Observation of an exotic narrow doubly charmed tetraquark

Nature Physics Nature Research 18:7 (2022) 751-754

Authors:

R Aaij, ASW Abdelmotteleb, C Abellán Beteta, FJ Abudinen Gallego, T Ackernley, B Adeva, M Adinolfi, H Afsharnia, C Agapopoulou, CA Aidala, S Aiola, Z Ajaltouni, S Akar, J Albrecht, F Alessio, M Alexander, A Alfonso Albero, Z Aliouche, G Alkhazov, P Alvarez Cartelle, S Amato, JL Amey, Y Amhis, L An, L Anderlini

Abstract:

Conventional, hadronic matter consists of baryons and mesons made of three quarks and a quark-antiquark pair, respectively(1,2). Here, we report the observation of a hadronic state containing four quarks in the Large Hadron Collider beauty experiment. This so-called tetraquark contains two charm quarks, a (u) over bar and a (d) over tilde quark. This exotic state has a mass of approximately 3,875 MeV and manifests as a narrow peak in the mass spectrum of (DD0)-D-0 pi(+) mesons just below the D*D-+(0) mass threshold. The near-threshold mass together with the narrow width reveals the resonance nature of the state

Study of the doubly charmed tetraquark Tcc+

Nature Communications Springer Nature 13:1 (2022) 3351

Search for the rare hadronic decay $B_s^0\to p \bar{p}$

ArXiv 2206.06673 (2022)

Study of the processes χcJ→ Ξ−Ξ¯+ and Ξ0Ξ¯0

Journal of High Energy Physics Springer Nature 2022:6 (2022) 74

Authors:

M Ablikim, MN Achasov, P Adlarson, S Ahmed, M Albrecht, R Aliberti, A Amoroso, MR An, Q An, XH Bai, Y Bai, O Bakina, R Baldini Ferroli, I Balossino, Y Ban, K Begzsuren, N Berger, M Bertani, D Bettoni, F Bianchi, J Bloms, A Bortone, I Boyko, RA Briere, H Cai, X Cai, A Calcaterra, GF Cao, N Cao, SA Cetin, JF Chang, WL Chang, G Chelkov, DY Chen, G Chen, HS Chen, ML Chen, SJ Chen, XR Chen, YB Chen, ZJ Chen, WS Cheng, G Cibinetto, F Cossio, XF Cui, HL Dai, XC Dai, A Dbeyssi, RE de Boer, D Dedovich, ZY Deng, A Denig, I Denysenko, M Destefanis, F De Mori, Y Ding, C Dong, J Dong, LY Dong, MY Dong, X Dong, SX Du, YL Fan, J Fang, SS Fang, Y Fang, R Farinelli, L Fava, F Feldbauer, G Felici, CQ Feng, JH Feng, M Fritsch, CD Fu, Y Gao, Y Gao, YG Gao, I Garzia, PT Ge, C Geng, EM Gersabeck, A Gilman, K Goetzen, L Gong, WX Gong, W Gradl, M Greco, LM Gu, MH Gu, CY Guan, AQ Guo, AQ Guo, LB Guo, RP Guo, YP Guo, A Guskov, TT Han, WY Han, XQ Hao, FA Harris, KL He, FH Heinsius, CH Heinz, YK Heng, C Herold, M Himmelreich, T Holtmann, GY Hou, YR Hou, ZL Hou, HM Hu, JF Hu, T Hu, Y Hu, GS Huang, LQ Huang, XT Huang, YP Huang, Z Huang, T Hussain, N Hüsken, W Ikegami Andersson, W Imoehl, M Irshad, S Jaeger, S Janchiv, Q Ji, QP Ji, XB Ji, XL Ji, YY Ji, HB Jiang, XS Jiang, JB Jiao, Z Jiao, S Jin, Y Jin, MQ Jing, T Johansson, N Kalantar-Nayestanaki, XS Kang, R Kappert, M Kavatsyuk, BC Ke, IK Keshk, A Khoukaz, P Kiese, R Kiuchi, R Kliemt, L Koch, OB Kolcu, B Kopf, M Kuemmel, M Kuessner, A Kupsc, MG Kurth, W Kühn, JJ Lane, JS Lange, P Larin, A Lavania, L Lavezzi, ZH Lei, H Leithoff, M Lellmann, T Lenz, C Li, CH Li, Cheng Li, DM Li, F Li, G Li, H Li, H Li, HB Li, HJ Li, HN Li, JL Li, JQ Li, JS Li, Ke Li, LK Li, Lei Li, PR Li, SY Li, WD Li, WG Li, XH Li, XL Li, Xiaoyu Li, ZY Li, H Liang, H Liang, H Liang, YF Liang, YT Liang, GR Liao, LZ Liao, J Libby, CX Lin, DX Lin, T Lin, BJ Liu, CX Liu, D Liu, FH Liu, Fang Liu, Feng Liu, GM Liu, HM Liu, Huanhuan Liu, Huihui Liu, JB Liu, JL Liu, JY Liu, K Liu, KY Liu, Ke Liu, L Liu, MH Liu, PL Liu, Q Liu, Q Liu, SB Liu, T Liu, WM Liu, X Liu, Y Liu, YB Liu, ZA Liu, ZQ Liu, XC Lou, FX Lu, HJ Lu, JD Lu, JG Lu, XL Lu, Y Lu, YP Lu, CL Luo, MX Luo, PW Luo, T Luo, XL Luo, XR Lyu, FC Ma, HL Ma, LL Ma, MM Ma, QM Ma, RQ Ma, RT Ma, XX Ma, XY Ma, FE Maas, M Maggiora, S Maldaner, S Malde, QA Malik, A Mangoni, YJ Mao, ZP Mao, S Marcello, ZX Meng, JG Messchendorp, G Mezzadri, TJ Min, RE Mitchell, XH Mo, N Yu Muchnoi, H Muramatsu, S Nakhoul, Y Nefedov, F Nerling, IB Nikolaev, Z Ning, S Nisar, Q Ouyang, S Pacetti, X Pan, Y Pan, A Pathak, A Pathak, P Patteri, M Pelizaeus, HP Peng, K Peters, J Pettersson, JL Ping, RG Ping, S Pogodin, R Poling, V Prasad, H Qi, HR Qi, M Qi, TY Qi, S Qian, WB Qian, Z Qian, CF Qiao, JJ Qin, LQ Qin, XP Qin, XS Qin, ZH Qin, JF Qiu, SQ Qu, KH Rashid, K Ravindran, CF Redmer, A Rivetti, V Rodin, M Rolo, G Rong, Ch Rosner, M Rump, HS Sang, A Sarantsev, Y Schelhaas, C Schnier, K Schoenning, M Scodeggio, W Shan, XY Shan, JF Shangguan, M Shao, CP Shen, HF Shen, XY Shen, HC Shi, RS Shi, X Shi, XD Shi, JJ Song, JJ Song, WM Song, YX Song, S Sosio, S Spataro, KX Su, PP Su, FF Sui, GX Sun, HK Sun, JF Sun, L Sun, SS Sun, T Sun, WY Sun, X Sun, YJ Sun, YZ Sun, ZT Sun, YH Tan, YX Tan, CJ Tang, GY Tang, J Tang, JX Teng, V Thoren, WH Tian, YT Tian, I Uman, B Wang, CW Wang, DY Wang, HJ Wang, HP Wang, K Wang, LL Wang, M Wang, MZ Wang, Meng Wang, S Wang, W Wang, WH Wang, WP Wang, X Wang, XF Wang, XL Wang, Y Wang, YD Wang, YF Wang, YQ Wang, YY Wang, Z Wang, ZY Wang, Ziyi Wang, Zongyuan Wang, DH Wei, F Weidner, SP Wen, DJ White, U Wiedner, G Wilkinson, M Wolke, L Wollenberg, JF Wu, LH Wu, LJ Wu, X Wu, XH Wu, Z Wu, L Xia, H Xiao, SY Xiao, ZJ Xiao, XH Xie, YG Xie, YH Xie, TY Xing, CJ Xu, GF Xu, QJ Xu, W Xu, XP Xu, YC Xu, F Yan, L Yan, WB Yan, WC Yan, HJ Yang, HX Yang, L Yang, SL Yang, YX Yang, Yifan Yang, Zhi Yang, M Ye, MH Ye, JH Yin, ZY You, BX Yu, CX Yu, G Yu, JS Yu, T Yu, CZ Yuan, L Yuan, XQ Yuan, Y Yuan, ZY Yuan, CX Yue, AA Zafar, X Zeng, Y Zeng, AQ Zhang, BX Zhang, Guangyi Zhang, H Zhang, HH Zhang, HH Zhang, HY Zhang, JJ Zhang, JL Zhang, JQ Zhang, JW Zhang, JY Zhang, JZ Zhang, Jianyu Zhang, Jiawei Zhang, LM Zhang, LQ Zhang, Lei Zhang, S Zhang, SF Zhang, Shulei Zhang, XD Zhang, XY Zhang, Y Zhang, YT Zhang, YH Zhang, Yan Zhang, Yao Zhang, ZY Zhang, G Zhao, J Zhao, JY Zhao, JZ Zhao, Lei Zhao, Ling Zhao, MG Zhao, Q Zhao, SJ Zhao, YB Zhao, YX Zhao, ZG Zhao, A Zhemchugov, B Zheng, JP Zheng, YH Zheng, B Zhong, C Zhong, LP Zhou, Q Zhou, X Zhou, XK Zhou, XR Zhou, XY Zhou, AN Zhu, J Zhu, K Zhu, KJ Zhu, SH Zhu, TJ Zhu, WJ Zhu, WJ Zhu, YC Zhu, ZA Zhu, BS Zou, JH Zou

Measurement of $τ_{L}$ using the $B_{s}^{0} \to J/ψη$ decay mode

ArXiv 2206.03088 (2022)