Long-lived particles decaying to e±μ∓ν, with masses between 7 and 50GeV/c2 and lifetimes between 2 and 50ps, are searched for by looking at displaced vertices containing electrons and muons of opposite charges. The search is performed using 5.4fb-1 of pp collisions collected with the LHCb detector at a centre-of-mass energy of s=13TeV. Three mechanisms of production of long-lived particles are considered: the direct pair production from quark interactions, the pair production from the decay of a Standard-Model-like Higgs boson with a mass of 125GeV/c2, and the charged current production from an on-shell W boson with an additional lepton. No evidence of these long-lived states is obtained and upper limits on the production cross-section times branching fraction are set on the different production modes.

Aaij, R., Beteta, C., Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., et al. (2021). Search for long-lived particles decaying to e± μ∓ ν. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 81(3) [10.1140/epjc/s10052-021-08994-0].

Search for long-lived particles decaying to e± μ∓ ν

Calvi M.
Membro del Collaboration Group
;
Capelli S.;Carniti P.
Membro del Collaboration Group
;
Fazzini D.
Membro del Collaboration Group
;
Gotti C.
Membro del Collaboration Group
;
Martinazzoli L.
Membro del Collaboration Group
;
Martinelli M.
Membro del Collaboration Group
;
Meloni S.
Membro del Collaboration Group
;
Petruzzo M.
Membro del Collaboration Group
;
Shields E. B.
Membro del Collaboration Group
;
2021

Abstract

Long-lived particles decaying to e±μ∓ν, with masses between 7 and 50GeV/c2 and lifetimes between 2 and 50ps, are searched for by looking at displaced vertices containing electrons and muons of opposite charges. The search is performed using 5.4fb-1 of pp collisions collected with the LHCb detector at a centre-of-mass energy of s=13TeV. Three mechanisms of production of long-lived particles are considered: the direct pair production from quark interactions, the pair production from the decay of a Standard-Model-like Higgs boson with a mass of 125GeV/c2, and the charged current production from an on-shell W boson with an additional lepton. No evidence of these long-lived states is obtained and upper limits on the production cross-section times branching fraction are set on the different production modes.
Articolo in rivista - Articolo scientifico
Flavour Physics, Standard Model, Higgs boson;
English
LHCb Collaboration
Aaij, R., Beteta, C., Ackernley, T., Adeva, B., Adinolfi, M., Afsharnia, H., et al. (2021). Search for long-lived particles decaying to e± μ∓ ν. THE EUROPEAN PHYSICAL JOURNAL. C, PARTICLES AND FIELDS, 81(3) [10.1140/epjc/s10052-021-08994-0].
Aaij, R; Beteta, C; Ackernley, T; Adeva, B; Adinolfi, M; Afsharnia, H; Aidala, C; Aiola, S; Ajaltouni, Z; Akar, S; Albrecht, J; Alessio, F; Alexander, M; Albero, A; Aliouche, Z; Alkhazov, G; Cartelle, P; Amato, S; Amhis, Y; An, L; Anderlini, L; Andreianov, A; Andreotti, M; Archilli, F; Artamonov, A; Artuso, M; Arzymatov, K; Aslanides, E; Atzeni, M; Audurier, B; Bachmann, S; Bachmayer, M; Back, J; Baker, S; Rodriguez, P; Balagura, V; Baldini, W; Leite, J; Barlow, R; Barsuk, S; Barter, W; Bartolini, M; Baryshnikov, F; Basels, J; Bassi, G; Batsukh, B; Battig, A; Bay, A; Becker, M; Bedeschi, F; Bediaga, I; Beiter, A; Belavin, V; Belin, S; Bellee, V; Belous, K; Belov, I; Belyaev, I; Bencivenni, G; Ben-Haim, E; Berezhnoy, A; Bernet, R; Berninghoff, D; Bernstein, H; Bertella, C; Bertholet, E; Bertolin, A; Betancourt, C; Betti, F; Bettler, M; Bezshyiko, I; Bhasin, S; Bhom, J; Bian, L; Bieker, M; Bifani, S; Billoir, P; Birch, M; Bishop, F; Bizzeti, A; Bjorn, M; Blago, M; Blake, T; Blanc, F; Blusk, S; Bobulska, D; Boelhauve, J; Garcia, O; Boettcher, T; Boldyrev, A; Bondar, A; Bondar, N; Borghi, S; Borisyak, M; Borsato, M; Borsuk, J; Bouchiba, S; Bowcock, T; Boyer, A; Bozzi, C; Bradley, M; Braun, S; Rodriguez, A; Brodski, M; Brodzicka, J; Gonzalo, A; Brundu, D; Buonaura, A; Burr, C; Bursche, A; Butkevich, A; Butter, J; Buytaert, J; Byczynski, W; Cadeddu, S; Cai, H; Calabrese, R; Calefice, L; Diaz, L; Cali, S; Calladine, R; Calvi, M; Gomez, M; Magalhaes, P; Camboni, A; Campana, P; Perez, D; Quezada, A; Capelli, S; Capriotti, L; Carbone, A; Carboni, G; Cardinale, R; Cardini, A; Carli, I; Carniti, P; Carus, L; Akiba, K; Vidal, A; Casse, G; Cattaneo, M; Cavallero, G; Celani, S; Cerasoli, J; Chadwick, A; Chapman, M; Charles, M; Charpentier, P; Chatzikonstantinidis, G; Barajas, C; Chefdeville, M; Chen, C; Chen, S; Chernov, A; Chitic, S; Chobanova, V; Cholak, S; Chrzaszcz, M; Chubykin, A; Chulikov, V; Ciambrone, P; Cicala, M; Vidal, X; Ciezarek, G; Clarke, P; Clemencic, M; Cliff, H; Closier, J; Cobbledick, J; Coco, V; Coelho, J; Cogan, J; Cogneras, E; Cojocariu, L; Collins, P; Colombo, T; Congedo, L; Contu, A; Cooke, N; Coombs, G; Corti, G; Sobral, C; Couturier, B; Craik, D; Crkovska, J; Torres, M; Currie, R; Da Silva, C; 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, J; De Paula, L; De Serio, M; De Simone, D; De Simone, P; de Vries, J; Dean, C; Dean, W; Decamp, D; Buono, L; Delaney, B; Dembinski, H; Dendek, A; Denysenko, V; Derkach, D; Deschamps, O; Desse, F; Dettori, F; Dey, B; Nezza, P; Didenko, S; Maronas, L; Dijkstra, H; Dobishuk, V; Donohoe, A; Dordei, F; Reis, A; Douglas, L; Dovbnya, A; Downes, A; Dreimanis, K; Dudek, M; Dufour, L; Duk, V; Durante, P; Durham, J; Dutta, D; Dziewiecki, M; Dziurda, A; Dzyuba, A; Easo, S; Egede, U; Egorychev, V; Eidelman, S; Eisenhardt, S; Ek-In, S; Eklund, L; Ely, S; Ene, A; Epple, E; Escher, S; Eschle, J; Esen, S; Evans, T; Falabella, A; Fan, J; Fan, Y; Fang, B; Farley, N; Farry, S; Fazzini, D; Fedin, P; Feo, M; Declara, P; Prieto, A; Arribas, J; Ferrari, F; Lopes, L; Rodrigues, F; Sole, S; Ferrillo, M; Ferro-Luzzi, M; Filippov, S; Fini, R; Fiorini, M; Firlej, M; Fischer, K; Fitzpatrick, C; Fiutowski, T; Fleuret, F; Fontana, M; Fontanelli, F; Forty, R; Lima, V; Sevilla, M; Frank, M; Franzoso, E; Frau, G; Frei, C; Friday, D; Fu, J; Fuehring, Q; Funk, W; Gabriel, E; Gaintseva, T; Torreira, A; Galli, D; Gambetta, S; Gan, Y; Gandelman, M; Gandini, P; Gao, Y; Garau, M; Martin, L; Moreno, P; Pardinas, J; Plana, B; Rosales, F; Garrido, L; Gascon, D; Gaspar, C; Geertsema, R; Gerick, D; Gerken, L; Gersabeck, E; Gersabeck, M; Gershon, T; Gerstel, D; Ghez, P; Gibson, V; Giovannetti, M; Gioventu, A; Gironell, P; Giubega, L; Giugliano, C; Gizdov, K; Gkougkousis, E; Gligorov, V; Gobel, C; Golobardes, E; Golubkov, D; Golutvin, A; Gomes, A; Fernandez, S; Abrantes, F; Goncerz, M; Gong, G; Gorbounov, P; Gorelov, I; Gotti, C; Govorkova, E; Grabowski, J; Diaz, R; Grammatico, T; Cardoso, L; Grauges, E; Graverini, E; Graziani, G; Grecu, A; Greeven, L; Griffith, P; Grillo, L; Gromov, S; Gruber, L; Cazon, B; Gu, C; Guarise, M; Gunther, P; Gushchin, E; Guth, A; Guz, Y; Gys, T; Hadavizadeh, T; Haefeli, G; Haen, C; Haimberger, J; Haines, S; Halewood-leagas, T; Hamilton, P; Han, Q; Han, X; Hancock, T; Hansmann-Menzemer, S; Harnew, N; Harrison, T; Hasse, C; Hatch, M; He, J; Hecker, M; Heijhoff, K; Heinicke, K; Hennequin, A; Hennessy, K; Henry, L; Heuel, J; Hicheur, A; Hill, D; Hilton, M; Hollitt, S; Hopchev, P; Hu, J; Hu, J; Hu, W; Huang, W; Huang, X; Hulsbergen, W; Hunter, R; Hushchyn, M; Hutchcroft, D; Hynds, D; Ibis, P; Idzik, M; Ilin, D; Ilten, P; Inglessi, A; Ishteev, A; Ivshin, K; Jacobsson, R; Jakobsen, S; Jans, E; Jashal, B; Jawahery, A; Jevtic, V; Jezabek, M; Jiang, F; John, M; Johnson, D; Jones, C; Jones, T; Jost, B; Jurik, N; Kandybei, S; Kang, Y; Karacson, M; Karpov, M; Kazeev, N; Keizer, F; Kenzie, M; Ketel, T; Khanji, B; Kharisova, A; Kholodenko, S; Kim, K; Kirn, T; Kirsebom, V; Kitouni, O; Klaver, S; Klimaszewski, K; Koliiev, S; Kondybayeva, A; Konoplyannikov, A; Kopciewicz, P; Kopecna, R; Koppenburg, P; Korolev, M; Kostiuk, I; Kot, O; Kotriakhova, S; Kravchenko, P; Kravchuk, L; Krawczyk, R; Kreps, M; Kress, F; Kretzschmar, S; Krokovny, P; Krupa, W; Krzemien, W; Kucewicz, W; Kucharczyk, M; Kudryavtsev, V; Kuindersma, H; Kunde, G; Kvaratskheliya, T; Lacarrere, D; Lafferty, G; Lai, A; Lampis, A; Lancierini, D; Lane, J; Lane, R; Lanfranchi, G; Langenbruch, C; Langer, J; Lantwin, O; Latham, T; Lazzari, F; Gac, R; Lee, S; Lefevre, R; Leflat, A; Legotin, S; Leroy, O; Lesiak, T; Leverington, B; Li, H; Li, L; Li, P; Li, X; Li, Y; Li, Y; Li, Z; Liang, X; Lin, T; Lindner, R; Lisovskyi, V; Litvinov, R; Liu, G; Liu, H; Liu, S; Liu, X; Loi, A; Castro, J; Longstaff, I; Lopes, J; Loustau, G; Lovell, G; Lu, Y; Lucchesi, D; Luchuk, S; Martinez, M; Lukashenko, V; Luo, Y; Lupato, A; Luppi, E; Lupton, O; Lusiani, A; Lyu, X; Ma, L; Maccolini, S; Machefert, F; Maciuc, F; Macko, V; Mackowiak, P; Maddrell-Mander, S; Madejczyk, O; Mohan, L; Maev, O; Maevskiy, A; Maisuzenko, D; Majewski, M; Malczewski, J; Malde, S; Malecki, B; Malinin, A; Maltsev, T; Malygina, H; Manca, G; Mancinelli, G; Escalero, R; Manuzzi, D; Marangotto, D; Maratas, J; Marchand, J; Marconi, U; Mariani, S; Benito, C; Marinangeli, M; Marino, P; Marks, J; Marshall, P; Martellotti, G; Martinazzoli, L; Martinelli, M; Santos, D; Vidal, F; Massafferri, A; Materok, M; Matev, R; Mathad, A; Mathe, Z; Matiunin, V; Matteuzzi, C; Mattioli, K; Mauri, A; Maurice, E; Mauricio, J; Mazurek, M; Mccann, M; Mcconnell, L; Mcgrath, T; Mcnab, A; Mcnulty, R; Mead, J; Meadows, B; Meaux, C; Meier, G; Meinert, N; Melnychuk, D; Meloni, S; Merk, M; Merli, A; Garcia, L; Mikhasenko, M; Milanes, D; Millard, E; Milovanovic, M; Minard, M; Minzoni, L; Mitchell, S; Mitreska, B; Mitzel, D; Modden, A; Mohammed, R; Moise, R; Mombacher, T; Monroy, I; Monteil, S; Morandin, M; Morello, G; Morello, M; Moron, J; Morris, A; Morris, A; Mountain, R; Mu, H; Muheim, F; Mukherjee, M; Mulder, M; Muller, D; Muller, K; Murphy, C; Murray, D; Muzzetto, P; Naik, P; Nakada, T; Nandakumar, R; Nanut, T; Nasteva, I; Needham, M; Neri, I; Neri, N; Neubert, S; Neufeld, N; Newcombe, R; Nguyen, T; Nguyen-Mau, C; Niel, E; Nieswand, S; Nikitin, N; Nolte, N; Nunez, C; Oblakowska-Mucha, A; Obraztsov, V; O'Hanlon, D; Oldeman, R; Olivares, M; Onderwater, C; Ossowska, A; Goicochea, J; Ovsiannikova, T; Owen, P; Oyanguren, A; Pagare, B; Pais, P; Pajero, T; Palano, A; Palutan, M; Pan, Y; Panshin, G; Papanestis, A; Pappagallo, M; Pappalardo, L; Pappenheimer, C; Parker, W; Parkes, C; Parkinson, C; Passalacqua, B; Passaleva, G; Pastore, A; Patel, M; Patrignani, C; Pawley, C; Pearce, A; Pellegrino, A; Altarelli, M; Perazzini, S; Pereima, D; Perret, P; Petridis, K; Petrolini, A; Petrov, A; Petrucci, S; Petruzzo, M; Pham, T; Philippov, A; Pica, L; Piccini, M; Pietrzyk, B; Pietrzyk, G; Pili, M; Pinci, D; Pinzino, J; Pisani, F; Piucci, A; P. K, R; Placinta, V; Playfer, S; Plews, J; Casasus, M; Polci, F; Lener, M; Poliakova, M; Poluektov, A; Polukhina, N; Polyakov, I; Polycarpo, E; Pomery, G; Ponce, S; Popov, A; Popov, D; Popov, S; Poslavskii, S; Prasanth, K; Promberger, L; Prouve, C; Pugatch, V; Navarro, A; Pullen, H; Punzi, G; Qian, W; Qin, J; Quagliani, R; Quintana, B; Raab, N; Trejo, R; Rachwal, B; Rademacker, J; Rama, M; Pernas, M; Rangel, M; Ratnikov, F; Raven, G; Reboud, M; Redi, F; Reiss, F; Alepuz, C; Ren, Z; Renaudin, V; Ribatti, R; Ricciardi, S; Rinnert, K; Robbe, P; Robert, A; Robertson, G; Rodrigues, A; Rodrigues, E; Lopez, J; Rollings, A; Roloff, P; Romanovskiy, V; Lamas, M; Vidal, A; Roth, J; Rotondo, M; Rudolph, M; Ruf, T; Vidal, J; Ryzhikov, A; Ryzka, J; Silva, J; Sagidova, N; Sahoo, N; Saitta, B; Gonzalo, D; Gras, C; Santacesaria, R; Rios, C; Santimaria, M; Santovetti, E; Saranin, D; Sarpis, G; Sarpis, M; Sarti, A; Satriano, C; Satta, A; Saur, M; Savrina, D; Sazak, H; Smead, L; Schael, S; Schellenberg, M; Schiller, M; Schindler, H; Schmelling, M; Schmelzer, T; Schmidt, B; Schneider, O; Schopper, A; Schubiger, M; Schulte, S; Schune, M; Schwemmer, R; Sciascia, B; Sciubba, A; Sellam, S; Semennikov, A; Soares, M; Sergi, A; Serra, N; Serrano, J; Sestini, L; Seuthe, A; Seyfert, P; Shangase, D; Shapkin, M; Shchemerov, I; Shchutska, L; Shears, T; Shekhtman, L; Shen, Z; Shevchenko, V; Shields, E; Shmanin, E; Shupperd, J; Siddi, B; Coutinho, R; Simi, G; Simone, S; Skiba, I; Skidmore, N; Skwarnicki, T; Slater, M; Smallwood, J; Smeaton, J; Smetkina, A; Smith, E; Smith, M; Snoch, A; Soares, M; Lavra, L; Sokoloff, M; Soler, F; Solovev, A; Solovyev, I; De Almeida, F; De Paula, B; Spaan, B; Norella, E; Spradlin, P; Stagni, F; Stahl, M; Stahl, S; Stefko, P; Steinkamp, O; Stemmle, S; Stenyakin, O; Stevens, H; Stone, S; Stramaglia, M; Straticiuc, M; Strekalina, D; Strokov, S; Suljik, F; Sun, J; Sun, L; Sun, Y; Svihra, P; Swallow, P; Swientek, K; Szabelski, A; Szumlak, T; Szymanski, M; Taneja, S; Tang, Z; Tekampe, T; Teubert, F; Thomas, E; Thomson, K; Tilley, M; Tisserand, V; T'Jampens, S; Tobin, M; Tolk, S; Tomassetti, L; Machado, D; Tou, D; Traill, M; Tran, M; Trifonova, E; Trippl, C; Tsaregorodtsev, A; Tuci, G; Tully, A; Tuning, N; Ukleja, A; Unverzagt, D; Ursov, E; Usachov, A; Ustyuzhanin, A; Uwer, U; Vagner, A; Vagnoni, V; Valassi, A; Valenti, G; Canudas, N; Beuzekom, M; Dijk, M; Hecke, H; Herwijnen, E; Hulse, C; Veghel, M; Gomez, R; Regueiro, P; Sierra, C; Vecchi, S; Velthuis, J; Veltri, M; Venkateswaran, A; Veronesi, M; Vesterinen, M; Vieira, D; Diaz, M; Viemann, H; Vilasis-Cardona, X; Figueras, E; Vincent, P; Vitali, G; Vollhardt, A; Bruch, D; Vorobyev, A; Vorobyev, V; Voropaev, N; Waldi, R; Walsh, J; Wang, C; Wang, J; Wang, J; Wang, J; Wang, J; Wang, M; Wang, R; Wang, Y; Wang, Z; Wark, H; Watson, N; Weber, S; Websdale, D; Weisser, C; Westhenry, B; White, D; Whitehead, M; Wiedner, D; Wilkinson, G; Wilkinson, M; Williams, I; Williams, M; Williams, M; Wilson, F; Wislicki, W; Witek, M; Witola, L; Wormser, G; Wotton, S; Wu, H; Wyllie, K; Xiang, Z; Xiao, D; Xie, Y; Xing, H; Xu, A; Xu, J; Xu, L; Xu, M; Xu, Q; Xu, Z; Xu, Z; Yang, D; Yang, Y; Yang, Z; Yang, Z; Yao, Y; Yeomans, L; Yin, H; Yu, J; Yuan, X; Yushchenko, O; Zaffaroni, E; Zarebski, K; Zavertyaev, M; Zdybal, M; Zenaiev, O; Zeng, M; Zhang, D; Zhang, L; Zhang, S; Zhang, Y; Zhang, Y; Zhelezov, A; Zheng, Y; Zhou, X; Zhou, Y; Zhu, X; Zhukov, V; Zonneveld, J; Zucchelli, S; Zuliani, D; Zunica, G
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/374939
Citazioni
  • Scopus 10
  • ???jsp.display-item.citation.isi??? 5
Social impact