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Test of lepton universality with Λ0b→pK−ℓ+ℓ− decays
| File | Description | Size | Format | |
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 Aaij2020_Article_TestOfLeptonUniversalityWithΛb (1).pdf | Published version | 657.33 kB | Adobe PDF | View/Open |
| Title: | Test of lepton universality with Λ0b→pK−ℓ+ℓ− decays |
| Authors: | Aaij, R Abellán Beteta, C Ackernley, T Adeva, B Adinolfi, M Afsharnia, H Aidala, CA Aiola, S Ajaltouni, Z Akar, S Albicocco, P Albrecht, J Alessio, F Alexander, M Alfonso Albero, A Alkhazov, G Alvarez Cartelle, P Alves, AA Amato, S Amhis, Y An, L Anderlini, L Andreassi, G Andreotti, M Archilli, F Arnau Romeu, J Artamonov, A Artuso, M Arzymatov, K Aslanides, E Atzeni, M Audurier, B Bachmann, S Back, JJ Baker, S Balagura, V Baldini, W Baranov, A Barlow, RJ Barsuk, S Barter, W Bartolini, M Baryshnikov, F Bassi, G Batozskaya, V Batsukh, B Battig, A Bay, A Becker, M Bedeschi, F Bediaga, I Beiter, A Bel, LJ Belavin, V Belin, S Beliy, N Bellee, V Belous, K Belyaev, I Bencivenni, G Ben-Haim, E Benson, S Beranek, S Berezhnoy, A Bernet, R Berninghoff, D Bernstein, HC Bertella, C Bertholet, E Bertolin, A Betancourt, C Betti, F Bettler, MO Bezshyiko, I Bhasin, S Bhom, J Bieker, MS Bifani, S Billoir, P Bizzeti, A Bjørn, M Blago, MP Blake, T Blanc, F Blusk, S Bobulska, D Bocci, V Boente Garcia, O Boettcher, T Boldyrev, A Bondar, A Bondar, N Borghi, S Borisyak, M Borsato, M Borsuk, JT Bowcock, TJV Bozzi, C Bradley, MJ Braun, S Brea Rodriguez, A Brodski, M Brodzicka, J Brossa Gonzalo, A Brundu, D Buchanan, E Büchler-Germann, A Buonaura, A Burr, C Bursche, A Butter, JS Buytaert, J Byczynski, W Cadeddu, S Cai, H Calabrese, R Calero Diaz, L Cali, S Calladine, R Calvi, M Calvo Gomez, M Camargo Magalhaes, P Camboni, A Campana, P Campora Perez, DH Capriotti, L Carbone, A Carboni, G Cardinale, R Cardini, A Carniti, P Carvalho Akiba, K Casais Vidal, A Casse, G Cattaneo, M Cavallero, G Celani, S Cenci, R Cerasoli, J Chapman, MG Charles, M Charpentier, P Chatzikonstantinidis, G Chefdeville, M Chekalina, V Chen, C Chen, S Chernov, A Chitic, S-G Chobanova, V Chrzaszcz, M Chubykin, A Ciambrone, P Cicala, MF Cid Vidal, X Ciezarek, G Cindolo, F Clarke, PEL Clemencic, M Cliff, HV Closier, J Cobbledick, JL Coco, V Coelho, JAB Cogan, J Cogneras, E Cojocariu, L Collins, P Colombo, T Comerma-Montells, A Contu, A Cooke, N Coombs, G Coquereau, S Corti, G Costa Sobral, CM Couturier, B Craik, DC Crkovská, J Crocombe, A Cruz Torres, M Currie, R Da Silva, CL Dall’Occo, E Dalseno, J D’Ambrosio, C Danilina, A D’Argent, P Davis, A De Aguiar Francisco, O De Bruyn, K De Capua, S De Cian, M De Miranda, JM De Paula, L De Serio, M De Simone, P De Vries, JA Dean, CT Dean, W Decamp, D Del Buono, L Delaney, B Dembinski, H-P Demmer, M Dendek, A Denysenko, V Derkach, D Deschamps, O Desse, F Dettori, F Dey, B Di Canto, A Di Nezza, P Didenko, S Dijkstra, H Dobishuk, V Dordei, F Dorigo, M Dos Reis, AC Douglas, L Dovbnya, A Dreimanis, K Dudek, MW Dufour, L Dujany, G Durante, P Durham, JM Dutta, D Dziewiecki, M Dziurda, A Dzyuba, A Easo, S Egede, U Egorychev, V Eidelman, 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 Féo, M Fernandez Declara, P Fernandez Prieto, A Ferrari, F Ferreira Lopes, L Ferreira Rodrigues, F Ferreres Sole, S Ferrillo, M Ferro-Luzzi, M Filippov, S Fini, RA Fiorini, M Firlej, M Fischer, KM Fitzpatrick, C Fiutowski, T Fleuret, F Fontana, M Fontanelli, F Forty, R Franco Lima, V Franco Sevilla, M Frank, M Frei, C Friday, DA 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, LM García Pardiñas, J Garcia Plana, B Garcia Rosales, FA Garra Tico, J Garrido, L Gascon, D Gaspar, C Gerick, D Gersabeck, E Gersabeck, M Gershon, T Gerstel, D Ghez, P Gibson, V Gioventù, A Girard, OG Gironella Gironell, P Giubega, L Giugliano, C Gizdov, K Gligorov, VV Göbel, C Golobardes, E Golubkov, D Golutvin, A Gomes, A Gorbounov, P Gorelov, IV Gotti, C Govorkova, E Grabowski, JP Graciani Diaz, R Grammatico, T Granado Cardoso, LA Graugés, E Graverini, E Graziani, G Grecu, A Greim, R Griffith, P Grillo, L Gruber, L Gruberg Cazon, BR Gu, C Gushchin, E Guth, A Guz, Y Gys, T Günther, PA Hadavizadeh, T Haefeli, G Haen, C Haines, SC Hamilton, PM Han, Q Han, X Hancock, TH Hansmann-Menzemer, S Harnew, N Harrison, T Hart, R Hasse, C Hatch, M He, J Hecker, M Heijhoff, K Heinicke, K Heister, A Hennequin, AM Hennessy, K Henry, L Heuel, J Hicheur, A Hill, D Hilton, M Hopchev, PH Hu, J Hu, W Huang, W Hulsbergen, W Humair, T Hunter, RJ 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, BK Jawahery, A Jevtic, V Jiang, F John, M Johnson, D Jones, CR Jost, B Jurik, N Kandybei, S Karacson, M Kariuki, JM Kazeev, N Kecke, M Keizer, F Kelsey, M Kenzie, M Ketel, T Khanji, B Kharisova, A Kim, KE Kirn, T Kirsebom, VS Klaver, S Klimaszewski, K Koliiev, S Kondybayeva, A Konoplyannikov, A Kopciewicz, P Kopecna, R Koppenburg, P Korolev, M Kostiuk, I Kot, O Kotriakhova, S Kravchuk, L Krawczyk, RD Kreps, M Kress, F Kretzschmar, S Krokovny, P Krupa, W Krzemien, W Kucewicz, W Kucharczyk, M Kudryavtsev, V Kuindersma, HS Kunde, GJ Kvaratskheliya, T Lacarrere, D Lafferty, G Lai, A Lancierini, D Lane, JJ Lanfranchi, G Langenbruch, C Lantwin, O Latham, T Lazzari, F Lazzeroni, C Le Gac, R Lefèvre, R Leflat, A Leroy, O Lesiak, T Leverington, B Li, H Li, X Li, Y Li, Z Liang, X Lindner, R Lisovskyi, V Liu, G Liu, X Loh, D Loi, A Lomba Castro, J Longstaff, I Lopes, JH Loustau, G Lovell, GH Lu, Y Lucchesi, D Lucio Martinez, M Luo, Y Lupato, A Luppi, E Lupton, O Lusiani, A Lyu, X Maccolini, S Machefert, F Maciuc, F Macko, V Mackowiak, P Maddrell-Mander, S Madhan Mohan, LR Maev, O Maevskiy, A Maisuzenko, D Majewski, MW Malde, S Malecki, B Malinin, A Maltsev, T Malygina, H Manca, G Mancinelli, G Manera Escalero, R Manuzzi, D Marangotto, D Maratas, J Marchand, JF Marconi, U Mariani, S Marin Benito, C Marinangeli, M Marino, P Marks, J Marshall, PJ Martellotti, G Martinazzoli, L Martinelli, M Martinez Santos, D Martinez Vidal, F Massafferri, A Materok, M Matev, R Mathad, A Mathe, Z Matiunin, V Matteuzzi, C Mattioli, KR Mauri, A Maurice, E McCann, M Mcconnell, L McNab, A McNulty, R Mead, JV Meadows, B Meaux, C Meier, G Meinert, N Melnychuk, D Meloni, S Merk, M Merli, A Mikhasenko, M Milanes, DA Millard, E Minard, M-N Mineev, O Minzoni, L Mitchell, SE Mitreska, B Mitzel, DS Mödden, A Mogini, A Moise, RD Mombächer, T Monroy, IA Monteil, S Morandin, M Morello, G Morello, MJ Moron, J Morris, AB Morris, AG Mountain, R Mu, H Muheim, F Mukherjee, M Mulder, M Müller, D Müller, K Müller, V Murphy, CH Murray, D Muzzetto, P Naik, P Nakada, T Nandakumar, R Nandi, A Nanut, T Nasteva, I Needham, M Neri, N Neubert, S Neufeld, N Newcombe, R Nguyen, TD Nguyen-Mau, C Niel, EM Nieswand, S Nikitin, N Nolte, NS Nunez, C Oblakowska-Mucha, A Obraztsov, V Ogilvy, S O’Hanlon, DP Oldeman, R Onderwater, CJG Osborn, JD Ossowska, A Otalora Goicochea, JM Ovsiannikova, T Owen, P Oyanguren, A Pais, PR Pajero, T Palano, A Palutan, M Panshin, G Papanestis, A Pappagallo, M Pappalardo, LL Pappenheimer, C Parker, W Parkes, C Passaleva, G Pastore, A Patel, M Patrignani, C Pearce, A Pellegrino, A Pepe Altarelli, M Perazzini, 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, V Playfer, S Plews, J Plo Casasus, M Polci, F Poli Lener, M Poliakova, M Poluektov, A Polukhina, N Polyakov, I Polycarpo, E Pomery, GJ Ponce, S Popov, A Popov, D Poslavskii, S Prasanth, K Promberger, L Prouve, C Pugatch, V Puig Navarro, A Pullen, H Punzi, G Qian, W Qin, J Quagliani, R Quintana, B Raab, NV Rabadan Trejo, RI Rachwal, B Rademacker, JH Rama, M Ramos Pernas, M Rangel, MS Ratnikov, F Raven, G Reboud, M Redi, F Reiss, F Remon Alepuz, C Ren, Z Renaudin, V Ricciardi, S Richards, S Rinnert, K Robbe, P Robert, A Rodrigues, AB Rodrigues, E Rodriguez Lopez, JA Roehrken, M Roiser, S Rollings, A Romanovskiy, V Romero Lamas, M Romero Vidal, A Roth, JD Rotondo, M Rudolph, MS Ruf, T Ruiz Vidal, J Ryzka, J Saborido Silva, JJ Sagidova, N Saitta, B Sanchez Gras, C Sanchez Mayordomo, C Santacesaria, R Santamarina Rios, C Santimaria, M Santovetti, E Sarpis, G Sarti, A Satriano, C Satta, A Saur, M Savrina, D Scantlebury Smead, LG Schael, S Schellenberg, M Schiller, M Schindler, H Schmelling, M Schmelzer, T Schmidt, B Schneider, O Schopper, A Schreiner, HF Schubiger, M Schulte, S Schune, MH Schwemmer, R Sciascia, B Sciubba, A Sellam, S Semennikov, A Sergi, A Serra, N Serrano, J Sestini, L Seuthe, A Seyfert, P Shangase, DM Shapkin, M Shchutska, L Shears, T Shekhtman, L Shevchenko, V Shmanin, E Shupperd, JD Siddi, BG Silva Coutinho, R Silva de Oliveira, L Simi, G Simone, S Skiba, I Skidmore, N Skwarnicki, T Slater, MW Smeaton, JG Smetkina, A Smith, E Smith, IT Smith, M Snoch, A Soares, M Soares Lavra, L Sokoloff, MD Soler, FJP Souza De Paula, B Spaan, B Spadaro Norella, E Spradlin, P Stagni, F Stahl, M Stahl, S Stefko, P Steinkamp, O Stemmle, S Stenyakin, O Stepanova, M Stevens, H Stone, S Stracka, S Stramaglia, ME 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, KA Tilley, MJ Tisserand, V T’Jampens, S Tobin, M Tolk, S Tomassetti, L Tonelli, D Torres Machado, D Tou, DY Tournefier, E Traill, M Tran, MT 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, CB Van Veghel, M Vazquez Gomez, R Vazquez Regueiro, P Vázquez Sierra, C Vecchi, S Velthuis, JJ Veltri, M Venkateswaran, A Vernet, M Veronesi, M Vesterinen, M Viana Barbosa, JV Vieira, D Vieites Diaz, M Viemann, H Vilasis-Cardona, X Vitkovskiy, A Vollhardt, A Vom Bruch, D Vorobyev, A Vorobyev, V Voropaev, N Waldi, R Walsh, J Wang, J Wang, J Wang, J Wang, M Wang, Y Wang, Z Ward, DR Wark, HM Watson, NK Websdale, D Weiden, A Weisser, C Westhenry, BDC White, DJ Whitehead, M Wiedner, D Wilkinson, G Wilkinson, M Williams, I Williams, M Williams, MRJ Williams, T Wilson, FF Wislicki, W Witek, M Witola, L Wormser, G Wotton, SA Wu, H Wyllie, K Xiang, Z Xiao, D Xie, Y Xing, H Xu, A Xu, L Xu, M Xu, Q Xu, Z Xu, Z Yang, Z Yang, Z Yao, Y Yeomans, LE Yin, H Yu, J Yuan, X Yushchenko, O Zarebski, KA Zavertyaev, M Zdybal, M Zeng, M Zhang, D Zhang, L Zhang, S Zhang, WC Zhang, Y Zhelezov, A Zheng, Y Zhou, X Zhou, Y Zhu, X Zhukov, V Zonneveld, JB Zucchelli, S |
| Item Type: | Journal Article |
| Abstract: | The ratio of branching fractions of the decays Λ0b → pK−e+e− and Λ0b → pK−μ+μ−,R−1pK, 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 < q2< 6.0 GeV2/c4 and the pK− mass range m(pK−) < 2600 MeV/c2, the ratio of branching fractions is measured to be R−1pK=1.17+0.18−0.16±0.07, 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 Λ0b → pK−e+e−. |
| Issue Date: | 11-May-2020 |
| Date of Acceptance: | 10-Apr-2020 |
| URI: | http://hdl.handle.net/10044/1/80053 |
| DOI: | 10.1007/jhep05(2020)040 |
| Publisher: | Springer Science and Business Media LLC |
| Start Page: | 1 |
| End Page: | 27 |
| Journal / Book Title: | Journal of High Energy Physics |
| Volume: | 2020 |
| Issue: | 5 |
| Copyright Statement: | This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0) (https://creativecommons.org/licenses/by/4.0/), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. |
| Keywords: | 0105 Mathematical Physics 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics 0206 Quantum Physics Nuclear & Particles Physics |
| Publication Status: | Published |
| Open Access location: | https://link.springer.com/article/10.1007%2FJHEP05%282020%29040 |
| Article Number: | 40 |
| Online Publication Date: | 2020-05-11 |
| Appears in Collections: | Physics High Energy Physics |