Study of coherent J/ψ production in lead-lead collisions at $$ \sqrt{{\mathrm{s}}_{\mathrm{NN}}} $$ = 5 TeV

Journal of High Energy Physics Springer 2022:7 (2022) 117

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, Z Aliouche, G Alkhazov, P Alvarez Cartelle, S Amato, Y Amhis, L An, L Anderlini, A Andreianov, M Andreotti, F Archilli, A Artamonov

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

Constraints on the CKM angle γ from B± → Dh± decays using D → h±h′∓π0 final states

Journal of High Energy Physics Springer 2022:7 (2022) 99

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:

A bstract A data sample collected with the LHCb detector corresponding to an integrated luminosity of 9 fb − 1 is used to measure eleven CP violation observables in B ± → Dh ± decays, where h is either a kaon or a pion. The neutral D meson decay is reconstructed in the three-body final states: K ± π ∓ π 0 ; π + π − π 0 ; K + K − π 0 and the suppressed π ± K ∓ π 0 combination. The mode where a large CP asymmetry is expected, B ± → [ π ± K ∓ π 0 ] D K ± , is observed with a significance greater than seven standard deviations. The ratio of the partial width of this mode relative to that of the favoured mode, B ± → [ K ± π ∓ π 0 ] D K ± , is R ADS( K ) = (1 . 27 ± 0 . 16 ± 0 . 02) × 10 − 2 . Evidence for a large CP asymmetry is also seen: A ADS( K ) = −0 . 38 ± 0 . 12 ± 0 . 02. Constraints on the CKM angle γ are calculated from the eleven reported observables.

Observation of J/ψ Electromagnetic Dalitz Decays to X(1835), X(2120), and X(2370)

Physical Review Letters American Physical Society (APS) 129:2 (2022) 022002

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, 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, S Gu, YT Gu, CY Guan, AQ Guo, LB Guo, RP Guo, YP Guo, A Guskov, TT Han, WY Han, XQ Hao, FA Harris, KL He, FH Heinsius, CH Heinz, T Held, 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, 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, BJ Liu, CX Liu, D Liu, FH Liu, Fang Liu, Feng Liu, HB Liu, HM Liu, Huanhuan Liu, Huihui Liu, JB Liu, JL Liu, JY Liu, K Liu, KY Liu, L Liu, MH Liu, PL Liu, Q Liu, Q Liu, SB Liu, Shuai 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, F C., H L., L L., M M., Q M., R Q., R T., X X., X Y., 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, X Pan, Y Pan, A Pathak, P Patteri, M Pelizaeus, HP Peng, K Peters, J Pettersson, JL Ping, RG Ping, R Poling, V Prasad, H Qi, HR Qi, KH Qi, M Qi, TY Qi, S Qian, WB Qian, Z 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, HS Sang, A Sarantsev, Y Schelhaas, C Schnier, K Schoenning, M Scodeggio, DC Shan, W Shan, XY Shan, JF Shangguan, M Shao, CP Shen, HF Shen, PX Shen, XY Shen, HC Shi, RS Shi, X Shi, XD Shi, 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, WY Sun, X Sun, YJ Sun, YK 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, W Wang, WH Wang, WP Wang, X Wang, XF Wang, XL Wang, Y 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, Z Wu, L Xia, H Xiao, SY Xiao, ZJ Xiao, XH Xie, YG Xie, YH Xie, TY Xing, GF Xu, QJ Xu, W Xu, XP Xu, YC Xu, F Yan, L Yan, WB Yan, WC Yan, Xu 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, A Yuncu, 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, 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, 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, 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

Search for the lepton-flavour violating decays $B^0 \to K^{*0} \mu^\pm e^\mp$ and $B_s^0 \to \phi \mu^\pm e^\mp$

(2022)

Authors:

LHCb collaboration, R Aaij, ASW Abdelmotteleb, C Abellan Beteta, F Abudinén, T Ackernley, B Adeva, M Adinolfi, H Afsharnia, C Agapopoulou, CA Aidala, S Aiola, Z Ajaltouni, S Akar, K Akiba, J Albrecht, F Alessio, M Alexander, A Alfonso Albero, Z Aliouche, P Alvarez Cartelle, 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, 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, V Belavin, S Belin, V Bellee, K Belous, I Belov, I Belyaev, G Bencivenni, E Ben-Haim, A Berezhnoy, R Bernet, D Berninghoff, HC Bernstein, C Bertella, A Bertolin, C Betancourt, F Betti, Ia Bezshyiko, S Bhasin, J Bhom, L Bian, MS Bieker, NV Biesuz, S Bifani, P Billoir, A Biolchini, M Birch, FCR Bishop, A Bitadze, A Bizzeti, MP Blago, T Blake, F Blanc, S Blusk, D Bobulska, JA Boelhauve, O Boente Garcia, T Boettcher, A Boldyrev, N Bondar, 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, 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, R Calladine, M Calvi, M Calvo Gomez, P Camargo Magalhaes, P Campana, DH Campora Perez, AF Campoverde Quezada, S Capelli, L Capriotti, A Carbone, G Carboni, R Cardinale, A Cardini, I Carli, 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, 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, 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, G Coombs, I Corredoira, G Corti, B Couturier, DC Craik, J Crkovská, M Cruz Torres, R Currie, CL Da Silva, S Dadabaev, L Dai, E Dall'Occo, J Dalseno, C D'Ambrosio, 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, A Di Cicco, P Di Nezza, S Didenko, L Dieste Maronas, S Ding, V Dobishuk, A Dolmatov, C Dong, AM Donohoe, F Dordei, AC dos Reis, L Douglas, AG Downes, MW Dudek, L Dufour, V Duk, P Durante, JM Durham, D Dutta, A Dziurda, A Dzyuba, S Easo, U Egede, V Egorychev, S Eidelman, S Eisenhardt, S Ek-In, L Eklund, S Ely, A Ene, E Epple, S Escher, J Eschle, S Esen, T Evans, LN Falcao, Y Fan, B Fang, S Farry, D Fazzini, M Feo, 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, J Fu, Q Fuehring, E Gabriel, G Galati, A Gallas Torreira, D Galli, S Gambetta, Y Gan, M Gandelman, P Gandini, 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, 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, K Heinicke, RDL Henderson, AM Hennequin, K Hennessy, L Henry, J Heuel, A Hicheur, D Hill, M Hilton, SE Hollitt, 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, X 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, T Kirn, VS Kirsebom, O Kitouni, S Klaver, N Kleijne, K Klimaszewski, MR Kmiec, S Koliiev, 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, W Kucewicz, M Kucharczyk, V Kudryavtsev, GJ Kunde, D Lacarrere, G Lafferty, A Lai, A Lampis, D Lancierini, JJ Lane, R Lane, G Lanfranchi, 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, H Li, K Li, P Li, S 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, 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, L Ma, R Ma, S Maccolini, F Machefert, F Maciuc, V Macko, P Mackowiak, S Maddrell-Mander, LR Madhan Mohan, A Maevskiy, D Maisuzenko, MW Majewski, JJ Malczewski, S Malde, B Malecki, A Malinin, T Maltsev, H Malygina, G Manca, G Mancinelli, D Manuzzi, CA Manzari, D Marangotto, JM Maratas, JF Marchand, U Marconi, S Mariani, C Marin Benito, M Marinangeli, 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, M Mikhasenko, DA Milanes, E Millard, M Milovanovic, M-N Minard, A Minotti, SE Mitchell, B Mitreska, DS Mitzel, A Mödden, RA Mohammed, RD Moise, S Mokhnenko, T Mombächer, IA Monroy, S Monteil, M Morandin, G Morello, MJ Morello, J Moron, AB Morris, AG Morris, R Mountain, H Mu, 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, EM Niel, S Nieswand, N Nikitin, NS Nolte, C Normand, C Nunez, A Oblakowska-Mucha, V Obraztsov, T Oeser, DP O'Hanlon, S Okamura, R Oldeman, F Oliva, ME Olivares, 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, 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 Pearce, A Pellegrino, M Pepe Altarelli, S Perazzini, D Pereima, A Pereiro Castro, P Perret, M Petric, 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, M Poliakova, A Poluektov, N Polukhina, I Polyakov, E Polycarpo, S Ponce, D Popov, S 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, RI Rabadan Trejo, B Rachwal, JH Rademacker, R Rajagopalan, M Rama, M Ramos Pernas, MS Rangel, F Ratnikov, G Raven, M Rebollo De Miguel, F Redi, F Reiss, C Remon Alepuz, Z Ren, V Renaudin, PK Resmi, R Ribatti, AM Ricci, S Ricciardi, K Rinnert, P Robbe, G Robertson, AB Rodrigues, E Rodrigues, JA Rodriguez Lopez, E Rodriguez Rodriguez, 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, EB Shields, Y Shimizu, E Shmanin, JD Shupperd, BG Siddi, R Silva Coutinho, G Simi, S Simone, M Singla, N Skidmore, R Skuza, T Skwarnicki, MW Slater, I Slazyk, JC Smallwood, JG Smeaton, E Smith, M Smith, A Snoch, L Soares Lavra, MD Sokoloff, FJP Soler, A Solomin, A Solovev, I Solovyev, FL Souza De Almeida, B Souza De Paula, B Spaan, E Spadaro Norella, E Spiridenkov, P Spradlin, V Sriskaran, F Stagni, M Stahl, S Stahl, S Stanislaus, O Steinkamp, O Stenyakin, H Stevens, S Stone, D Strekalina, F Suljik, J Sun, L Sun, Y Sun, P Svihra, PN Swallow, K Swientek, A Szabelski, T Szumlak, M Szymanski, S Taneja, AR Tanner, 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, E Trifonova, SM Trilov, C Trippl, G Tuci, A Tully, N Tuning, A Ukleja, DJ Unverzagt, E Ursov, A Usachov, A Ustyuzhanin, U Uwer, A Vagner, V Vagnoni, A Valassi, G Valenti, N Valls Canudas, M van Beuzekom, M Van Dijk, H Van Hecke, E van Herwijnen, 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, R Waldi, J Walsh, C Wang, J Wang, J Wang, J Wang, J Wang, M Wang, R Wang, Y Wang, Z Wang, Z Wang, Z Wang, JA Ward, NK Watson, D Websdale, C Weisser, 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, K Wyllie, Z Xiang, D Xiao, Y Xie, A Xu, J Xu, L Xu, M Xu, Q Xu, Z Xu, Z Xu, D Yang, S Yang, Y Yang, Z Yang, Z Yang, LE Yeomans, H Yin, J Yu, X Yuan, E Zaffaroni, M Zavertyaev, M Zdybal, O Zenaiev, M Zeng, D Zhang, L Zhang, S Zhang, S Zhang, Y Zhang, Y Zhang, 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

Performance of the LHCb RICH detectors during LHC Run 2

Journal of Instrumentation IOP Publishing 17:07 (2022) P07013-P07013

Authors:

R Calabrese, M Fiorini, E Luppi, L Minzoni, I Slazyk, L Tomassetti, M Bartolini, R Cardinale, F Fontanelli, A Petrolini, A Pistone, M Calvi, C Matteuzzi, A Lupato, G Simi, M Kucharczyk, B Malecki, M Witek, S Benson, M Blago, G Cavallero, A Contu, C D'Ambrosio, C Frei, T Gys

Abstract:

The TORCH detector aims to provide K/π (K/p) separation up to a momentum of about 10 (15) [Formula presented] by measuring their time-of-flight at the LHCb detector. Prompt Cherenkov photons are produced in a quartz radiator bar of 10 mm thickness, and propagated via total internal reflection to the periphery of the detector, where they are focused onto an array of microchannel plate photomultipliers that measure the photon arrival time and position. Pattern recognition techniques are used to compare the likelihood that the detector image is due to a given particle hypothesis. Good performance is obtained even for very high detector occupancies