Measurement of the cross section of e+e−→ ηπ+π− at center-of-mass energies from 3.872 GeV to 4.700 GeV

Journal of High Energy Physics Springer Nature 2022:12 (2022) 153

Authors:

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

First observation and branching fraction measurement of the $\Lambda_b^0\to D_s^- p$ decay

(2022)

Authors:

LHCb collaboration, R Aaij, ASW Abdelmotteleb, C Abellan Beteta, F Abudinén, T Ackernley, B Adeva, M Adinolfi, P Adlarson, H Afsharnia, C Agapopoulou, CA Aidala, Z Ajaltouni, S Akar, K Akiba, P Albicocco, J Albrecht, F Alessio, M Alexander, A Alfonso Albero, Z Aliouche, P Alvarez Cartelle, R Amalric, S Amato, JL Amey, Y Amhis, L An, L Anderlini, M Andersson, A Andreianov, M Andreotti, D Andreou, D Ao, F Archilli, A Artamonov, M Artuso, E Aslanides, M Atzeni, B Audurier, I Bachiller Perea, S Bachmann, M Bachmayer, JJ Back, A Bailly-reyre, P Baladron Rodriguez, V Balagura, W Baldini, J Baptista de Souza Leite, M Barbetti, RJ Barlow, S Barsuk, W Barter, M Bartolini, F Baryshnikov, JM Basels, G Bassi, B Batsukh, A Battig, A Bay, A Beck, M Becker, F Bedeschi, IB Bediaga, A Beiter, S Belin, V Bellee, K Belous, I Belov, I Belyaev, G Benane, G Bencivenni, E Ben-Haim, A Berezhnoy, R Bernet, S Bernet Andres, D Berninghoff, HC Bernstein, C Bertella, A Bertolin, C Betancourt, F Betti, Ia Bezshyiko, S Bhasin, J Bhom, L Bian, MS Bieker, NV Biesuz, P Billoir, A Biolchini, M Birch, FCR Bishop, A Bitadze, A Bizzeti, MP Blago, T Blake, F Blanc, JE Blank, S Blusk, D Bobulska, JA Boelhauve, O Boente Garcia, T Boettcher, A Boldyrev, CS Bolognani, R Bolzonella, N Bondar, F Borgato, S Borghi, M Borsato, JT Borsuk, SA Bouchiba, TJV Bowcock, A Boyer, C Bozzi, MJ Bradley, S Braun, A Brea Rodriguez, J Brodzicka, A Brossa Gonzalo, J Brown, D Brundu, A Buonaura, L Buonincontri, AT Burke, C Burr, A Bursche, A Butkevich, JS Butter, J Buytaert, W Byczynski, S Cadeddu, H Cai, R Calabrese, L Calefice, S Cali, M Calvi, M Calvo Gomez, P Campana, DH Campora Perez, AF Campoverde Quezada, S Capelli, L Capriotti, A Carbone, R Cardinale, A Cardini, P Carniti, L Carus, A Casais Vidal, R Caspary, G Casse, M Cattaneo, G Cavallero, V Cavallini, S Celani, J Cerasoli, D Cervenkov, AJ Chadwick, I Chahrour, MG Chapman, M Charles, Ph Charpentier, CA Chavez Barajas, M Chefdeville, C Chen, S Chen, A Chernov, S Chernyshenko, V Chobanova, S Cholak, M Chrzaszcz, A Chubykin, V Chulikov, P Ciambrone, MF Cicala, X Cid Vidal, G Ciezarek, P Cifra, G Ciullo, PEL Clarke, M Clemencic, HV Cliff, J Closier, JL Cobbledick, V Coco, JAB Coelho, J Cogan, E Cogneras, L Cojocariu, P Collins, T Colombo, L Congedo, A Contu, N Cooke, I Corredoira, G Corti, B Couturier, DC Craik, M Cruz Torres, R Currie, CL Da Silva, S Dadabaev, L Dai, X Dai, E Dall'Occo, J Dalseno, C D'Ambrosio, J Daniel, A Danilina, P d'Argent, JE Davies, A Davis, O De Aguiar Francisco, J de Boer, K De Bruyn, S De Capua, M De Cian, U De Freitas Carneiro Da Graca, E De Lucia, JM De Miranda, L De Paula, M De Serio, D De Simone, P De Simone, F De Vellis, JA de Vries, CT Dean, F Debernardis, D Decamp, V Dedu, L Del Buono, B Delaney, H-P Dembinski, V Denysenko, O Deschamps, F Dettori, B Dey, P Di Nezza, I Diachkov, S Didenko, L Dieste Maronas, S Ding, V Dobishuk, A Dolmatov, C Dong, AM Donohoe, F Dordei, AC dos Reis, L Douglas, AG Downes, P Duda, MW Dudek, L Dufour, V Duk, P Durante, MM Duras, JM Durham, D Dutta, A Dziurda, A Dzyuba, S Easo, U Egede, V Egorychev, C Eirea Orro, S Eisenhardt, E Ejopu, S Ek-In, L Eklund, J Ellbracht, S Ely, A Ene, E Epple, S Escher, J Eschle, S Esen, T Evans, F Fabiano, LN Falcao, Y Fan, B Fang, L Fantini, M Faria, S Farry, D Fazzini, L Felkowski, M Feo, M Fernandez Gomez, AD Fernez, F Ferrari, L Ferreira Lopes, F Ferreira Rodrigues, S Ferreres Sole, M Ferrillo, M Ferro-Luzzi, S Filippov, RA Fini, M Fiorini, M Firlej, KM Fischer, DS Fitzgerald, C Fitzpatrick, T Fiutowski, F Fleuret, M Fontana, F Fontanelli, R Forty, D Foulds-Holt, V Franco Lima, M Franco Sevilla, M Frank, E Franzoso, G Frau, C Frei, DA Friday, L Frontini, J Fu, Q Fuehring, T Fulghesu, E Gabriel, G Galati, MD Galati, A Gallas Torreira, D Galli, S Gambetta, M Gandelman, P Gandini, Y Gao, Y Gao, M Garau, LM Garcia Martin, P Garcia Moreno, J García Pardiñas, B Garcia Plana, FA Garcia Rosales, L Garrido, C Gaspar, RE Geertsema, D Gerick, LL Gerken, E Gersabeck, M Gersabeck, T Gershon, L Giambastiani, V Gibson, HK Giemza, AL Gilman, M Giovannetti, A Gioventù, P Gironella Gironell, C Giugliano, MA Giza, K Gizdov, EL Gkougkousis, VV Gligorov, C Göbel, E Golobardes, D Golubkov, A Golutvin, A Gomes, S Gomez Fernandez, F Goncalves Abrantes, M Goncerz, G Gong, IV Gorelov, C Gotti, JP Grabowski, T Grammatico, LA Granado Cardoso, E Graugés, E Graverini, G Graziani, AT Grecu, LM Greeven, NA Grieser, L Grillo, S Gromov, BR Gruberg Cazon, C Gu, M Guarise, M Guittiere, PA Günther, E Gushchin, A Guth, Y Guz, T Gys, T Hadavizadeh, C Hadjivasiliou, G Haefeli, C Haen, J Haimberger, SC Haines, T Halewood-leagas, MM Halvorsen, PM Hamilton, J Hammerich, Q Han, X Han, EB Hansen, S Hansmann-Menzemer, L Hao, N Harnew, T Harrison, C Hasse, M Hatch, J He, K Heijhoff, F Hemmer, C Henderson, RDL Henderson, AM Hennequin, K Hennessy, L Henry, J Herd, J Heuel, A Hicheur, D Hill, M Hilton, SE Hollitt, J Horswill, R Hou, Y Hou, J Hu, J Hu, W Hu, X Hu, W Huang, X Huang, W Hulsbergen, RJ Hunter, M Hushchyn, D Hutchcroft, P Ibis, M Idzik, D Ilin, P Ilten, A Inglessi, A Iniukhin, A Ishteev, K Ivshin, R Jacobsson, H Jage, SJ Jaimes Elles, S Jakobsen, E Jans, BK Jashal, A Jawahery, V Jevtic, E Jiang, X Jiang, Y Jiang, M John, D Johnson, CR Jones, TP Jones, B Jost, N Jurik, I Juszczak, S Kandybei, Y Kang, M Karacson, D Karpenkov, M Karpov, JW Kautz, F Keizer, DM Keller, M Kenzie, T Ketel, B Khanji, A Kharisova, S Kholodenko, G Khreich, T Kirn, VS Kirsebom, O Kitouni, S Klaver, N Kleijne, K Klimaszewski, MR Kmiec, S Koliiev, L Kolk, A Kondybayeva, A Konoplyannikov, P Kopciewicz, R Kopecna, P Koppenburg, M Korolev, I Kostiuk, O Kot, S Kotriakhova, A Kozachuk, P Kravchenko, L Kravchuk, RD Krawczyk, M Kreps, S Kretzschmar, P Krokovny, W Krupa, W Krzemien, J Kubat, S Kubis, W Kucewicz, M Kucharczyk, V Kudryavtsev, E Kulikova, A Kupsc, D Lacarrere, G Lafferty, A Lai, A Lampis, D Lancierini, C Landesa Gomez, JJ Lane, R Lane, C Langenbruch, J Langer, O Lantwin, T Latham, F Lazzari, M Lazzaroni, R Le Gac, SH Lee, R Lefèvre, A Leflat, S Legotin, P Lenisa, O Leroy, T Lesiak, B Leverington, A Li, H Li, K Li, P Li, P-R Li, S Li, T Li, T Li, Y Li, Z Li, X Liang, C Lin, T Lin, R Lindner, V Lisovskyi, R Litvinov, G Liu, H Liu, Q Liu, S Liu, A Lobo Salvia, A Loi, R Lollini, J Lomba Castro, I Longstaff, JH Lopes, A Lopez Huertas, S López Soliño, GH Lovell, Y Lu, C Lucarelli, D Lucchesi, S Luchuk, M Lucio Martinez, V Lukashenko, Y Luo, A Lupato, E Luppi, A Lusiani, K Lynch, X-R Lyu, R Ma, S Maccolini, F Machefert, F Maciuc, I Mackay, V Macko, LR Madhan Mohan, A Maevskiy, D Maisuzenko, MW Majewski, JJ Malczewski, S Malde, B Malecki, A Malinin, T Maltsev, G Manca, G Mancinelli, C Mancuso, R Manera Escalero, D Manuzzi, CA Manzari, D Marangotto, JF Marchand, U Marconi, S Mariani, C Marin Benito, J Marks, AM Marshall, PJ Marshall, G Martelli, G Martellotti, L Martinazzoli, M Martinelli, D Martinez Santos, F Martinez Vidal, A Massafferri, M Materok, R Matev, A Mathad, V Matiunin, C Matteuzzi, KR Mattioli, A Mauri, E Maurice, J Mauricio, M Mazurek, M McCann, L Mcconnell, TH McGrath, NT McHugh, A McNab, R McNulty, JV Mead, B Meadows, G Meier, D Melnychuk, S Meloni, M Merk, A Merli, L Meyer Garcia, D Miao, M Mikhasenko, DA Milanes, E Millard, M Milovanovic, M-N Minard, A Minotti, T Miralles, SE Mitchell, B Mitreska, DS Mitzel, A Mödden, RA Mohammed, RD Moise, S Mokhnenko, T Mombächer, M Monk, IA Monroy, S Monteil, G Morello, MJ Morello, MP Morgenthaler, J Moron, AB Morris, AG Morris, R Mountain, H Mu, E Muhammad, F Muheim, M Mulder, K Müller, CH Murphy, D Murray, R Murta, P Muzzetto, P Naik, T Nakada, R Nandakumar, T Nanut, I Nasteva, M Needham, N Neri, S Neubert, N Neufeld, P Neustroev, R Newcombe, J Nicolini, D Nicotra, EM Niel, S Nieswand, N Nikitin, NS Nolte, C Normand, J Novoa Fernandez, G Nowak, C Nunez, A Oblakowska-Mucha, V Obraztsov, T Oeser, S Okamura, R Oldeman, F Oliva, CJG Onderwater, RH O'Neil, JM Otalora Goicochea, T Ovsiannikova, P Owen, A Oyanguren, O Ozcelik, KO Padeken, B Pagare, PR Pais, T Pajero, A Palano, M Palutan, Y Pan, G Panshin, L Paolucci, A Papanestis, M Pappagallo, LL Pappalardo, C Pappenheimer, W Parker, C Parkes, B Passalacqua, G Passaleva, A Pastore, M Patel, C Patrignani, CJ Pawley, A Pellegrino, M Pepe Altarelli, S Perazzini, D Pereima, A Pereiro Castro, P Perret, K Petridis, A Petrolini, A Petrov, S Petrucci, M Petruzzo, H Pham, A Philippov, R Piandani, L Pica, M Piccini, B Pietrzyk, G Pietrzyk, M Pili, D Pinci, F Pisani, M Pizzichemi, V Placinta, J Plews, M Plo Casasus, F Polci, M Poli Lener, A Poluektov, N Polukhina, I Polyakov, E Polycarpo, S Ponce, D Popov, S Poslavskii, K Prasanth, L Promberger, C Prouve, V Pugatch, V Puill, G Punzi, HR Qi, W Qian, N Qin, S Qu, R Quagliani, NV Raab, B Rachwal, JH Rademacker, R Rajagopalan, M Rama, M Ramos Pernas, MS Rangel, F Ratnikov, G Raven, M Rebollo De Miguel, F Redi, J Reich, F Reiss, C Remon Alepuz, Z Ren, PK Resmi, R Ribatti, AM Ricci, S Ricciardi, K Richardson, M Richardson-Slipper, K Rinnert, P Robbe, G Robertson, AB Rodrigues, E Rodrigues, E Rodriguez Fernandez, JA Rodriguez Lopez, E Rodriguez Rodriguez, DL Rolf, A Rollings, P Roloff, V Romanovskiy, M Romero Lamas, A Romero Vidal, JD Roth, M Rotondo, MS Rudolph, T Ruf, RA Ruiz Fernandez, J Ruiz Vidal, A Ryzhikov, J Ryzka, JJ Saborido Silva, N Sagidova, N Sahoo, B Saitta, M Salomoni, C Sanchez Gras, I Sanderswood, R Santacesaria, C Santamarina Rios, M Santimaria, E Santovetti, D Saranin, G Sarpis, M Sarpis, A Sarti, C Satriano, A Satta, M Saur, D Savrina, H Sazak, LG Scantlebury Smead, A Scarabotto, S Schael, S Scherl, M Schiller, H Schindler, M Schmelling, B Schmidt, S Schmitt, O Schneider, A Schopper, M Schubiger, S Schulte, MH Schune, R Schwemmer, B Sciascia, A Sciuccati, S Sellam, A Semennikov, M Senghi Soares, A Sergi, N Serra, L Sestini, A Seuthe, Y Shang, DM Shangase, M Shapkin, I Shchemerov, L Shchutska, T Shears, L Shekhtman, Z Shen, S Sheng, V Shevchenko, B Shi, EB Shields, Y Shimizu, E Shmanin, R Shorkin, JD Shupperd, BG Siddi, R Silva Coutinho, G Simi, S Simone, M Singla, N Skidmore, R Skuza, T Skwarnicki, MW Slater, JC Smallwood, JG Smeaton, E Smith, K Smith, M Smith, A Snoch, L Soares Lavra, MD Sokoloff, FJP Soler, A Solomin, A Solovev, I Solovyev, R Song, FL Souza De Almeida, B Souza De Paula, B Spaan, E Spadaro Norella, E Spedicato, E Spiridenkov, P Spradlin, V Sriskaran, F Stagni, M Stahl, S Stahl, S Stanislaus, EN Stein, O Steinkamp, O Stenyakin, H Stevens, S Stone, D Strekalina, Y Su, F Suljik, J Sun, L Sun, Y Sun, P Svihra, PN Swallow, K Swientek, A Szabelski, T Szumlak, M Szymanski, Y Tan, S Taneja, MD Tat, A Terentev, F Teubert, E Thomas, DJD Thompson, KA Thomson, H Tilquin, V Tisserand, S T'Jampens, M Tobin, L Tomassetti, G Tonani, X Tong, D Torres Machado, DY Tou, SM Trilov, C Trippl, G Tuci, N Tuning, A Ukleja, DJ Unverzagt, A Usachov, A Ustyuzhanin, U Uwer, A Vagner, V Vagnoni, A Valassi, G Valenti, N Valls Canudas, M Van Dijk, H Van Hecke, E van Herwijnen, CB Van Hulse, M van Veghel, R Vazquez Gomez, P Vazquez Regueiro, C Vázquez Sierra, S Vecchi, JJ Velthuis, M Veltri, A Venkateswaran, M Veronesi, M Vesterinen, D Vieira, M Vieites Diaz, X Vilasis-Cardona, E Vilella Figueras, A Villa, P Vincent, FC Volle, D vom Bruch, A Vorobyev, V Vorobyev, N Voropaev, K Vos, C Vrahas, J Walsh, EJ Walton, G Wan, C Wang, G Wang, J Wang, J Wang, J Wang, J Wang, M Wang, R Wang, X Wang, Y Wang, Z Wang, Z Wang, Z Wang, JA Ward, NK Watson, D Websdale, Y Wei, BDC Westhenry, DJ White, M Whitehead, AR Wiederhold, D Wiedner, G Wilkinson, MK Wilkinson, I Williams, M Williams, MRJ Williams, R Williams, FF Wilson, W Wislicki, M Witek, L Witola, CP Wong, G Wormser, SA Wotton, H Wu, J Wu, K Wyllie, Z Xiang, Y Xie, A Xu, J Xu, L Xu, L Xu, M Xu, Q Xu, Z Xu, Z Xu, D Yang, S Yang, X Yang, Y Yang, Z Yang, Z Yang, LE Yeomans, V Yeroshenko, H Yeung, H Yin, J Yu, X Yuan, E Zaffaroni, M Zavertyaev, M Zdybal, M Zeng, C Zhang, D Zhang, L Zhang, S Zhang, S Zhang, Y Zhang, Y Zhang, Y Zhao, A Zharkova, A Zhelezov, Y Zheng, T Zhou, X Zhou, Y Zhou, V Zhovkovska, X Zhu, X Zhu, Z Zhu, V Zhukov, Q Zou, S Zucchelli, D Zuliani, G Zunica

Search for hidden-charm tetraquark with strangeness in *

Chinese Physics C IOP Publishing 47:3 (2022) 033001-033001

Authors:

M Ablikim, MN Achasov, P Adlarson, M Albrecht, R Aliberti, A Amoroso, MR An, Q An, Y Bai, O Bakina, R Baldini Ferroli, I Balossino, Y Ban, V Batozskaya, D Becker, K Begzsuren, N Berger, M Bertani, D Bettoni, F Bianchi, E Bianco, J Bloms, A Bortone, I Boyko, RA Briere, A Brueggemann, H Cai, X Cai, A Calcaterra, GF Cao, N Cao, SA Cetin, JF Chang, WL Chang, GR Che, G Chelkov, C Chen, Chao Chen, G Chen, HS Chen, ML Chen, SJ Chen, SM Chen, T Chen, XR Chen, XT Chen, YB Chen, ZJ Chen, WS Cheng, SK Choi

Abstract:

We report a search for a heavier partner of the recently observed state, denoted as , in the process , based on collision data collected at the center-of-mass energies of , 4.682 and 4.699 GeV with the BESIII detector. The is of interest as it is expected to be a candidate for a hidden-charm and open-strange tetraquark. A partial-reconstruction technique is used to isolate recoil-mass spectra, which are probed for a potential contribution from . We find an excess of candidates with a significance of , after considering systematic uncertainties, at a mass of . As the data set is limited in size, the upper limits are evaluated at the 90% confidence level on the product of the Born cross sections and the branching fraction of , under different assumptions of the mass from 4.120 to 4.140 MeV and of the width from 10 to 50 MeV at the three center-of-mass energies. The upper limits of are found to be at the level of pb at each energy. Larger data samples are needed to confirm the state and clarify its nature in the coming years

Partial wave analysis of the charmed baryon hadronic decay $$ {\Lambda}_c^{+} $$ → Λπ+π0

Journal of High Energy Physics Springer 2022:12 (2022) 33

Authors:

M Ablikim, MN Achasov, P Adlarson, M Albrecht, R Aliberti, A Amoroso, MR An, Q An, XH Bai, Y Bai, O Bakina, R Baldini Ferroli, I Balossino, Y Ban, V Batozskaya, D Becker, K Begzsuren, N Berger, M Bertani, D Bettoni, F Bianchi, J Bloms, A Bortone, I Boyko, RA Briere, A Brueggemann, H Cai, X Cai, A Calcaterra, GF Cao, N Cao, SA Cetin, JF Chang, WL Chang, G Chelkov, C Chen, Chao Chen, G Chen, HS Chen, ML Chen, SJ Chen, SM Chen, T Chen, XR Chen, XT Chen, YB Chen, ZJ Chen, WS Cheng, SK Choi, X Chu

Abstract:

A summary of results in heavy flavour physics from Run 1 of the LHC is presented. Topics discussed include spectroscopy, mixing, CP violation and rare decays of charmed and beauty hadrons.Comment: 25 pages, 9 figures (total 17 subfigures). Invited review for Comptes Rendus de Physique de l'Academie des Science

Observation of the decay ψ(3686) → $$ {\Sigma}^{-}{\overline{\Sigma}}^{+} $$ and measurement of its angular distribution

Journal of High Energy Physics Springer 2022:12 (2022) 16

Authors:

M Ablikim, MN Achasov, P Adlarson, M Albrecht, R Aliberti, A Amoroso, MR An, Q An, XH Bai, Y Bai, O Bakina, R Baldini Ferroli, I Balossino, Y Ban, V Batozskaya, D Becker, K Begzsuren, N Berger, M Bertani, D Bettoni, F Bianchi, J Bloms, A Bortone, I Boyko, RA Briere, A Brueggemann, H Cai, X Cai, A Calcaterra, GF Cao, N Cao, SA Cetin, JF Chang, WL Chang, G Chelkov, C Chen, Chao Chen, G Chen, HS Chen, ML Chen, SJ Chen, SM Chen, T Chen, XR Chen, XT Chen, YB Chen, ZJ Chen, WS Cheng, SK Choi, X Chu

Abstract:

Two related searches for phenomena beyond the standard model (BSM) are performed using events with hadronic jets and significant transverse momentum imbalance. The results are based on a sample of proton–proton collisions at a center-of-mass energy of 13TeV, collected by the CMS experiment at the LHC in 2016–2018 and corresponding to an integrated luminosity of 137fb⁻¹. The first search is inclusive, based on signal regions defined by the hadronic energy in the event, the jet multiplicity, the number of jets identified as originating from bottom quarks, and the value of the kinematic variable M_(T2) for events with at least two jets. For events with exactly one jet, the transverse momentum of the jet is used instead. The second search looks in addition for disappearing tracks produced by BSM long-lived charged particles that decay within the volume of the tracking detector. No excess event yield is observed above the predicted standard model background. This is used to constrain a range of BSM models that predict the following: the pair production of gluinos and squarks in the context of supersymmetry models conserving R-parity, with or without intermediate long-lived charginos produced in the decay chain; the resonant production of a colored scalar state decaying to a massive Dirac fermion and a quark; or the pair production of scalar and vector leptoquarks each decaying to a neutrino and a top, bottom, or light-flavor quark. In most of the cases, the results obtained are the most stringent constraints to date