Aaij, R.Beteta, C. AbellanAckernley, T.Adeva, B.Adinol, M.Afsharnia, H.Aidala, C. A.Aiola, S.Ajaltouni, Z.Akar, S.Albicocco, P.Albrecht, J.Alessio, F.Alexander, M.Alfonso Albero, A.Alkhazov, G.Cartelle, P. AlvarezAlves Jr, A. A.Amato, S.Amhis, Y.An, L.Anderlini, L.Andreassi, G.Andreotti, M.Archilli, F.Romeu, J. ArnauArtamonov, A.Artuso, M.Arzymatov, K.Aslanides, E.Atzeni, M.Audurier, B.Bachmann, S.Back, J. J.Baker, S.Balagura, VBaldini, W.Baranov, A.Barlow, R. J.Barsuk, S.Barter, W.Bartolini, M.Baryshnikov, F.Bassi, G.Batozskaya, VBatsukh, B.Battig, A.Bay, A.Becker, M.Bedeschi, F.Bediaga, IBeiter, A.Bel, L. J.Belavin, VBelin, S.Beliy, N.Bellee, VBelous, K.Belyaev, IBencivenni, G.Ben-Haim, E.Benson, S.Beranek, S.Berezhnoy, A.Bernet, R.Berningho, D.Bernstein, H. C.Bertella, C.Bertholet, E.Bertolin, A.Betancourt, C.Betti, F.Bettler, M. O.Bezshyiko, IaBhasin, S.Bhom, J.Bieker, M. S.Bifani, S.Billoir, P.Bizzeti, A.Bjorn, M.Blago, M. P.Blake, T.Blanc, F.Blusk, S.Bobulska, D.Bocci, VBoente Garcia, O.Boettcher, T.Boldyrev, A.Bondar, A.Bondar, N.Borghi, S.Borisyak, M.Borsato, M.Borsuk, J. T.Bowcock, T. J., VBozzi, C.Bradley, M. J.Braun, S.Rodriguez, A. BreaBrodski, M.Brodzicka, J.Gonzalo, A. BrossaBrundu, D.Buchanan, E.Buechler-Germann, A.Buonaura, A.Burr, C.Bursche, A.Butter, J. S.Buytaert, J.Byczynski, W.Cadeddu, S.Cai, H.Calabrese, R.Diaz, L. CaleroCali, S.Calladine, R.Calvi, M.Calvo Gomez, M.Magalhaes, P. CamargoCamboni, A.Campana, P.Perez, D. H. CamporaCapriotti, L.Carbone, A.Carboni, G.Cardinale, R.Cardini, A.Carniti, P.Akiba, K. CarvalhoCasais Vidal, A.Casse, G.Cattaneo, M.Cavallero, G.Celani, S.Cenci, R.Cerasoli, J.Chapman, M. G.Charles, M.Charpentier, PhChatzikonstantinidis, G.Chefdeville, M.Chekalina, VChen, C.Chen, S.Chernov, A.Chitic, S-GChobanova, VChrzaszcz, M.Chubykin, A.Ciambrone, P.Cicala, M. F.Cid Vidal, X.Ciezarek, G.Cindolo, F.Clarke, P. E. L.Clemencic, M.Cli, H., VClosier, J.Cobbledick, J. L.Coco, VCoelho, J. A. B.Cogan, J.Cogneras, E.Cojocariu, L.Collins, P.Colombo, T.Comerma-Montells, A.Contu, A.Cooke, N.Coombs, G.Coquereau, S.Corti, G.Sobral, C. M. CostaCouturier, B.Craik, D. C.Crkovska, J.Crocombe, A.Cruz Torres, M.Currie, R.Da Silva, C. L.Dall'Occo, E.Dalseno, J.D'Ambrosio, C.Danilina, A.d'Argent, P.Davis, A.Francisco, O. De AguiarDe Bruyn, K.De Capua, S.De Cian, M.De Miranda, J. M.De Paula, L.De Serio, M.De Simone, P.de Vries, J. A.Dean, C. T.Dean, W.Decamp, D.Del Buono, L.Delaney, B.Dembinski, H-PDemmer, M.Dendek, A.Denysenko, VDerkach, D.Deschamps, O.Desse, F.Dettori, F.Dey, B.Di Canto, A.Di Nezza, P.Didenko, S.Dijkstra, H.Dobishuk, VDordei, F.Dorigo, M.dos Reis, A. C.Douglas, L.Dovbnya, A.Dreimanis, K.Dudek, M. W.Dufour, L.Dujany, G.Durante, P.Durham, J. M.Dutta, D.Dziewiecki, M.Dziurda, A.Dzyuba, A.Easo, S.Egede, U.Egorychev, VEidelman, S.Eisenhardt, S.Ekelhof, R.Ek-In, S.Eklund, L.Ely, S.Ene, A.Epple, E.Escher, S.Esen, S.Evans, T.Falabella, A.Fan, J.Farley, N.Farry, S.Fazzini, D.Fedin, P.Feo, M.Declara, P. FernandezFernandez Prieto, A.Ferrari, F.Lopes, L. FerreiraRodrigues, F. FerreiraSole, S. FerreresFerrillo, M.Ferro-Luzzi, M.Filippov, S.Fini, R. A.Fiorini, M.Firlej, M.Fischer, K. M.Fitzpatrick, C.Fiutowski, T.Fleuret, F.Fontana, M.Fontanelli, F.Forty, R.Lima, V. FrancoSevilla, M. FrancoFrank, M.Frei, C.Friday, D. A.Fu, J.Fuehring, Q.Funk, W.Gabriel, E.Gallas Torreira, A.Galli, D.Gallorini, S.Gambetta, S.Gan, Y.Gandelman, M.Gandini, P.Gao, Y.Garcia Martin, L. M.Pardinas, J. GarciaGarcia Plana, B.Rosales, F. A. GarciaTico, J. GarraGarrido, L.Gascon, D.Gaspar, C.Gerick, D.Gersabeck, E.Gersabeck, M.Gershon, T.Gerstel, D.Ghez, PhGibson, VGioventu, A.Girard, O. G.Gironella Gironell, P.Giubega, L.Giugliano, C.Gizdov, K.Gligorov, V. V.Gobel, C.Golobardes, E.Golubkov, D.Golutvin, A.Gomes, A.Gorbounov, P.Gorelov, I., VGotti, C.Govorkova, E.Grabowski, J. P.Diaz, R. GracianiGrammatico, T.Cardoso, L. A. GranadoGrauges, E.Graverini, E.Graziani, G.Grecu, A.Greim, R.Grith, P.Grillo, L.Gruber, L.Cazon, B. R. GrubergGu, C.Gushchin, E.Guth, A.Guz, YuGys, T.Guenther, P. A.Hadavizadeh, T.Haefeli, G.Haen, C.Haines, S. C.Hamilton, P. M.Han, Q.Han, X.Hancock, T. H.Hansmann-Menzemer, S.Harnew, N.Harrison, T.Hart, R.Hasse, C.Hatch, M.He, J.Hecker, M.Heijho, K.Heinicke, K.Heister, A.Hennequin, A. M.Hennessy, K.Henry, L.Heuel, J.Hicheur, A.Hill, D.Hilton, M.Hopchev, P. H.Hu, J.Hu, W.Huang, W.Hulsbergen, W.Humair, T.Hunter, R. J.Hushchyn, M.Hutchcroft, D.Hynds, D.Ibis, P.Idzik, M.Ilten, P.Inglessi, A.Inyakin, A.Ivshin, K.Jacobsson, R.Jakobsen, S.Jans, E.Jashal, B. K.Jawahery, A.Jevtic, VJiang, F.John, M.Johnson, D.Jones, C. R.Jost, B.Jurik, N.Kandybei, S.Karacson, M.Kariuki, J. M.Kazeev, N.Kecke, M.Keizer, F.Kelsey, M.Kenzie, M.Ketel, T.Khanji, B.Kharisova, A.Kim, K. E.Kirn, T.Kirsebom, V. S.Klaver, S.Klimaszewski, K.Koliiev, S.Kondybayeva, A.Konoplyannikov, A.Kopciewicz, P.Kopecna, R.Koppenburg, P.Korolev, M.Kostiuk, IKot, O.Kotriakhova, S.Kravchuk, L.Krawczyk, R. D.Kreps, M.Kress, F.Kretzschmar, S.Krokovny, P.Krupa, W.Krzemien, W.Kucewicz, W.Kucharczyk, M.Kudryavtsev, VKuindersma, H. S.Kunde, G. J.Kvaratskheliya, T.Lacarrere, D.La Erty, G.Lai, A.Lancierini, D.Lane, J. J.Lanfranchi, G.Langenbruch, C.Lantwin, O.Latham, T.Lazzari, F.Lazzeroni, C.Le Gac, R.Lefevre, R.Le At, A.Leroy, O.Lesiak, T.Leverington, B.Li, H.Li, X.Li, Y.Li, Z.Liang, X.Lindner, R.Lisovskyi, VLiu, G.Liu, X.Loh, D.Loi, A.Lomba Castro, J.Longsta, ILopes, J. H.Loustau, G.Lovell, G. H.Lu, Y.Lucchesi, D.Martinez, M. LucioLuo, Y.Lupato, A.Luppi, E.Lupton, O.Lusiani, A.Lyu, X.Maccolini, S.Machefert, F.Maciuc, F.Macko, VMackowiak, P.Maddrell-Mander, S.Mohan, L. R. MadhanMaev, O.Maevskiy, A.Maisuzenko, D.Majewski, M. W.Malde, S.Malecki, B.Malinin, A.Maltsev, T.Malygina, H.Manca, G.Mancinelli, G.Manera Escalero, R.Manuzzi, D.Marangotto, D.Maratas, J.Marchand, J. F.Marconi, U.Mariani, S.Benito, C. MarinMarinangeli, M.Marino, P.Marks, J.Marshall, P. J.Martellotti, G.Martinazzoli, L.Martinelli, M.Martinez Santos, D.Martinez Vidal, F.Erri, A. MassaMaterok, M.Matev, R.Mathad, A.Mathe, Z.Matiunin, VMatteuzzi, C.Mattioli, K. R.Mauri, A.Maurice, E.McCann, M.Mcconnell, L.McNab, A.McNulty, R.Mead, J., VMeadows, B.Meaux, C.Meier, G.Meinert, N.Melnychuk, D.Meloni, S.Merk, M.Merli, A.Mikhasenko, M.Milanes, D. A.Millard, E.Minard, M-NMineev, O.Minzoni, L.Mitchell, S. E.Mitreska, B.Mitzel, D. S.Moedden, A.Mogini, A.Moise, R. D.Mombaecher, T.Monroy, I. A.Monteil, S.Morandin, M.Morello, G.Morello, M. J.Moron, J.Morris, A. B.Morris, A. G.Mountain, R.Mu, H.Muheim, F.Mukherjee, M.Mulder, M.Mueller, D.Mueller, K.Mueller, VMurphy, C. H.Murray, D.Muzzetto, P.Naik, P.Nakada, T.Nandakumar, R.Nandi, A.Nanut, T.Nasteva, INeedham, M.Neri, N.Neubert, S.Neufeld, N.Newcombe, R.Nguyen, T. D.Nguyen-Mau, C.Niel, E. M.Nieswand, S.Nikitin, N.Nolte, N. S.Nunez, C.Oblakowska-Mucha, A.Obraztsov, VOgilvy, S.O'Hanlon, D. P.Oldeman, R.Onderwater, C. J. G.Osborn, J. D.Ossowska, A.Otalora Goicochea, J. M.Ovsiannikova, T.Owen, P.Oyanguren, A.Pais, P. R.Pajero, T.Palano, A.Palutan, M.Panshin, G.Papanestis, A.Pappagallo, M.Pappalardo, L. L.Pappenheimer, C.Parker, W.Parkes, C.Passaleva, G.Pastore, A.Patel, M.Patrignani, C.Pearce, A.Pellegrino, A.Altarelli, M. PepePerazzini, S.Pereima, D.Perret, P.Pescatore, L.Petridis, K.Petrolini, A.Petrov, A.Petrucci, S.Petruzzo, M.Pietrzyk, B.Pietrzyk, G.Pili, M.Pinci, D.Pinzino, J.Pisani, F.Piucci, A.Placinta, VPlayfer, S.Plews, J.Plo Casasus, M.Polci, F.Lener, M. PoliPoliakova, M.Poluektov, A.Polukhina, N.Polyakov, IPolycarpo, E.Pomery, G. J.Ponce, S.Popov, A.Popov, D.Poslavskii, S.Prasanth, K.Promberger, L.Prouve, C.Pugatch, VNavarro, A. PuigPullen, H.Punzi, G.Qian, W.Qin, J.Quagliani, R.Quintana, B.Raab, N., VTrejo, R. I. RabadanRachwal, B.Rademacker, J. H.Rama, M.Ramos Pernas, M.Rangel, M. S.Ratnikov, F.Raven, G.Reboud, M.Redi, F.Reiss, F.Remon Alepuz, C.Ren, Z.Renaudin, VRicciardi, S.Richards, S.Rinnert, K.Robbe, P.Robert, A.Rodrigues, A. B.Rodrigues, E.Lopez, J. A. RodriguezRoehrken, M.Roiser, S.Rollings, A.Romanovskiy, VRomero Lamas, M.Romero Vidal, A.Roth, J. D.Rotondo, M.Rudolph, M. S.Ruf, T.Ruiz Vidal, J.Ryzka, J.Saborido Silva, J. J.Sagidova, N.Saitta, B.Gras, C. SanchezSanchez Mayordomo, C.Santacesaria, R.Santamarina Rios, C.Santimaria, M.Santovetti, E.Sarpis, G.Sarti, A.Satriano, C.Satta, A.Saur, M.Savrina, D.Smead, L. G. ScantleburySchael, S.Schellenberg, M.Schiller, M.Schindler, H.Schmelling, M.Schmelzer, T.Schmidt, B.Schneider, O.Schopper, A.Schreiner, H. F.Schubiger, M.Schulte, S.Schune, M. H.Schwemmer, R.Sciascia, B.Sciubba, A.Sellam, S.Semennikov, A.Sergi, A.Serra, N.Serrano, J.Sestini, L.Seuthe, A.Seyfert, P.Shangase, D. M.Shapkin, M.Shchutska, L.Shears, T.Shekhtman, L.Shevchenko, VShmanin, E.Shupperd, J. D.Siddi, B. G.Coutinho, R. SilvaSilva de Oliveira, L.Simi, G.Simone, S.Skiba, ISkidmore, N.Skwarnicki, T.Slater, M. W.Smeaton, J. G.Smetkina, A.Smith, E.Smith, I. T.Smith, M.Snoch, A.Soares, M.Soares Lavra, L.Sokolo, M. D.Soler, F. J. P.Souza De Paula, B.Spaan, B.Norella, E. SpadaroSpradlin, P.Stagni, F.Stahl, M.Stahl, S.Stefko, P.Steinkamp, O.Stemmle, S.Stenyakin, O.Stepanova, M.Stevens, H.Stone, S.Stracka, S.Stramaglia, M. E.Straticiuc, M.Strokov, S.Sun, J.Sun, L.Sun, Y.Svihra, P.Swientek, K.Szabelski, A.Szumlak, T.Szymanski, M.Taneja, S.Tang, Z.Tekampe, T.Tellarini, G.Teubert, F.Thomas, E.Thomson, K. A.Tilley, M. J.Tisserand, VT'Jampens, S.Tobin, M.Tolk, S.Tomassetti, L.Tonelli, D.Torres Machado, D.Tou, D. Y.Er, E. TourneTraill, M.Tran, M. T.Trippl, C.Trisovic, A.Tsaregorodtsev, A.Tuci, G.Tully, A.Tuning, N.Ukleja, A.Usachov, A.Ustyuzhanin, A.Uwer, U.Vagner, A.Vagnoni, V.Valassi, A.Valenti, G.van Beuzekom, M.Van Hecke, H.van Herwijnen, E.Van Hulse, C. B.van Veghel, M.Vazquez Gomez, R.Vazquez Regueiro, P.Sierra, C. VazquezVecchi, S.Velthuis, J. J.Veltri, M.Venkateswaran, A.Vernet, M.Veronesi, M.Vesterinen, M.Barbosa, J. V. VianaVieira, D.Diaz, M. VieitesViemann, H.Vilasis-Cardona, X.Vitkovskiy, A.Vollhardt, A.Vom Bruch, D.Vorobyev, A.Vorobyev, V.Voropaev, N.Waldi, R.Walsh, J.Wang, J.Wang, M.Wang, Y.Wang, Z.Ward, D. R.Wark, H. M.Watson, N. K.Websdale, D.Weiden, A.Weisser, C.Westhenry, B. D. C.White, D. J.Whitehead, M.Wiedner, D.Wilkinson, G.Wilkinson, M.Williams, IWilliams, M.Williams, M. R. J.Williams, T.Wilson, F. F.Wislicki, W.Witek, M.Witola, L.Wormser, G.Wotton, S. A.Wu, H.Wyllie, K.Xiang, Z.Xiao, D.Xie, Y.Xing, H.Xu, A.Xu, L.Xu, M.Xu, Q.Xu, Z.Yang, Z.Yao, Y.Yeomans, L. E.Yin, H.Yu, J.Yuan, X.Yushchenko, O.Zarebski, K. A.Zavertyaev, M.Zdybal, M.Zeng, M.Zhang, D.Zhang, L.Zhang, S.Zhang, W. C.Zhang, Y.Zhelezov, A.Zheng, Y.Zhou, X.Zhou, Y.Zhu, X.Zhukov, VZonneveld, J. B.Zucchelli, S.2020-06-142020-06-142020-06-142020-05-1110.1007/JHEP05(2020)040https://infoscience.epfl.ch/handle/20.500.14299/169285WOS:000534629900001The ratio of branching fractions of the decays -> pK(-)mu(+)mu(-),RpK-1}, is measured for the first time using proton-proton collision data corresponding to an integrated luminosity of 4.7 fb(-1) recorded with the LHCb experiment at center-of-mass energies of 7, 8 and 13 TeV. In the dilepton mass-squared range 0.1 < q(2)< 6.0 GeV2/c(4) and the pK(-) mass range m(pK(-)) < 2600 MeV/c(2), the ratio of branching fractions is measured to be RpK-1=1.17-0.16+0.18 +/- 0.0$$ {R}_{pK}<^>{-1}={1.17}_{-0.16}<^>{+0.18}\pm 0.07 $$\end{document}, where the first uncertainty is statistical and the second systematic. This is the first test of lepton universality with b baryons and the first observation of the decay -> pK(-)e(+)e(-).Physics, Particles & FieldsPhysicsb physicsbranching fractionflavour changing neutral currentshadronhadron scattering (experiments)rare decaydecaytext::journal::journal article::research article