Search for dark photons produced in 13 TeV $pp$ collisions

Abstract

Searches are performed for both promptlike and long-lived dark photons, A 0 , produced in proton-proton collisions at a center-of-mass energy of 13 TeV, using A 0 → μ þ μ − decays and a data sample corresponding to an integrated luminosity of 1 . 6 fb − 1 collected with the LHCb detector. The promptlike A 0 search covers the mass range from near the dimuon threshold up to 70 GeV, while the long-lived A 0 search is restricted to the low-mass region 214 <m ð A 0 Þ < 350 MeV. No evidence for a signal is found, and 90% confidence level exclusion limits are placed on the γ – A 0 kinetic-mixing strength. The constraints placed on promptlike dark photons are the most stringent to date for the mass range 10 . 6 <m ð A 0 Þ < 70 GeV, and are comparable to the best existing limits for m ð A 0 Þ < 0 . 5 GeV. The search for long-lived dark photons is the first to achieve sensitivity using a displaced-vertex signature.

Metadata

Item Type:	Article
Authors/Creators:	collaboration, L Aaij, R Adeva, B Adinolfi, M Ajaltouni, Z Akar, S Albrecht, J Alessio, F Alexander, M Albero, AA Ali, S Alkhazov, G Cartelle, PA Jr, AAA Amato, S Amerio, S Amhis, Y An, L Anderlini, L Andreassi, G Andreotti, M Andrews, JE Appleby, RB Archilli, F d'Argent, P Romeu, JA Artamonov, A Artuso, M Aslanides, E Atzeni, M Auriemma, G Baalouch, M Babuschkin, I Bachmann, S Back, JJ Badalov, A Baesso, C Baker, S Balagura, V Baldini, W Baranov, A Barlow, RJ Barschel, C Barsuk, S Barter, W Baryshnikov, F Batozskaya, V Battista, V Bay, A Beaucourt, L Beddow, J Bedeschi, F Bediaga, I Beiter, A Bel, LJ Beliy, N Bellee, V Belloli, N Belous, K Belyaev, I Ben-Haim, E Bencivenni, G Benson, S Beranek, S Berezhnoy, A Bernet, R Berninghoff, D Bertholet, E Bertolin, A Betancourt, C Betti, F Bettler, M-O Beuzekom, MV Bezshyiko, I Bifani, S Billoir, P Birnkraut, A Bizzeti, A Bjørn, M Blake, T Blanc, F Blusk, S Bocci, V Boettcher, T Bondar, A Bondar, N Bordyuzhin, I Borghi, S Borisyak, M Borsato, M Bossu, F Boubdir, M Bowcock, TJV Bowen, E Bozzi, C Braun, S Britton, T Brodzicka, J Brundu, D Buchanan, E Burr, C Bursche, A Buytaert, J Byczynski, W Cadeddu, S Cai, H Calabrese, R Calladine, R Calvi, M Gomez, MC Camboni, A Campana, P Perez, DHC Capriotti, L Carbone, A Carboni, G Cardinale, R Cardini, A Carniti, P Carson, L Akiba, KC Casse, G Cassina, L Cattaneo, M Cavallero, G Cenci, R Chamont, D Chapman, MG Charles, M Charpentier, P Chatzikonstantinidis, G Chefdeville, M Chen, S Cheung, SF Chitic, S-G Chobanova, V Chrzaszcz, M Chubykin, A Ciambrone, P Vidal, XC Ciezarek, G Clarke, PEL Clemencic, M Cliff, HV Closier, J Cogan, J Cogneras, E Cogoni, V Cojocariu, L Collins, P Colombo, T Comerma-Montells, A Contu, A Cook, A Coombs, G Coquereau, S Corti, G Corvo, M Sobral, CMC Couturier, B Cowan, GA Craik, DC Crocombe, A Torres, MC Currie, R D'Ambrosio, C Marinho, FDC Dall'Occo, E Dalseno, J Davis, A Francisco, ODA Capua, SD Cian, MD Miranda, JMD Paula, LD Serio, MD Simone, PD Dean, CT Decamp, D Buono, LD Dembinski, H-P Demmer, M Dendek, A Derkach, D Deschamps, O Dettori, F Dey, B Canto, AD Nezza, PD Dijkstra, H Dordei, F Dorigo, M Suárez, AD Douglas, L Dovbnya, A Dreimanis, K Dufour, L Dujany, G Durante, P Dzhelyadin, R Dziewiecki, M Dziurda, A Dzyuba, A Easo, S Ebert, M Egede, U Egorychev, V Eidelman, S Eisenhardt, S Eitschberger, U Ekelhof, R Eklund, L Ely, S Esen, S Evans, HM Evans, T Falabella, A Farley, N Farry, S Fazzini, D Federici, L Ferguson, D Fernandez, G Declara, PF Prieto, AF Ferrari, F Rodrigues, FF Ferro-Luzzi, M Filippov, S Fini, RA Fiorini, M Firlej, M Fitzpatrick, C Fiutowski, T Fleuret, F Fohl, K Fontana, M Fontanelli, F Forshaw, DC Forty, R Lima, VF Frank, M Frei, C Fu, J Funk, W Furfaro, E Färber, C Gabriel, E Torreira, AG Galli, D Gallorini, S Gambetta, S Gandelman, M Gandini, P Gao, Y Martin, LMG Pardiñas, JG Tico, JG Garrido, L Garsed, PJ Gascon, D Gaspar, C Gavardi, L Gazzoni, G Gerick, D Gersabeck, E Gersabeck, M Gershon, T Ghez, P Gianì, S Gibson, V Girard, OG Giubega, L Gizdov, K Gligorov, VV Golubkov, D Golutvin, A Gomes, A Gorelov, IV Gotti, C Govorkova, E Grabowski, JP Diaz, RG Cardoso, LAG Graugés, E Graverini, E Graziani, G Grecu, A Greim, R Griffith, P Grillo, L Gruber, L Cazon, BRG Grünberg, O Gushchin, E Guz, Y Gys, T Göbel, C Hadavizadeh, T Hadjivasiliou, C Haefeli, G Haen, C Haines, SC Hamilton, B Han, X Hancock, TH Hansmann-Menzemer, S Harnew, N Harnew, ST Hasse, C Hatch, M He, J Hecker, M Heinicke, K Heister, A Hennessy, K Henrard, P Henry, L Herwijnen, EV Heß, M Hicheur, A Hill, D Hombach, C Hopchev, PH Hu, W Huard, ZC Hulsbergen, W Humair, T Hushchyn, M Hutchcroft, D Ibis, P Idzik, M Ilten, P Jacobsson, R Jalocha, J Jans, E Jawahery, A Jiang, F John, M Johnson, D Jones, CR Joram, C Jost, B Jurik, N Kandybei, S Karacson, M Kariuki, JM Karodia, S Kazeev, N Kecke, M Keizer, F Kelsey, M Kenzie, M Ketel, T Khairullin, E Khanji, B Khurewathanakul, C Kirn, T Klaver, S Klimaszewski, K Klimkovich, T Koliiev, S Kolpin, M Kopecna, R Koppenburg, P Kosmyntseva, A Kotriakhova, S Kozeiha, M Kravchuk, L Kreps, M Kress, F Krokovny, P Kruse, F Krzemien, W Kucewicz, W Kucharczyk, M Kudryavtsev, V https://orcid.org/0000-0002-7018-5827 Kuonen, AK Kvaratskheliya, T Lacarrere, D Lafferty, G Lai, A Lanfranchi, G Langenbruch, C Latham, T Lazzeroni, C Gac, RL Leflat, A Lefrançois, J Lefèvre, R Lemaitre, F Cid, EL Leroy, O Lesiak, T Leverington, B Li, P-R Li, T Li, Y Li, Z Likhomanenko, T Lindner, R Lionetto, F Lisovskyi, V Liu, X Loh, D Loi, A Longstaff, I Lopes, JH Lucchesi, D Martinez, ML Luo, H Lupato, A Luppi, E Lupton, O Lusiani, A Lyu, X Machefert, F Maciuc, F Macko, V Mackowiak, P Maddrell-Mander, S Maev, O Maguire, K Maisuzenko, D Majewski, MW Malde, S Malecki, B Malinin, A Maltsev, T Manca, G Mancinelli, G Marangotto, D Maratas, J Marchand, JF Marconi, U Benito, CM Marinangeli, M Marino, P Marks, J Martellotti, G Martin, M Martinelli, M Santos, DM Vidal, FM Massacrier, LM Massafferri, A Matev, R Mathad, A Mathe, Z Matteuzzi, C Mauri, A Maurice, E Maurin, B Mazurov, A McCann, M McNab, A McNulty, R Mead, JV Meadows, B Meaux, C Meier, F Meinert, N Melnychuk, D Merk, M Merli, A Michielin, E Milanes, DA Millard, E Minard, M-N Minzoni, L Mitzel, DS Mogini, A Rodriguez, JM Mombächer, T Monroy, IA Monteil, S Morandin, M Morello, MJ Morgunova, O Moron, J Morris, AB Mountain, R Muheim, F Mulder, M Müller, D Müller, J Müller, K Müller, V Naik, P Nakada, T Nandakumar, R Nandi, A Nasteva, I Needham, M Neri, N Neubert, S Neufeld, N Neuner, M Nguyen, TD Nguyen-Mau, C Nieswand, S Niet, R Nikitin, N Nikodem, T Nogay, A O'Hanlon, DP Oblakowska-Mucha, A Obraztsov, V Ogilvy, S Oldeman, R Onderwater, CJG Ossowska, A Goicochea, JMO Owen, P Oyanguren, A Pais, PR Palano, A Palutan, M Papanestis, A Pappagallo, M Pappalardo, LL Parker, W Parkes, C Passaleva, G Pastore, A Patel, M Patrignani, C Pearce, A Pellegrino, A Penso, G Altarelli, MP Perazzini, S Perret, P Pescatore, L Petridis, K Petrolini, A Petrov, A Petruzzo, M Olloqui, EP Pietrzyk, B Pikies, M Pinci, D Pisani, F Pistone, A Piucci, A Placinta, V Playfer, S Casasus, MP Polci, F Lener, MP Poluektov, A Polyakov, I Polycarpo, E Pomery, GJ Ponce, S Popov, A Popov, D Poslavskii, S Potterat, C Price, E Prisciandaro, J Prouve, C Pugatch, V Navarro, AP Pullen, H Punzi, G Qian, W Quagliani, R Quintana, B Rachwal, B Rademacker, JH Rama, M Pernas, MR Rangel, MS Raniuk, I Ratnikov, F Raven, G Salzgeber, MR Reboud, M Redi, F Reichert, S Reis, ACD Alepuz, CR Renaudin, V Ricciardi, S Richards, S Rihl, M Rinnert, K Molina, VR Robbe, P Robert, A Rodrigues, AB Rodrigues, E Lopez, JAR Rogozhnikov, A Roiser, S Rollings, A Romanovskiy, V Vidal, AR Ronayne, JW Rotondo, M Rudolph, MS Ruf, T Valls, PR Vidal, JR Silva, JJS Sadykhov, E Sagidova, N Saitta, B Guimaraes, VS Mayordomo, CS Sedes, BS Santacesaria, R Rios, CS Santimaria, M Santovetti, E Sarpis, G Sarti, A Satriano, C Satta, A Saunders, DM Savrina, D Schael, S Schellenberg, M Schiller, M Schindler, H Schmelling, M Schmelzer, T Schmidt, B Schneider, O Schopper, A Schreiner, HF Schubiger, M Schune, M-H Schwemmer, R Sciascia, B Sciubba, A Semennikov, A Sepulveda, ES Sergi, A Serra, N Serrano, J Sestini, L Seyfert, P Shapkin, M Shapoval, I Shcheglov, Y Shears, T Shekhtman, L Shevchenko, V Siddi, BG Coutinho, RS Oliveira, LSD Simi, G Simone, S Sirendi, M Skidmore, N Skwarnicki, T Smith, E Smith, IT Smith, J Smith, M Lavra, LS Sokoloff, MD Soler, FJP Paula, BSD Spaan, B Spradlin, P Sridharan, S Stagni, F Stahl, M Stahl, S Stefko, P Stefkova, S Steinkamp, O Stemmle, S Stenyakin, O Stepanova, M Stevens, H Stone, S Storaci, B Stracka, S Stramaglia, ME Straticiuc, M Straumann, U Sun, J Sun, L Sutcliffe, W Swientek, K Syropoulos, V Szumlak, T Szymanski, M T'Jampens, S Tayduganov, A Tekampe, T Tellarini, G Teubert, F Thomas, E Tilburg, JV Tilley, MJ Tisserand, V Tobin, M Tolk, S Tomassetti, L Tonelli, D Toriello, F Aoude, RTJ Tournefier, E Traill, M Tran, MT Tresch, M Trisovic, A Tsaregorodtsev, A Tsopelas, P Tully, A Tuning, N Ukleja, A Usachov, A Ustyuzhanin, A Uwer, U Vacca, C Vagner, A Vagnoni, V Valassi, A Valat, S Valenti, G Gomez, RV Regueiro, PV Vecchi, S Veghel, MV Velthuis, JJ Veltri, M Veneziano, G Venkateswaran, A Verlage, TA Vernet, M Vesterinen, M Barbosa, JVV Viaud, B Vieira, D Diaz, MV Viemann, H Vilasis-Cardona, X Vitti, M Volkov, V Vollhardt, A Voneki, B Vorobyev, A Vorobyev, V Voß, C Vries, JAD Sierra, CV Waldi, R Wallace, C Wallace, R Walsh, J Wang, J Ward, DR Wark, HM Watson, NK Websdale, D Weiden, A Weisser, C Whitehead, M Wicht, J Wilkinson, G Wilkinson, M Williams, M Williams, MP Williams, M Williams, T Wilson, FF Wimberley, J Winn, M Wishahi, J Wislicki, W Witek, M Wormser, G Wotton, SA Wraight, K Wyllie, K Xie, Y Xu, M Xu, Z Yang, Z Yang, Z Yao, Y Yin, H Yu, J Yuan, X Yushchenko, O Zarebski, KA Zavertyaev, M Zhang, L Zhang, Y Zhelezov, A Zheng, Y Zhu, X Zhukov, V Zonneveld, JB Zucchelli, S
Copyright, Publisher and Additional Information:	© 2018 The Authors. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.
Dates:	Published: 9 February 2018 Published (online): 8 February 2018
Institution:	The University of Sheffield
Academic Units:	The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield)
Depositing User:	Symplectic Sheffield
Date Deposited:	02 Mar 2018 15:48
Last Modified:	02 Mar 2018 15:48
Published Version:	https://doi.org/10.1103/PhysRevLett.120.061801
Status:	Published
Publisher:	American Physical Society
Refereed:	Yes
Identification Number:	10.1103/PhysRevLett.120.061801
Open Archives Initiative ID (OAI ID):	oai:eprints.whiterose.ac.uk:128130

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Search for dark photons produced in 13 TeV $pp$ collisions

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