Evidence for $Z_c^{\pm}(3900)$ in semi-inclusive decays of $b$-flavored hadrons

• Main Authors: Alton, Andrew K, Aushev, Volodymyr, Aushev, Yegor, Bagby, Linda F, Baldin, Boris, Bandurin, Dmitry V, Banerjee, Sunanda, Barberis, Emanuela, Bartlett, JFrederick, Bassler, Ursula Rita, Bazterra, Victor, Bean, Alice L, Bertram, Iain A, Blazey, Gerald Charles, Blessing, Susan K, Boehnlein, Amber S, Borissov, Guennadi, Buehler, Marc, Chan, Kwok Ming Leo, Chandra, Avdhesh, Chapon, Emilien, Claes, Daniel R, Cooke, Michael P, Cutts, David, Davies, Gavin John, De Jong, Sijbrand Jan, De La Cruz-Burelo, Eduard, Demina, Regina, Ding, Pengfei, Duperrin, Arnaud, Dutt, Suneel, Ellison, John A, Elvira, VDaniel, Evdokimov, Anatoly V, Evdokimov, Valeri N, Faure, Alexandre, Fisher, Wade Cameron, Fisk, HEugene, Franc, Jiri, Fuess, Stuart C, Geng, Weigang, Gerber, Cecilia Elena, Grenier, Gerald Jean, Grohsjean, Alexander, Harel, Amnon, Heintz, Ulrich, Hensel, Carsten, Hesketh, Gavin G, Hildreth, Michael D, Hogan, Julie, Illingworth, Robert A, Jayasinghe, Ayesh, Jeong, Min-Soo, Jiang, Peng, Juste, Aurelio, Kehoe, Robert Leo Patrick, Kermiche, Smain, Kharchilava, Avto, Kharzheev, Yuri N, Kumar, Ashish, Li, Liang, Linnemann, James Thomas, Luna-Garcia, Rene, Maciel, Arthur KA, Magana-Villalba, Ricardo, Meyer, Jorg Manfred, Mondal, Naba K, Mulhearn, Michael James, Nagy, Elemer, Narain, Meenakshi, Negret, Juan Pablo, Hernandez Orduna, Jose De Jesus, Pal, Arnab, Parua, Nirmalya, Penning, Bjoern, Prewitt, Michelle, Ratoff, Peter N, Razumov, Ivan A, Ross, Anthony, Savitskyi, Mykola, Scanlon, Timothy P, Schwanenberger, Christian, Schwienhorst, Reinhard H, Shabalina, Elizaveta K, Shchukin, Andrey A, Stark, Jan, Strauss, Michael G, Uvarov, Lev, Uvarov, Sergey L, Vertogradov, Leonid S, Verzocchi, Marco, Wahl, Horst D, Williams, Mark Richard James, Ye, Wanyu, Yip, Kin, Youn, Sungwoo, Yu, Jiaming, Zennamo, Joseph, Zhou, Bing, Zieminska, Daria
• Format: Report
• Language: English
• Subjects: anti-p p: colliding beams; anti-p p: scattering; Batavia TEVATRON Coll; data analysis method; decay: weak interaction; DZERO; experimental results; mass spectrum: (J/psi pi+ pi-); mass spectrum: (J/psi pi+); mass: width; semi-inclusive reaction; statistical analysis; Y > > Z/c pi; Y: hadronic decay; Z/c > > J/psi pi; Z/c: hadronic decay
• ISSN: 1550-7998; 1538-4500; 2470-0029; 0556-2821; 2470-0010; 1089-4918; 1550-2368
• DOI: 10.3204/pubdb-2019-00761

We present evidence for the exotic charged charmoniumlike state $Z_{c}^{±}(3900)$ decaying to $J/ψπ^±$ in semi-inclusive weak decays of $b$-flavored hadrons. The signal is correlated with a parent $J/ψπ^+ π^-$ system in the invariant-mass range 4.2–4.7 GeV that would include the exotic structure $Y(4260)$. The study is based on $10.4 fb^{−1}$ of $p\bar{p}$ collision data collected by the D0 experiment at the Fermilab Tevatron collider.