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Study of Open-Charm Decays and Radiative Transitions of the X(3872)

Physical Review Letters American Physical Society (APS) 124:24 (2020) 242001

Authors:

M Ablikim, MN Achasov, P Adlarson, S Ahmed, M Albrecht, A Amoroso, Q An, Anita, Y Bai, O Bakina, R Baldini Ferroli, I Balossino, Y Ban, K Begzsuren, JV Bennett, N Berger, M Bertani, D Bettoni, F Bianchi, J Biernat, 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, W Cheng, G Cibinetto, F Cossio, XF Cui, HL Dai, JP Dai, XC Dai, A Dbeyssi, RB 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, SX Du, J Fang, SS Fang, Y Fang, R Farinelli, L Fava, F Feldbauer, G Felici, CQ Feng, M Fritsch, CD Fu, Y Fu, XL Gao, Y Gao, Y Gao, YG Gao, I Garzia, EM Gersabeck, A Gilman, K Goetzen, L Gong, WX Gong, W Gradl, M Greco, LM Gu, MH Gu, S Gu, YT Gu, CY Guan, AQ Guo, LB Guo, RP Guo, YP Guo, A Guskov, S Han, TT Han, TZ Han, XQ Hao, FA Harris, KL He, FH Heinsius, T Held, YK Heng, M Himmelreich, T Holtmann, YR Hou, ZL Hou, HM Hu, JF Hu, T Hu, Y Hu, GS Huang, LQ Huang, XT Huang, N Huesken, T Hussain, W Ikegami Andersson, W Imoehl, M Irshad, S Jaeger, S Janchiv, Q Ji, QP Ji, XB Ji, XL Ji, HB Jiang, XS Jiang, XY Jiang, JB Jiao, Z Jiao, S Jin, Y Jin, 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, L Lavezzi, H Leithoff, M Lellmann, T Lenz, C Li, CH Li, Cheng Li, DM Li, F Li, G Li, HB Li, HJ Li, JL Li, JQ Li, Ke Li, LK Li, Lei Li, PL Li, PR Li, WD Li, WG Li, XH Li, XL Li, ZB Li, ZY Li, H Liang, H Liang, YF Liang, YT Liang, LZ Liao, J Libby, CX Lin, B Liu, BJ Liu, CX Liu, D Liu, DY Liu, FH Liu, Fang Liu, Feng Liu, HB Liu, HM Liu, Huanhuan Liu, Huihui Liu, JB Liu, JY Liu, K Liu, KY Liu, Ke Liu, L Liu, LY Liu, Q Liu, SB Liu, T Liu, X Liu, YB Liu, ZA Liu, ZQ Liu, YF Long, XC Lou, HJ Lu, JD Lu, JG Lu, XL Lu, Y Lu, YP Lu, CL Luo, MX Luo, PW Luo, T Luo, XL Luo, S Lusso, XR Lyu, F C., H L., L L., M M., Q M., R Q., R T., X N., X X., X Y., Y M., 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, YJ Mo, N Yu Muchnoi, H Muramatsu, S Nakhoul, Y Nefedov, F Nerling, IB Nikolaev, Z Ning, S Nisar, SL Olsen, Q Ouyang, S Pacetti, Y Pan, Y Pan, M Papenbrock, A Pathak, P Patteri, M Pelizaeus, HP Peng, K Peters, J Pettersson, JL Ping, RG Ping, A Pitka, R Poling, V Prasad, H Qi, M Qi, TY Qi, S Qian, W-B Qian, CF Qiao, 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, A Sarantsev, M Savrié, Y Schelhaas, C Schnier, K Schoenning, W Shan, XY Shan, M Shao, CP Shen, PX Shen, XY Shen, HC Shi, RS Shi, X Shi, XD Shi, JJ Song, QQ Song, YX Song, S Sosio, S Spataro, FF Sui, GX Sun, JF Sun, L Sun, SS Sun, T Sun, WY Sun, YJ Sun, YK Sun, YZ Sun, ZT Sun, YX Tan, CJ Tang, GY Tang, V Thoren, B Tsednee, I Uman, B Wang, BL Wang, CW Wang, DY Wang, HP Wang, K Wang, LL Wang, M Wang, MZ Wang, Meng Wang, WP Wang, X Wang, XF Wang, XL Wang, Y Wang, Y Wang, YD Wang, YF Wang, YQ Wang, Z Wang, ZY Wang, Ziyi Wang, Zongyuan Wang, T Weber, DH Wei, P Weidenkaff, F Weidner, HW Wen, SP Wen, DJ White, U Wiedner, G Wilkinson, M Wolke, L Wollenberg, JF Wu, LH Wu, LJ Wu, X Wu, Z Wu, L Xia, H Xiao, SY Xiao, YJ Xiao, ZJ Xiao, YG Xie, YH Xie, TY Xing, XA Xiong, GF Xu, JJ Xu, QJ Xu, W Xu, XP Xu, L Yan, WB Yan, WC Yan, WC Yan, HJ Yang, HX Yang, L Yang, RX Yang, SL Yang, YH 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, W Yuan, XQ Yuan, Y Yuan, CX Yue, A Yuncu, AA Zafar, Y Zeng, BX Zhang, Guangyi Zhang, HH Zhang, HY Zhang, JL Zhang, JQ Zhang, JW Zhang, JY Zhang, JZ Zhang, Jianyu Zhang, Jiawei Zhang, L Zhang, Lei Zhang, S Zhang, SF Zhang, TJ Zhang, XY Zhang, Y Zhang, YH Zhang, YT Zhang, Yan Zhang, Yao Zhang, Yi Zhang, ZH 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 Zhao, ZG Zhao, A Zhemchugov, B Zheng, JP Zheng, Y Zheng, YH Zheng, B Zhong, C Zhong, LP Zhou, Q Zhou, X Zhou, XK Zhou, XR Zhou, AN Zhu, J Zhu, K Zhu, KJ Zhu, SH Zhu, WJ Zhu, XL Zhu, YC Zhu, ZA Zhu, BS Zou, JH Zou
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Measurement of the Λ b 0 → J/ψ Λ angular distribution and the Λ b 0 polarisation in pp collisions

Journal of High Energy Physics Springer 2020:6 (2020) 110

Authors:

R Aaij, C Abellán Beteta, T Ackernley, B Adeva, M Adinolfi, H Afsharnia, CA Aidala, S Aiola, Z Ajaltouni, S Akar, J Albrecht, F Alessio, M Alexander, A Alfonso Albero, G Alkhazov, P Alvarez Cartelle, AA Alves, S Amato, Y Amhis, L An, L Anderlini, G Andreassi, A Andreianov, M Andreotti

Abstract:

This paper presents an analysis of the Λb0→ J/ψΛ angular distribution and the transverse production polarisation of Λb0 baryons in proton-proton collisions at centre-of-mass energies of 7, 8 and 13 TeV. The measurements are performed using data corresponding to an integrated luminosity of 4.9 fb−1, collected with the LHCb experiment. The polarisation is determined in a fiducial region of Λb0 transverse momentum and pseudorapidity of 1 < pT< 20 GeV/c and 2 < η < 5, respectively. The data are consistent with Λb0 baryons being produced unpolarised in this region. The parity-violating asymmetry parameter of the Λ → pπ− decay is also determined from the data and its value is found to be consistent with a recent measurement by the BES III collaboration.
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Determination of Strong-Phase Parameters in D→KS,L0π+π−

Physical Review Letters American Physical Society (APS) 124:24 (2020) 241802

Authors:

M Ablikim, MN Achasov, P Adlarson, S Ahmed, M Albrecht, M Alekseev, D Ambrose, A Amoroso, FF An, Q An, Anita, Y Bai, O Bakina, R Baldini Ferroli, I Balossino, Y Ban, K Begzsuren, JV Bennett, N Berger, M Bertani, D Bettoni, F Bianchi, J Biernat, J Bloms, I Boyko, RA Briere, H Cai, X Cai, A Calcaterra, GF Cao, N Cao, SA Cetin, J Chai, JF Chang, WL Chang, G Chelkov, DY Chen, G Chen, HS Chen, J Chen, JC Chen, ML Chen, SJ Chen, YB Chen, W Cheng, G Cibinetto, F Cossio, XF Cui, HL Dai, JP Dai, XC Dai, A Dbeyssi, D Dedovich, ZY Deng, A Denig, I Denysenko, M Destefanis, F De Mori, Y Ding, C Dong, J Dong, LY Dong, MY Dong, ZL Dou, SX Du, JZ Fan, J Fang, SS Fang, Y Fang, R Farinelli, L Fava, F Feldbauer, G Felici, CQ Feng, M Fritsch, CD Fu, Y Fu, Q Gao, XL Gao, Y Gao, Y Gao, YG Gao, Z Gao, B Garillon, I Garzia, EM Gersabeck, A Gilman, K Goetzen, L Gong, WX Gong, W Gradl, M Greco, LM Gu, MH Gu, S Gu, YT Gu, AQ Guo, LB Guo, RP Guo, YP Guo, A Guskov, S Han, XQ Hao, FA Harris, KL He, FH Heinsius, T Held, YK Heng, M Himmelreich, YR Hou, ZL Hou, HM Hu, JF Hu, T Hu, Y Hu, GS Huang, JS Huang, XT Huang, XZ Huang, N Huesken, T Hussain, W Ikegami Andersson, W Imoehl, M Irshad, Q Ji, QP Ji, XB Ji, XL Ji, HL Jiang, XS Jiang, XY Jiang, JB Jiao, Z Jiao, DP Jin, S Jin, Y Jin, 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, M Kurth, MG Kurth, W Kühn, JS Lange, P Larin, L Lavezzi, H Leithoff, T Lenz, C Li, Cheng Li, DM Li, F Li, FY Li, G Li, HB Li, HJ Li, JC Li, JW Li, Ke Li, LK Li, Lei Li, PL Li, PR Li, QY Li, WD Li, WG Li, XH Li, XL Li, XN Li, ZB Li, ZY Li, H Liang, H Liang, YF Liang, YT Liang, GR Liao, LZ Liao, J Libby, CX Lin, DX Lin, YJ Lin, B Liu, BJ Liu, CX Liu, D Liu, DY Liu, FH Liu, Fang Liu, Feng Liu, HB Liu, HM Liu, Huanhuan Liu, Huihui Liu, JB Liu, JY Liu, K Liu, KY Liu, Ke Liu, LY Liu, Q Liu, SB Liu, T Liu, X Liu, XY Liu, YB Liu, ZA Liu, Zhiqing Liu, YF Long, XC Lou, HJ Lu, JD Lu, JG Lu, Y Lu, YP Lu, CL Luo, MX Luo, PW Luo, T Luo, XL Luo, S Lusso, XR Lyu, FC Ma, HL Ma, LL Ma, MM Ma, QM Ma, XN Ma, XX Ma, XY Ma, YM 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, J Min, TJ Min, RE Mitchell, XH Mo, YJ Mo, C Morales Morales, N Yu Muchnoi, H Muramatsu, A Mustafa, S Nakhoul, Y Nefedov, F Nerling, IB Nikolaev, Z Ning, S Nisar, SL Niu, SL Olsen, Q Ouyang, S Pacetti, Y Pan, M Papenbrock, P Patteri, M Pelizaeus, HP Peng, K Peters, J Pettersson, JL Ping, RG Ping, A Pitka, R Poling, V Prasad, HR Qi, M Qi, TY Qi, S Qian, CF Qiao, N Qin, XP Qin, XS Qin, ZH Qin, JF Qiu, SQ Qu, KH Rashid, K Ravindran, CF Redmer, M Richter, A Rivetti, V Rodin, M Rolo, G Rong, Ch Rosner, M Rump, A Sarantsev, M Savrié, Y Schelhaas, K Schoenning, W Shan, XY Shan, M Shao, CP Shen, PX Shen, XY Shen, HY Sheng, X Shi, XD Shi, JJ Song, QQ Song, XY Song, S Sosio, C Sowa, S Spataro, FF Sui, GX Sun, JF Sun, L Sun, SS Sun, XH Sun, YJ Sun, YK Sun, YZ Sun, ZJ Sun, ZT Sun, YT Tan, CJ Tang, GY Tang, X Tang, V Thoren, B Tsednee, I Uman, B Wang, BL Wang, CW Wang, DY Wang, K Wang, LL Wang, LS Wang, M Wang, MZ Wang, Meng Wang, PL Wang, RM Wang, WP Wang, X Wang, XF Wang, XL Wang, Y Wang, Y Wang, YF Wang, YQ Wang, Z Wang, ZG Wang, ZY Wang, Zongyuan Wang, T Weber, DH Wei, P Weidenkaff, HW Wen, SP Wen, U Wiedner, G Wilkinson, M Wolke, LH Wu, LJ Wu, Z Wu, L Xia, Y Xia, SY Xiao, YJ Xiao, ZJ Xiao, YG Xie, YH Xie, TY Xing, XA Xiong, QL Xiu, GF Xu, JJ Xu, L Xu, QJ Xu, W Xu, XP Xu, F Yan, L Yan, WB Yan, WC Yan, YH Yan, HJ Yang, HX Yang, L Yang, RX Yang, SL Yang, YH Yang, YX Yang, Yifan Yang, ZQ Yang, M Ye, MH Ye, JH Yin, ZY You, BX Yu, CX Yu, JS Yu, T Yu, CZ Yuan, XQ Yuan, Y Yuan, A Yuncu, AA Zafar, Y Zeng, BX Zhang, BY Zhang, CC Zhang, DH Zhang, HH Zhang, HY Zhang, J Zhang, JL Zhang, JQ Zhang, JW Zhang, JY Zhang, JZ Zhang, K Zhang, L Zhang, L Zhang, SF Zhang, TJ Zhang, XY Zhang, Y Zhang, YH Zhang, YT Zhang, Yang Zhang, Yao Zhang, Yi Zhang, Yu Zhang, ZH Zhang, ZP Zhang, ZY Zhang, G Zhao, JW Zhao, JY Zhao, JZ Zhao, Lei Zhao, Ling Zhao, MG Zhao, Q Zhao, SJ Zhao, TC Zhao, YB Zhao, ZG Zhao, A Zhemchugov, B Zheng, JP Zheng, Y Zheng, YH Zheng, B Zhong, L Zhou, LP Zhou, Q Zhou, X Zhou, XK Zhou, XR Zhou, Xiaoyu Zhou, Xu Zhou, AN Zhu, J Zhu, J Zhu, K Zhu, KJ Zhu, SH Zhu, WJ Zhu, XL Zhu, YC Zhu, YS Zhu, ZA Zhu, J Zhuang, BS Zou, JH Zou
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Determination of Strong-Phase Parameters in D→KS,L0π+π−

Physical Review Letters American Physical Society 124:24 (2020) 241802

Abstract:

We report the most precise measurements to date of the strong-phase parameters between D0 and D¯ 0 decays to K0S;Lπþπ− using a sample of 2.93 fb−1 of eþe− annihilation data collected at a center-of-mass energy of 3.773 GeV with the BESIII detector at the BEPCII collider. Our results provide the key inputs for a binned model-independent determination of the Cabibbo-Kobayashi-Maskawa angle γ=ϕ3 with B decays. Using our results, the decay model sensitivity to the γ=ϕ3 measurement is expected to be between 0.7° and 1.2°, approximately a factor of three smaller than that achievable with previous measurements, based on the studies of the simulated data. The improved precision of this work ensures that measurements of γ=ϕ3 will not be limited by knowledge of strong phases for the next decade. Furthermore, our results provide critical input for other flavor-physics investigations, including charm mixing, other measurements of CP violation, and the measurement of strong-phase parameters for other D-decay modes.
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Model-independent determination of the relative strong-phase difference between D0 and D¯0→KS,L0π+π− and its impact on the measurement of the CKM angle γ/ϕ3

Physical Review D American Physical Society (APS) 101:11 (2020) 112002

Authors:

M Ablikim, Mn Achasov, P Adlarson, S Ahmed, M Albrecht, M Alekseev, D Ambrose, A Amoroso, Ff An, Q An, Anita, Y Bai, O Bakina, R Baldini Ferroli, I Balossino, Y Ban, K Begzsuren, Jv Bennett, N Berger, M Bertani, D Bettoni, F Bianchi, J Biernat, J Bloms, I Boyko
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