Test of Lepton Universality in b → s ℓ+ ℓ− Decays

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

doi:10.1103/PhysRevLett.131.051803

The first simultaneous test of muon-electron universality using B+ → K+ ℓ+ ℓ− and B0 → K*0 ℓ+ ℓ− decays is performed, in two ranges of the dilepton invariant-mass squared, q^2. The analysis uses beauty mesons produced in proton-proton collisions collected with the LHCb detector between 2011 and 2018, corresponding to an integrated luminosity of 9 fb^−1. Each of the four lepton universality measurements reported is either the first in the given q^2 interval or supersedes previous LHCb measurements. The results are compatible with the predictions of the Standard Model.

Aaij, R., Abdelmotteleb, A.S.W., Abellan Beteta, C., Abudinén, F., Ackernley, T., Adeva, B., et al. (2023). Test of Lepton Universality in b → s ℓ+ ℓ− Decays. PHYSICAL REVIEW LETTERS, 131(5), 1-13 [10.1103/PhysRevLett.131.051803].