Test of lepton universality in beauty-quark decays
Creators: name: LHCb Collaboration
name: Aaij, R.
name: Beteta, C. Abellán
name: Ackernley, T.
name: Adeva, B.
name: Adinolfi, M.
name: Afsharnia, H.
name: Aidala, C. A.
name: Aiola, S.
name: Ajaltouni, Z.
name: Akar, S.
name: Albrecht, J.
name: Alessio, F.
name: Alexander, M.
name: Albero, A. Alfonso
name: Aliouche, Z.
name: Alkhazov, G.
name: Cartelle, P. Alvarez
name: Amato, S.
name: Amhis, Y.
name: An, L.
name: Anderlini, L.
name: Andreianov, A.
name: Andreotti, M.
name: Archilli, F.
name: Artamonov, A.
name: Artuso, M.
name: Arzymatov, K.
name: Aslanides, E.
name: Atzeni, M.
name: Audurier, B.
name: Bachmann, S.
name: Bachmayer, M.
name: Back, J. J.
name: Rodriguez, P. Baladron
name: Balagura, V.
name: Baldini, W.
name: Leite, J. Baptista
name: Barlow, R. J.
name: Barsuk, S.
name: Barter, W.
name: Bartolini, M.
name: Baryshnikov, F.
name: Basels, J. M.
name: Bassi, G.
name: Batsukh, B.
name: Battig, A.
name: Bay, A.
name: Becker, M.
name: Bedeschi, F.
name: Bediaga, I.
name: Beiter, A.
name: Belavin, V.
name: Belin, S.
name: Bellee, V.
name: Belous, K.
name: Belov, I.
name: Belyaev, I.
name: Bencivenni, G.
name: Ben-Haim, E.
name: Berezhnoy, A.
name: Bernet, R.
name: Berninghoff, D.
name: Bernstein, H. C.
name: Bertella, C.
name: Bertolin, A.
name: Betancourt, C.
name: Betti, F.
name: Bezshyiko, Ia.
name: Bhasin, S.
name: Bhom, J.
name: Bian, L.
name: Bieker, M. S.
name: Bifani, S.
name: Billoir, P.
name: Birch, M.
name: Bishop, F. C. R.
name: Bitadze, A.
name: Bizzeti, A.
name: Bjørn, M.
name: Blago, M. P.
name: Blake, T.
name: Blanc, F.
name: Blusk, S.
name: Bobulska, D.
name: Boelhauve, J. A.
name: Garcia, O. Boente
name: Boettcher, T.
name: Boldyrev, A.
name: Bondar, A.
name: Bondar, N.
name: Borghi, S.
name: Borisyak, M.
name: Borsato, M.
name: Borsuk, J. T.
name: Bouchiba, S. A.
name: Bowcock, T. J. V.
name: Boyer, A.
name: Bozzi, C.
name: Bradley, M. J.
name: Braun, S.
name: Rodriguez, A. Brea
name: Brodski, M.
name: Brodzicka, J.
name: Gonzalo, A. Brossa
name: Brundu, D.
name: Buonaura, A.
name: Burr, C.
name: Bursche, A.
name: Butkevich, A.
name: Butter, J. S.
name: Buytaert, J.
name: Byczynski, W.
name: Cadeddu, S.
name: Cai, H.
name: Calabrese, R.
name: Calefice, L.
name: Diaz, L. Calero
name: Cali, S.
name: Calladine, R.
name: Calvi, M.
name: Gomez, M. Calvo
name: Magalhaes, P. Camargo
name: Camboni, A.
name: Campana, P.
name: Quezada, A. F. Campoverde
name: Capelli, S.
name: Capriotti, L.
name: Carbone, A.
name: Carboni, G.
name: Cardinale, R.
name: Cardini, A.
name: Carli, I.
name: Carniti, P.
name: Carus, L.
name: Akiba, K. Carvalho
name: Vidal, A. Casais
name: Casse, G.
name: Cattaneo, M.
name: Cavallero, G.
name: Celani, S.
name: Cerasoli, J.
name: Chadwick, A. J.
name: Chapman, M. G.
name: Charles, M.
name: Charpentier, Ph.
name: Chatzikonstantinidis, G.
name: Barajas, C. A. Chavez
name: Chefdeville, M.
name: Chen, C.
name: Chen, S.
name: Chernov, A.
name: Chobanova, V.
name: Cholak, S.
name: Chrzaszcz, M.
name: Chubykin, A.
name: Chulikov, V.
name: Ciambrone, P.
name: Cicala, M. F.
name: Vidal, X. Cid
name: Ciezarek, G.
name: Clarke, P. E. L.
name: Clemencic, M.
name: Cliff, H. V.
name: Closier, J.
name: Cobbledick, J. L.
name: Coco, V.
name: Coelho, J. A. B.
name: Cogan, J.
name: Cogneras, E.
name: Cojocariu, L.
name: Collins, P.
name: Colombo, T.
name: Congedo, L.
name: Contu, A.
name: Cooke, N.
name: Coombs, G.
name: Corti, G.
name: Sobral, C. M. Costa
name: Couturier, B.
name: Craik, D. C.
name: Crkovská, J.
name: Torres, M. Cruz
name: Currie, R.
name: Da Silva, C. L.
name: Dall'Occo, E.
name: Dalseno, J.
name: D'Ambrosio, C.
name: Danilina, A.
name: d'Argent, P.
name: Davis, A.
name: Francisco, O. De Aguiar
name: De Bruyn, K.
name: De Capua, S.
name: De Cian, M.
name: De Miranda, J. M.
name: De Paula, L.
name: De Serio, M.
name: De Simone, D.
name: De Simone, P.
name: de Vries, J. A.
name: Dean, C. T.
name: Decamp, D.
name: Del Buono, L.
name: Delaney, B.
name: Dembinski, H. -P.
name: Dendek, A.
name: Denysenko, V.
name: Derkach, D.
name: Deschamps, O.
name: Desse, F.
name: Dettori, F.
name: Dey, B.
name: Di Nezza, P.
name: Didenko, S.
name: Maronas, L. Dieste
name: Dijkstra, H.
name: Dobishuk, V.
name: Donohoe, A. M.
name: Dordei, F.
name: Reis, A. C. dos
name: Douglas, L.
name: Dovbnya, A.
name: Downes, A. G.
name: Dreimanis, K.
name: Dudek, M. W.
name: Dufour, L.
name: Duk, V.
name: Durante, P.
name: Durham, J. M.
name: Dutta, D.
name: Dziurda, A.
name: Dzyuba, A.
name: Easo, S.
name: Egede, U.
name: Egorychev, V.
name: Eidelman, S.
name: Eisenhardt, S.
name: Ek-In, S.
name: Eklund, L.
name: Ely, S.
name: Ene, A.
name: Epple, E.
name: Escher, S.
name: Eschle, J.
name: Esen, S.
name: Evans, T.
name: Falabella, A.
name: Fan, J.
name: Fan, Y.
name: Fang, B.
name: Farry, S.
name: Fazzini, D.
name: Féo, M.
name: Prieto, A. Fernandez
name: Arribas, J. M. Fernandez-tenllado
name: Fernez, A. D.
name: Ferrari, F.
name: Lopes, L. Ferreira
name: Rodrigues, F. Ferreira
name: Sole, S. Ferreres
name: Ferrillo, M.
name: Ferro-Luzzi, M.
name: Filippov, S.
name: Fini, R. A.
name: Fiorini, M.
name: Firlej, M.
name: Fischer, K. M.
name: Fitzgerald, D.
name: Fitzpatrick, C.
name: Fiutowski, T.
name: Fleuret, F.
name: Fontana, M.
name: Fontanelli, F.
name: Forty, R.
name: Lima, V. Franco
name: Sevilla, M. Franco
name: Frank, M.
name: Franzoso, E.
name: Frau, G.
name: Frei, C.
name: Friday, D. A.
name: Fu, J.
name: Fuehring, Q.
name: Funk, W.
name: Gabriel, E.
name: Gaintseva, T.
name: Torreira, A. Gallas
name: Galli, D.
name: Gambetta, S.
name: Gan, Y.
name: Gandelman, M.
name: Gandini, P.
name: Gao, Y.
name: Garau, M.
name: Martin, L. M. Garcia
name: Moreno, P. Garcia
name: Pardiñas, J. García
name: Plana, B. Garcia
name: Rosales, F. A. Garcia
name: Garrido, L.
name: Gaspar, C.
name: Geertsema, R. E.
name: Gerick, D.
name: Gerken, L. L.
name: Gersabeck, E.
name: Gersabeck, M.
name: Gershon, T.
name: Gerstel, D.
name: Ghez, Ph.
name: Gibson, V.
name: Giemza, H. K.
name: Giovannetti, M.
name: Gioventù, A.
name: Gironell, P. Gironella
name: Giubega, L.
name: Giugliano, C.
name: Gizdov, K.
name: Gkougkousis, E. L.
name: Gligorov, V. V.
name: Göbel, C.
name: Golobardes, E.
name: Golubkov, D.
name: Golutvin, A.
name: Gomes, A.
name: Fernandez, S. Gomez
name: Abrantes, F. Goncalves
name: Goncerz, M.
name: Gong, G.
name: Gorbounov, P.
name: Gorelov, I. V.
name: Gotti, C.
name: Govorkova, E.
name: Grabowski, J. P.
name: Grammatico, T.
name: Cardoso, L. A. Granado
name: Graugés, E.
name: Graverini, E.
name: Graziani, G.
name: Grecu, A.
name: Greeven, L. M.
name: Griffith, P.
name: Grillo, L.
name: Gromov, S.
name: Cazon, B. R. Gruberg
name: Gu, C.
name: Guarise, M.
name: Günther, P. A.
name: Gushchin, E.
name: Guth, A.
name: Guz, Y.
name: Gys, T.
name: Hadavizadeh, T.
name: Haefeli, G.
name: Haen, C.
name: Haimberger, J.
name: Halewood-leagas, T.
name: Hamilton, P. M.
name: Hammerich, J. P.
name: Han, Q.
name: Han, X.
name: Hancock, T. H.
name: Hansmann-Menzemer, S.
name: Harnew, N.
name: Harrison, T.
name: Hasse, C.
name: Hatch, M.
name: He, J.
name: Hecker, M.
name: Heijhoff, K.
name: Heinicke, K.
name: Hennequin, A. M.
name: Hennessy, K.
name: Henry, L.
name: Heuel, J.
name: Hicheur, A.
name: Hill, D.
name: Hilton, M.
name: Hollitt, S. E.
name: Hu, J.
name: Hu, J.
name: Hu, W.
name: Huang, W.
name: Huang, X.
name: Hulsbergen, W.
name: Hunter, R. J.
name: Hushchyn, M.
name: Hutchcroft, D.
name: Hynds, D.
name: Ibis, P.
name: Idzik, M.
name: Ilin, D.
name: Ilten, P.
name: Inglessi, A.
name: Ishteev, A.
name: Ivshin, K.
name: Jacobsson, R.
name: Jakobsen, S.
name: Jans, E.
name: Jashal, B. K.
name: Jawahery, A.
name: Jevtic, V.
name: Jezabek, M.
name: Jiang, F.
name: John, M.
name: Johnson, D.
name: Jones, C. R.
name: Jones, T. P.
name: Jost, B.
name: Jurik, N.
name: Kandybei, S.
name: Kang, Y.
name: Karacson, M.
name: Karpov, M.
name: Keizer, F.
name: Kenzie, M.
name: Ketel, T.
name: Khanji, B.
name: Kharisova, A.
name: Kholodenko, S.
name: Kirn, T.
name: Kirsebom, V. S.
name: Kitouni, O.
name: Klaver, S.
name: Klimaszewski, K.
name: Koliiev, S.
name: Kondybayeva, A.
name: Konoplyannikov, A.
name: Kopciewicz, P.
name: Kopecna, R.
name: Koppenburg, P.
name: Korolev, M.
name: Kostiuk, I.
name: Kot, O.
name: Kotriakhova, S.
name: Kravchenko, P.
name: Kravchuk, L.
name: Krawczyk, R. D.
name: Kreps, M.
name: Kress, F.
name: Kretzschmar, S.
name: Krokovny, P.
name: Krupa, W.
name: Krzemien, W.
name: Kucewicz, W.
name: Kucharczyk, M.
name: Kudryavtsev, V.
name: Kuindersma, H. S.
name: Kunde, G. J.
name: Kvaratskheliya, T.
name: Lacarrere, D.
name: Lafferty, G.
name: Lai, A.
name: Lampis, A.
name: Lancierini, D.
name: Lane, J. J.
name: Lane, R.
name: Lanfranchi, G.
name: Langenbruch, C.
name: Langer, J.
name: Lantwin, O.
name: Latham, T.
name: Lazzari, F.
name: Gac, R. Le
name: Lee, S. H.
name: Lefèvre, R.
name: Leflat, A.
name: Legotin, S.
name: Leroy, O.
name: Lesiak, T.
name: Leverington, B.
name: Li, H.
name: Li, L.
name: Li, P.
name: Li, S.
name: Li, Y.
name: Li, Y.
name: Li, Z.
name: Liang, X.
name: Lin, T.
name: Lindner, R.
name: Lisovskyi, V.
name: Litvinov, R.
name: Liu, G.
name: Liu, H.
name: Liu, S.
name: Liu, X.
name: Loi, A.
name: Castro, J. Lomba
name: Longstaff, I.
name: Lopes, J. H.
name: Lovell, G. H.
name: Lu, Y.
name: Lucchesi, D.
name: Luchuk, S.
name: Martinez, M. Lucio
name: Lukashenko, V.
name: Luo, Y.
name: Lupato, A.
name: Luppi, E.
name: Lupton, O.
name: Lusiani, A.
name: Lyu, X.
name: Ma, L.
name: Ma, R.
name: Maccolini, S.
name: Machefert, F.
name: Maciuc, F.
name: Macko, V.
name: Mackowiak, P.
name: Maddrell-Mander, S.
name: Madejczyk, O.
name: Mohan, L. R. Madhan
name: Maev, O.
name: Maevskiy, A.
name: Maisuzenko, D.
name: Majewski, M. W.
name: Malczewski, J. J.
name: Malde, S.
name: Malecki, B.
name: Malinin, A.
name: Maltsev, T.
name: Malygina, H.
name: Manca, G.
name: Mancinelli, G.
name: Manuzzi, D.
name: Marangotto, D.
name: Maratas, J.
name: Marchand, J. F.
name: Marconi, U.
name: Mariani, S.
name: Benito, C. Marin
name: Marinangeli, M.
name: Marks, J.
name: Marshall, A. M.
name: Marshall, P. J.
name: Martellotti, G.
name: Martinazzoli, L.
name: Martinelli, M.
name: Santos, D. Martinez
name: Vidal, F. Martinez
name: Massafferri, A.
name: Materok, M.
name: Matev, R.
name: Mathad, A.
name: Mathe, Z.
name: Matiunin, V.
name: Matteuzzi, C.
name: Mattioli, K. R.
name: Mauri, A.
name: Maurice, E.
name: Mauricio, J.
name: Mazurek, M.
name: McCann, M.
name: Mcconnell, L.
name: Mcgrath, T. H.
name: McNab, A.
name: McNulty, R.
name: Mead, J. V.
name: Meadows, B.
name: Meaux, C.
name: Meier, G.
name: Meinert, N.
name: Melnychuk, D.
name: Meloni, S.
name: Merk, M.
name: Merli, A.
name: Garcia, L. Meyer
name: Mikhasenko, M.
name: Milanes, D. A.
name: Millard, E.
name: Milovanovic, M.
name: Minard, M. -N.
name: Minotti, A.
name: Minzoni, L.
name: Mitchell, S. E.
name: Mitreska, B.
name: Mitzel, D. S.
name: Mödden, A.
name: Mohammed, R. A.
name: Moise, R. D.
name: Mombächer, T.
name: Monroy, I. A.
name: Monteil, S.
name: Morandin, M.
name: Morello, G.
name: Morello, M. J.
name: Moron, J.
name: Morris, A. B.
name: Morris, A. G.
name: Mountain, R.
name: Mu, H.
name: Muheim, F.
name: Mulder, M.
name: Müller, D.
name: Müller, K.
name: Murphy, C. H.
name: Murray, D.
name: Muzzetto, P.
name: Naik, P.
name: Nakada, T.
name: Nandakumar, R.
name: Nanut, T.
name: Nasteva, I.
name: Needham, M.
name: Neri, I.
name: Neri, N.
name: Neubert, S.
name: Neufeld, N.
name: Newcombe, R.
name: Nguyen, T. D.
name: Nguyen-Mau, C.
name: Niel, E. M.
name: Nieswand, S.
name: Nikitin, N.
name: Nolte, N. S.
name: Nunez, C.
name: Oblakowska-Mucha, A.
name: Obraztsov, V.
name: O'Hanlon, D. P.
name: Oldeman, R.
name: Olivares, M. E.
name: Onderwater, C. J. G.
name: Ossowska, A.
name: Goicochea, J. M. Otalora
name: Ovsiannikova, T.
name: Owen, P.
name: Oyanguren, A.
name: Pagare, B.
name: Pais, P. R.
name: Pajero, T.
name: Palano, A.
name: Palutan, M.
name: Pan, Y.
name: Panshin, G.
name: Papanestis, A.
name: Pappagallo, M.
name: Pappalardo, L. L.
name: Pappenheimer, C.
name: Parker, W.
name: Parkes, C.
name: Parkinson, C. J.
name: Passalacqua, B.
name: Passaleva, G.
name: Pastore, A.
name: Patel, M.
name: Patrignani, C.
name: Pawley, C. J.
name: Pearce, A.
name: Pellegrino, A.
name: Altarelli, M. Pepe
name: Perazzini, S.
name: Pereima, D.
name: Perret, P.
name: Petric, M.
name: Petridis, K.
name: Petrolini, A.
name: Petrov, A.
name: Petrucci, S.
name: Petruzzo, M.
name: Pham, T. T. H.
name: Philippov, A.
name: Pica, L.
name: Piccini, M.
name: Pietrzyk, B.
name: Pietrzyk, G.
name: Pili, M.
name: Pinci, D.
name: Pisani, F.
name: K, Resmi P.
name: Placinta, V.
name: Plews, J.
name: Casasus, M. Plo
name: Polci, F.
name: Lener, M. Poli
name: Poliakova, M.
name: Poluektov, A.
name: Polukhina, N.
name: Polyakov, I.
name: Polycarpo, E.
name: Pomery, G. J.
name: Ponce, S.
name: Popov, D.
name: Popov, S.
name: Poslavskii, S.
name: Prasanth, K.
name: Promberger, L.
name: Prouve, C.
name: Pugatch, V.
name: Pullen, H.
name: Punzi, G.
name: Qian, W.
name: Qin, J.
name: Quagliani, R.
name: Quintana, B.
name: Raab, N. V.
name: Trejo, R. I. Rabadan
name: Rachwal, B.
name: Rademacker, J. H.
name: Rama, M.
name: Pernas, M. Ramos
name: Rangel, M. S.
name: Ratnikov, F.
name: Raven, G.
name: Reboud, M.
name: Redi, F.
name: Reiss, F.
name: Alepuz, C. Remon
name: Ren, Z.
name: Renaudin, V.
name: Ribatti, R.
name: Ricciardi, S.
name: Rinnert, K.
name: Robbe, P.
name: Robertson, G.
name: Rodrigues, A. B.
name: Rodrigues, E.
name: Lopez, J. A. Rodriguez
name: Rollings, A.
name: Roloff, P.
name: Romanovskiy, V.
name: Lamas, M. Romero
name: Vidal, A. Romero
name: Roth, J. D.
name: Rotondo, M.
name: Rudolph, M. S.
name: Ruf, T.
name: Vidal, J. Ruiz
name: Ryzhikov, A.
name: Ryzka, J.
name: Silva, J. J. Saborido
name: Sagidova, N.
name: Sahoo, N.
name: Saitta, B.
name: Salomoni, M.
name: Gonzalo, D. Sanchez
name: Gras, C. Sanchez
name: Santacesaria, R.
name: Rios, C. Santamarina
name: Santimaria, M.
name: Santovetti, E.
name: Saranin, D.
name: Sarpis, G.
name: Sarpis, M.
name: Sarti, A.
name: Satriano, C.
name: Satta, A.
name: Saur, M.
name: Savrina, D.
name: Sazak, H.
name: Smead, L. G. Scantlebury
name: Schael, S.
name: Schellenberg, M.
name: Schiller, M.
name: Schindler, H.
name: Schmelling, M.
name: Schmidt, B.
name: Schneider, O.
name: Schopper, A.
name: Schubiger, M.
name: Schulte, S.
name: Schune, M. H.
name: Schwemmer, R.
name: Sciascia, B.
name: Sellam, S.
name: Semennikov, A.
name: Soares, M. Senghi
name: Sergi, A.
name: Serra, N.
name: Sestini, L.
name: Seuthe, A.
name: Seyfert, P.
name: Shang, Y.
name: Shangase, D. M.
name: Shapkin, M.
name: Shchemerov, I.
name: Shchutska, L.
name: Shears, T.
name: Shekhtman, L.
name: Shen, Z.
name: Shevchenko, V.
name: Shields, E. B.
name: Shmanin, E.
name: Shupperd, J. D.
name: Siddi, B. G.
name: Coutinho, R. Silva
name: Simi, G.
name: Simone, S.
name: Skidmore, N.
name: Skwarnicki, T.
name: Slater, M. W.
name: Slazyk, I.
name: Smallwood, J. C.
name: Smeaton, J. G.
name: Smetkina, A.
name: Smith, E.
name: Smith, M.
name: Snoch, A.
name: Soares, M.
name: Lavra, L. Soares
name: Sokoloff, M. D.
name: Soler, F. J. P.
name: Solovev, A.
name: Solovyev, I.
name: De Almeida, F. L. Souza
name: De Paula, B. Souza
name: Spaan, B.
name: Norella, E. Spadaro
name: Spradlin, P.
name: Stagni, F.
name: Stahl, M.
name: Stahl, S.
name: Stefko, P.
name: Steinkamp, O.
name: Stenyakin, O.
name: Stevens, H.
name: Stone, S.
name: Stramaglia, M. E.
name: Straticiuc, M.
name: Strekalina, D.
name: Suljik, F.
name: Sun, J.
name: Sun, L.
name: Sun, Y.
name: Svihra, P.
name: Swallow, P. N.
name: Swientek, K.
name: Szabelski, A.
name: Szumlak, T.
name: Szymanski, M.
name: Taneja, S.
name: Teubert, F.
name: Thomas, E.
name: Thomson, K. A.
name: Tisserand, V.
name: T'Jampens, S.
name: Tobin, M.
name: Tomassetti, L.
name: Machado, D. Torres
name: Tou, D. Y.
name: Tran, M. T.
name: Trifonova, E.
name: Trippl, C.
name: Tuci, G.
name: Tully, A.
name: Tuning, N.
name: Ukleja, A.
name: Unverzagt, D. J.
name: Ursov, E.
name: Usachov, A.
name: Ustyuzhanin, A.
name: Uwer, U.
name: Vagner, A.
name: Vagnoni, V.
name: Valassi, A.
name: Valenti, G.
name: Canudas, N. Valls
name: van Beuzekom, M.
name: Van Dijk, M.
name: van Herwijnen, E.
name: Van Hulse, C. B.
name: van Veghel, M.
name: Gomez, R. Vazquez
name: Regueiro, P. Vazquez
name: Sierra, C. Vázquez
name: Vecchi, S.
name: Velthuis, J. J.
name: Veltri, M.
name: Venkateswaran, A.
name: Veronesi, M.
name: Vesterinen, M.
name: Vieira, D.
name: Diaz, M. Vieites
name: Viemann, H.
name: Vilasis-Cardona, X.
name: Figueras, E. Vilella
name: Vincent, P.
name: Bruch, D. Vom
name: Vorobyev, A.
name: Vorobyev, V.
name: Voropaev, N.
name: Waldi, R.
name: Walsh, J.
name: Wang, C.
name: Wang, J.
name: Wang, J.
name: Wang, J.
name: Wang, J.
name: Wang, M.
name: Wang, R.
name: Wang, Y.
name: Wang, Z.
name: Wang, Z.
name: Wark, H. M.
name: Watson, N. K.
name: Weber, S. G.
name: Websdale, D.
name: Weisser, C.
name: Westhenry, B. D. C.
name: White, D. J.
name: Whitehead, M.
name: Wiedner, D.
name: Wilkinson, G.
name: Wilkinson, M.
name: Williams, I.
name: Williams, M.
name: Williams, M. R. J.
name: Wilson, F. F.
name: Wislicki, W.
name: Witek, M.
name: Witola, L.
name: Wormser, G.
name: Wotton, S. A.
name: Wu, H.
name: Wyllie, K.
name: Xiang, Z.
name: Xiao, D.
name: Xie, Y.
name: Xu, A.
name: Xu, J.
name: Xu, L.
name: Xu, M.
name: Xu, Q.
name: Xu, Z.
name: Xu, Z.
name: Yang, D.
name: Yang, S.
name: Yang, Y.
name: Yang, Z.
name: Yang, Z.
name: Yao, Y.
name: Yeomans, L. E.
name: Yin, H.
name: Yu, J.
name: Yuan, X.
name: Yushchenko, O.
name: Zaffaroni, E.
name: Zavertyaev, M.
name: Zdybal, M.
name: Zenaiev, O.
name: Zeng, M.
name: Zhang, D.
name: Zhang, L.
name: Zhang, S.
name: Zhang, Y.
name: Zhang, Y.
name: Zhelezov, A.
name: Zheng, Y.
name: Zhou, X.
name: Zhou, Y.
name: Zhu, X.
name: Zhu, Z.
name: Zhukov, V.
name: Zonneveld, J. B.
name: Zou, Q.
name: Zucchelli, S.
name: Zuliani, D.
name: Zunica, G.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: The Standard Model of particle physics currently provides our best description of fundamental particles and their interactions. The theory predicts that the different charged leptons, the electron, muon and tau, have identical electroweak interaction strengths. Previous measurements have shown a wide range of particle decays are consistent with this principle of lepton universality. This article presents evidence for the breaking of lepton universality in beauty-quark decays, with a significance of 3.1 standard deviations, based on proton-proton collision data collected with the LHCb detector at CERN's Large Hadron Collider. The measurements are of processes in which a beauty meson transforms into a strange meson with the emission of either an electron and a positron, or a muon and an antimuon. If confirmed by future measurements, this violation of lepton universality would imply physics beyond the Standard Model, such as a new fundamental interaction between quarks and leptons.
description: All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2021-004.html (LHCb public pages)