, and indication for ωχ(b2) is seen, both for the first time, and the corresponding cross section measurements are presented. No significant π(+)π(-)π(0)χ(b0) or ωχ(b0) signals are observed, and 90% confidence level upper limits on the cross sections for these two processes are obtained. In the π(+)π(-)π(0) invariant mass spectrum, significant non-ω signals are also observed. We search for the X(3872)-like state (named X(b)) decaying into ωϒ(1S); no significant signal is observed with a mass between 10.55 and 10.65 GeV/c(2).
利用在质心能量为10.867 GeV时用Belle探测器采集的118 fb⁻¹数据样本，对e⁺e⁻→π⁺π⁻π⁰χ(bJ)（J = 0,1,2）过程进行了研究。首次观测到了明确无误的π⁺π⁻π⁰χ(bJ)（J = 1,2）、ωχ(b1)信号，并看到了ωχ(b2)的迹象，同时给出了相应的截面测量结果。未观测到显著的π⁺π⁻π⁰χ(b0)或ωχ(b0)信号，得到了这两个过程截面的90%置信水平上限。在π⁺π⁻π⁰不变质量谱中，也观测到了显著的非ω信号。我们寻找衰变为ωϒ(1S)的类X(3872)态（命名为X(b)）；在质量介于10.55和10.65 GeV/c²之间未观测到显著信号。
Zotero 插件