Measurement of lepton universality parameters in B+ →k+ℓ+ℓ- and B0 →k∗0ℓ+ℓ- decays

Aaij, R; Abdelmotteleb, Asw; Beteta, Ca; Abudinen, F; Ackernley, T; Adeva, B; Adinolfi, M; Adlarson, P; Afsharnia, H; Agapopoulou, C; Aidala, Ca; Ajaltouni, Z; Akar, S; Akiba, K; Albicocco, P; Albrecht, J; Alessio, F; Alexander, M; Albero, Aa; Aliouche, Z; Cartelle, Pa; Amalric, R; Amato, S; Amey, Jl; 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; Perea, Ibb; Bachmann, S; Bachmayer, M; Back, Jj; Bailly-Reyre, A; Rodriguez, Pb; Balagura, V; Baldini, W; Leite, Jbd; Barbetti, M; Barlow, Rj; Barsuk, S; Barter, W; Bartolini, M; Baryshnikov, F; Basels, Jm; Bassi, G; Batsukh, B; Battig, A; Bay, A; Beck, A; Becker, M; Bedeschi, F; Bediaga, Ib; Beiter, A; Belavin, V; Belin, S; Bellee, V; Belous, K; Belov, I; Belyaev, I; Benane, G; Bencivenni, G; Ben-Haim, E; Berezhnoy, A; Bernet, R; Andres, Sb; Berninghoff, D; Bernstein, Hc; Bertella, C; Bertolin, A; Betancourt, C; Betti, F; Bezshyiko, I; Bhasin, S; Bhom, J; Bian, L; Bieker, Ms; Biesuz, Nv; Billoir, P; Biolchini, A; Birch, M; Bishop, Fcr; Bitadze, A; Bizzeti, A; Blago, Mp; Blake, T; Blanc, F; Blank, Je; Blusk, S; Bobulska, D; Boelhauve, Ja; Garcia, Ob; Boettcher, T; Boldyrev, A; Bolognani, Cs; Bolzonella, R; Bondar, N; Borgato, F; Borghi, S; Borsato, M; Borsuk, Jt; Bouchiba, Sa; Bowcock, Tjv; Boyer, A; Bozzi, C; Bradley, Mj; Braun, S; Rodriguez, Ab; Brodzicka, J; Gonzalo, Ab; Brown, J; Brundu, D; Buonaura, A; Buonincontri, L; Burke, At; Burr, C; Bursche, A; Butkevich, A; Butter, Js; Buytaert, J; Byczynski, W; Cadeddu, S; Cai, H; Calabrese, R; Calefice, L; Cali, S; Calvi, M; Gomez, Mc; Campana, P; Perez, Dhc; Quezada, Afc; Capelli, S; Capriotti, L; Carbone, A; Cardinale, R; Cardini, A; Carniti, P; Carus, L; Vidal, Ac; Caspary, R; Casse, G; Cattaneo, M; Cavallero, G; Cavallini, V; Celani, S; Cerasoli, J; Cervenkov, D; Chadwick, Aj; Chahrour, I; Chapman, Mg; Charles, M; Charpentier, P; Barajas, Cac; Chefdeville, M; Chen, C; Chen, S; Chernov, A; Chernyshenko, S; Chobanova, V; Cholak, S; Chrzaszcz, M; Chubykin, A; Chulikov, V; Ciambrone, P; Cicala, Mf; Vidal, Xc; Ciezarek, G; Cifra, P; Ciullo, G; Clarke, Pel; Clemencic, M; Cliff, Hv; Closier, J; Cobbledick, Jl; Coco, V; Coelho, Jab; Cogan, J; Cogneras, E; Cojocariu, L; Collins, P; Colombo, T; Congedo, L; Contu, A; Cooke, N; Corredoira, I; Corti, G; Couturier, B; Craik, Dc; Torres, Mc; Currie, R; Da Silva, Cl; Dadabaev, S; Dai, L; Dai, X; Dall'Occo, E; Dalseno, J; D'Ambrosio, C; Daniel, J; Danilina, A; D'Argent, P; Davies, Je; Davis, A; Francisco, Od; de Boer, J; De Bruyn, K; De Capua, S; De Cian, M; Da Graca, Udfc; De Lucia, E; De Miranda, Jm; De Paula, L; De Serio, M; De Simone, D; De Simone, P; De Vellis, F; de Vries, Ja; Dean, Ct; Debernardis, F; Decamp, D; Dedu, V; Del Buono, L; Delaney, B; Dembinski, Hp; Denysenko, V; Deschamps, O; Dettori, F; Dey, B; Di Nezza, P; Diachkov, I; Didenko, S; Maronas, Ld; Ding, S; Dobishuk, V; Dolmatov, A; Dong, C; Donohoe, Am; Dordei, F; dos Reis, Ac; Douglas, L; Downes, Ag; Duda, P; Dudek, Mw; Dufour, L; Duk, V; Durante, P; Duras, Mm; Durham, Jm; Dutta, D; Dziurda, A; Dzyuba, A; Easo, S; Egede, U; Egorychev, V; Orro, Ce; Eisenhardt, S; Ejopu, E; Ek-In, S; Eklund, L; Ellbracht, J; Ely, S; Ene, A; Epple, E; Escher, S; Eschle, J; Esen, S; Evans, T; Fabiano, F; Falcao, Ln; Fan, Y; Fang, B; Fantini, L; Faria, M; Farry, S; Fazzini, D; Felkowski, Lf; Feo, M; Gomez, Mf; Fernez, Ad; Ferrari, F; Lopes, Lf; Rodrigues, Ff; Sole, Sf; Ferrillo, M; Ferro-Luzzi, M; Filippov, S; Fini, Ra; Fiorini, M; Firlej, M; Fischer, Km; Fitzgerald, Ds; Fitzpatrick, C; Fiutowski, T; Fleuret, F; Fontana, M; Fontanelli, F; Forty, R; Foulds-Holt, D; Lima, Vf; Sevilla, Mf; Frank, M; Franzoso, E; Frau, G; Frei, C; Friday, Da; Fu, J; Fuehring, Q; Fulghesu, T; Gabriel, E; Galati, G; Galati, Md; Torreira, Ag; Galli, D; Gambetta, S; Gan, Y; Gandelman, M; Gandini, P; Gao, Y; Gao, Y; Garau, M; Martin, Lmg; Moreno, Pg; Pardiñas, Jg; Plana, Bg; Rosales, Fag; Garrido, L; Gaspar, C; Geertsema, Re; Gerick, D; Gerken, Ll; Gersabeck, E; Gersabeck, M; Gershon, T; Giambastiani, L; Gibson, V; Giemza, Hk; Gilman, Al; Giovannetti, M; Gioventù, A; Gironell, Pg; Giugliano, C; Giza, Ma; Gizdov, K; Gkougkousis, El; Gligorov, Vv; Göbel, C; Golobardes, E; Golubkov, D; Golutvin, A; Gomes, A; Fernandez, Sg; Abrantes, Fg; Goncerz, M; Gong, G; Gorelov, Iv; Gotti, C; Grabowski, Jp; Grammatico, T; Cardoso, Lag; Graugés, E; Graverini, E; Graziani, G; Grecu, At; Greeven, Lm; Grieser, Na; Grillo, L; Gromov, S; Cazon, Brg; Gu, C; Guarise, M; Guittiere, M; Günther, Pa; Gushchin, E; Guth, A; Guz, Y; Gys, T; Hadavizadeh, T; Hadjivasiliou, C; Haefeli, G; Haen, C; Haimberger, J; Haines, Sc; Halewood-Leagas, T; Halvorsen, Mm; Hamilton, Pm; Hammerich, J; Han, Q; Han, X; Hansen, Eb; Hansmann-Menzemer, S; Hao, L; Harnew, N; Harrison, T; Hasse, C; Hatch, M; He, J; Heijhoff, K; Hemmer, Fh; Henderson, C; Henderson, Rdl; Hennequin, Am; Hennessy, K; Henry, L; Herd, J; Heuel, J; Hicheur, A; Hill, D; Hilton, M; Hollitt, Se; Horswill, J; Hou, R; Hou, Y; Hu, J; Hu, J; Hu, W; Hu, X; Huang, W; Huang, X; Hulsbergen, W; Hunter, Rj; Hushchyn, M; Hutchcroft, D; Ibis, P; Idzik, M; Ilin, D; Ilten, P; Inglessi, A; Iniukhin, A; Ishteev, A; Ivshin, K; Jacobsson, R; Jage, H; Elles, Jj; Jakobsen, S; Jans, E; Jashal, Bk; Jawahery, A; Jevtic, V; Jiang, E; Jiang, X; Jiang, Y; John, M; Johnson, D; Jones, Cr; Jones, Tp; Jost, B; Jurik, N; Juszczak, I; Kandybei, S; Kang, Y; Karacson, M; Karpenkov, D; Karpov, M; Kautz, Jw; Keizer, F; Keller, Dm; Kenzie, M; Ketel, T; Khanji, B; Kharisova, A; Kholodenko, S; Khreich, G; Kirn, T; Kirsebom, Vs; Kitouni, O; Klaver, S; Kleijne, N; Klimaszewski, K; Kmiec, Mr; 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, Rd; Kreps, M; Kretzschmar, S; Krokovny, P; Krupa, W; Krzemien, W; Kubat, J; Kubis, S; Kucewicz, W; Kucharczyk, M; Kudryavtsev, V; Kulikova, Ek; Kupsc, A; Lacarrere, D; Lafferty, G; Lai, A; Lampis, A; Lancierini, D; Gomez, Cl; Lane, Jj; Lane, R; Langenbruch, C; Langer, J; Lantwin, O; Latham, T; Lazzari, F; Lazzaroni, M; Le Gac, R; Lee, Sh; Lefevre, R; Leflat, A; Legotin, S; Lenisa, P; Leroy, O; Lesiak, T; Leverington, B; Li, A; Li, H; Li, K; Li, P; Pr, 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, Q; Liu, S; Salvia, Al; Loi, A; Lollini, R; Castro, Jl; Longstaff, I; Lopes, Jh; Huertas, Al; Soliño, Sl; Lovell, Gh; Lu, Y; Lucarelli, C; Lucchesi, D; Luchuk, S; Martinez, Ml; Lukashenko, V; Luo, Y; Lupato, A; Luppi, E; Lusiani, A; Lynch, K; Lyu, Xr; Ma, R; Maccolini, S; Machefert, F; Maciuc, F; Mackay, I; Macko, V; Mohan, Lrm; Maevskiy, A; Maisuzenko, D; Majewski, Mw; Malczewski, Jj; Malde, S; Malecki, B; Malinin, A; Maltsev, T; Manca, G; Mancinelli, G; Mancuso, C; Escalero, Rm; Manuzzi, D; Manzari, Ca; Marangotto, D; Marchand, Jf; Marconi, U; Mariani, S; Benito, Cm; Marks, J; Marshall, Am; Marshall, Pj; Martelli, G; Martellotti, G; Martinazzoli, L; Martinelli, M; Santos, Dm; Vidal, Fm; Massafferri, A; Materok, M; Matev, R; Mathad, A; Matiunin, V; Matteuzzi, C; Mattioli, Kr; Mauri, A; Maurice, E; Mauricio, J; Mazurek, M; Mccann, M; Mcconnell, L; Mcgrath, Th; Mchugh, Nt; Mcnab, A; Mcnulty, R; Mead, Jv; Meadows, B; Meier, G; Melnychuk, D; Meloni, S; Merk, M; Merli, A; Garcia, Lm; Miao, D; Mikhasenko, M; Milanes, Da; Millard, E; Milovanovic, M; Minard, Mn; Minotti, A; Miralles, T; Mitchell, Se; Mitreska, B; Mitzel, Ds; Modden, A; Mohammed, Ra; Moise, Rd; Mokhnenko, S; Mombächer, T; Monk, M; Monroy, Ia; Monteil, S; Morello, G; Morello, Mj; Moron, J; Morris, Ab; Morris, Ag; Mountain, R; Mu, H; Muhammad, E; Muheim, F; Mulder, M; Müller, K; Murphy, Ch; 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, Em; Nieswand, S; Nikitin, N; Nolte, Ns; Normand, C; Fernandez, Jn; Nowak, Gn; Nunez, C; Oblakowska-Mucha, A; Obraztsov, V; Oeser, T; O'Hanlon, Dp; Okamura, S; Oldeman, R; Oliva, F; Onderwater, Cjg; O'Neil, Rh; Goicochea, Mo; Ovsiannikova, T; Owen, P; Oyanguren, A; Ozcelik, O; Padeken, Ko; Pagare, B; Pais, Pr; Pajero, T; Palano, A; Palutan, M; Pan, Y; Panshin, G; Paolucci, L; Papanestis, A; Pappagallo, M; Pappalardo, Ll; Parker, W; Parkes, C; Passalacqua, B; Passaleva, G; Pastore, A; Patel, M; Patrignani, C; Pawley, Cj; Pellegrino, A; Altarelli, Mp; Perazzini, S; Pereima, D; Castro, Ap; Perret, P; Petridis, K; Petrolini, A; Petrov, 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; Casasus, Mp; Polci, F; Lener, Mp; 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; Hr, Qi; Qian, W; Qin, N; Qu, S; Quagliani, R; Raab, Nv; Rachwal, B; Rademacker, Jh; Rajagopalan, R; Rama, M; Pernas, Mr; Rangel, Ms; Ratnikov, F; Raven, G; De Miguel, Mr; Redi, F; Reich, J; Reiss, F; Alepuz, Cr; Ren, Z; Resmi, Pk; Ribatti, R; Ricci, Am; Ricciardi, S; Richardson, K; Richardson-Slipper, M; Rinnert, K; Robbe, P; Robertson, G; Rodrigues, Ab; Rodrigues, E; Fernandez, Er; Lopez, Jar; Rodriguez, Er; Rolf, Dl; Rollings, A; Roloff, P; Romanovskiy, V; Lamas, Mr; Vidal, Ar; Roth, Jd; Rotondo, M; Rudolph, Ms; Ruf, T; Fernandez, Rar; Vidal, Jr; Ryzhikov, A; Ryzka, J; Silva, Jjs; Sagidova, N; Sahoo, N; Saitta, B; Salomoni, M; Gras, Cs; Sanderswood, I; Santacesaria, R; Rios, Cs; Santimaria, M; Santovetti, E; Saranin, D; Sarpis, G; Sarpis, M; Sarti, A; Satriano, C; Satta, A; Saur, M; Savrina, D; Sazak, H; Smead, Lgs; 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, Mh; Schwemmer, R; Sciascia, B; Sciuccati, A; Sellam, S; Semennikov, A; Soares, Ms; Sergi, A; Serra, N; Sestini, L; Seuthe, A; Shang, Y; Shangase, Dm; Shapkin, M; Shchemerov, I; Shchutska, L; Shears, T; Shekhtman, L; Shen, Z; Sheng, S; Shevchenko, V; Shi, B; Shields, Eb; Shimizu, Y; Shmanin, E; Shorkin, R; Shupperd, Jd; Siddi, Bg; Coutinho, Rs; Simi, G; Simone, S; Singla, M; Skidmore, N; Skuza, R; Skwarnicki, T; Slater, Mw; Smallwood, Jc; Smeaton, Jg; Smith, E; Smith, K; Smith, M; Snoch, A; Lavra, Ls; Sokoloff, Md; Soler, Fjp; Solomin, A; Solovev, A; Solovyev, I; Song, R; De Almeida, Fls; De Paula, Bs; Spaan, B; Norella, Es; Spedicato, E; Spiridenkov, E; Spradlin, P; Sriskaran, V; Stagni, F; Stahl, M; Stahl, S; Stanislaus, S; Stein, En; Steinkamp, O; Stenyakin, O; Stevens, H; Stone, S; Strekalina, D; Ys, Su; Suljik, F; Sun, J; Sun, L; Sun, Y; Svihra, P; Swallow, Pn; Swientek, K; Szabelski, A; Szumlak, T; Szymanski, M; Tan, Y; Taneja, S; Tat, Md; Terentev, A; Teubert, F; Thomas, E; Thompson, Djd; Thomson, Ka; Tilquin, H; Tisserand, V; T'Jampens, S; Tobin, M; Tomassetti, L; Tonani, G; Tong, X; Machado, Dt; Tou, Dy; Trilov, Sm; Trippl, C; Tuci, G; Tully, A; Tuning, N; Ukleja, A; Unverzagt, Dj; Usachov, A; Ustyuzhanin, A; Uwer, U; Vagner, A; Vagnoni, V; Valassi, A; Valenti, G; Canudas, Nv; Van Dijk, M; Van Hecke, H; van Herwijnen, E; Van Hulse, Cb; van Veghel, M; Gomez, Rv; Regueiro, Pv; Sierra, Cv; Vecchi, S; Velthuis, Jj; Veltri, M; Venkateswaran, A; Veronesi, M; Vesterinen, M; Vieira, D; Diaz, Mv; Vilasis-Cardona, X; Figueras, Ev; Villa, A; Vincent, P; Volle, Fc; Bruch, Dv; Vorobyev, A; Vorobyev, V; Voropaev, N; Vos, K; Vrahas, C; Walsh, 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, Ja; Watson, Nk; Websdale, D; Wei, Y; Westhenry, Bdc; White, Dj; Whitehead, M; Wiederhold, Ar; Wiedner, D; Wilkinson, G; Wilkinson, Mk; Williams, I; Williams, M; Williams, Mrj; Williams, R; Wilson, Ff; Wislicki, W; Witek, M; Witola, L; Wong, Cp; Wormser, G; Wotton, Sa; 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, Le; Yeroshenko, V; Yeung, H; Yin, H; Yu, J; Yuan, X; Zaffaroni, E; Zavertyaev, M; Zdybal, M; Zenaiev, O; 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/PhysRevD.108.032002

A simultaneous analysis of the B+→K+ℓ+ℓ- and B0→K∗0ℓ+ℓ- decays is performed to test muon-electron universality in two ranges of the square of the dilepton invariant mass, q2. The measurement uses a sample of beauty meson decays produced in proton-proton collisions collected with the LHCb detector between 2011 and 2018, corresponding to an integrated luminosity of 9 fb-1. A sequence of multivariate selections and strict particle identification requirements produce a higher signal purity and a better statistical sensitivity per unit luminosity than previous LHCb lepton universality tests using the same decay modes. Residual backgrounds due to misidentified hadronic decays are studied using data and included in the fit model. Each of the four lepton universality measurements reported is either the first in the given q2 interval or supersedes previous LHCb measurements. The results are compatible with the predictions of the Standard Model.