Search for triple Higgs boson production in the 6b final state using pp collisions at s=13TeV with the ATLAS detector

Physical Review D American Physical Society (APS) 111:3 (2025) 32006

Authors:

G Aad, E Aakvaag, B Abbott, S Abdelhameed, K Abeling, Nj Abicht, Sh Abidi, M Aboelela, A Aboulhorma, H Abramowicz, Y Abulaiti, Bs Acharya, A Ackermann, C Adam Bourdarios, L Adamczyk, Sv Addepalli, Mj Addison, J Adelman, A Adiguzel, T Adye, Aa Affolder, Y Afik, Mn Agaras, A Aggarwal, C Agheorghiesei, F Ahmadov, S Ahuja, X Ai, G Aielli, A Aikot, M Ait Tamlihat, B Aitbenchikh, M Akbiyik, Tpa Åkesson, Av Akimov, D Akiyama, Nn Akolkar, S Aktas, Gl Alberghi, J Albert, P Albicocco, Gl Albouy, S Alderweireldt, Zl Alegria, M Aleksa, In Aleksandrov, C Alexa, T Alexopoulos, F Alfonsi, M Algren

Abstract:

<jats:p>A search for the production of three Higgs bosons (<a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mi>H</a:mi><a:mi>H</a:mi><a:mi>H</a:mi></a:math>) in the <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:mi>b</c:mi><c:mover accent="true"><c:mi>b</c:mi><c:mo stretchy="false">¯</c:mo></c:mover><c:mi>b</c:mi><c:mover accent="true"><c:mi>b</c:mi><c:mo stretchy="false">¯</c:mo></c:mover><c:mi>b</c:mi><c:mover accent="true"><c:mi>b</c:mi><c:mo stretchy="false">¯</c:mo></c:mover></c:math> final state is presented. The search uses <k:math xmlns:k="http://www.w3.org/1998/Math/MathML" display="inline"><k:mn>126</k:mn><k:mtext> </k:mtext><k:mtext> </k:mtext><k:msup><k:mi>fb</k:mi><k:mrow><k:mo>−</k:mo><k:mn>1</k:mn></k:mrow></k:msup></k:math> of proton-proton collision data at <m:math xmlns:m="http://www.w3.org/1998/Math/MathML" display="inline"><m:msqrt><m:mi>s</m:mi></m:msqrt><m:mo>=</m:mo><m:mn>13</m:mn><m:mtext> </m:mtext><m:mtext> </m:mtext><m:mi>TeV</m:mi></m:math> collected with the ATLAS detector at the Large Hadron Collider. The analysis targets both nonresonant and resonant production of <o:math xmlns:o="http://www.w3.org/1998/Math/MathML" display="inline"><o:mi>H</o:mi><o:mi>H</o:mi><o:mi>H</o:mi></o:math>. The resonant interpretations primarily consider a cascade decay topology of <q:math xmlns:q="http://www.w3.org/1998/Math/MathML" display="inline"><q:mi>X</q:mi><q:mo stretchy="false">→</q:mo><q:mi>S</q:mi><q:mi>H</q:mi><q:mo stretchy="false">→</q:mo><q:mi>H</q:mi><q:mi>H</q:mi><q:mi>H</q:mi></q:math> with masses of the new scalars <u:math xmlns:u="http://www.w3.org/1998/Math/MathML" display="inline"><u:mi>X</u:mi></u:math> and <w:math xmlns:w="http://www.w3.org/1998/Math/MathML" display="inline"><w:mi>S</w:mi></w:math> up to 1.5 and 1 TeV, respectively. In addition to scenarios where <y:math xmlns:y="http://www.w3.org/1998/Math/MathML" display="inline"><y:mi>S</y:mi></y:math> is off-shell, the nonresonant interpretation includes a search for Standard Model <ab:math xmlns:ab="http://www.w3.org/1998/Math/MathML" display="inline"><ab:mi>H</ab:mi><ab:mi>H</ab:mi><ab:mi>H</ab:mi></ab:math> production, with limits on the trilinear and quartic Higgs self-coupling set. No evidence for <cb:math xmlns:cb="http://www.w3.org/1998/Math/MathML" display="inline"><cb:mi>H</cb:mi><cb:mi>H</cb:mi><cb:mi>H</cb:mi></cb:math> production is observed. An upper limit of 59 fb is set, at the 95% confidence level, on the cross section for Standard Model <eb:math xmlns:eb="http://www.w3.org/1998/Math/MathML" display="inline"><eb:mi>H</eb:mi><eb:mi>H</eb:mi><eb:mi>H</eb:mi></eb:math> production.</jats:p> <jats:sec> <jats:title/> <jats:supplementary-material> <jats:permissions> <jats:copyright-statement>© 2025 CERN, for the ATLAS Collaboration</jats:copyright-statement> <jats:copyright-year>2025</jats:copyright-year> <jats:copyright-holder>CERN</jats:copyright-holder> </jats:permissions> </jats:supplementary-material> </jats:sec>

Search for same-charge top-quark pair production in pp collisions at s = 13 TeV with the ATLAS detector

Journal of High Energy Physics Springer 2025:2 (2025) 84

Authors:

G Aad, E Aakvaag, B Abbott, S Abdelhameed, K Abeling, NJ Abicht, SH Abidi, M Aboelela, A Aboulhorma, H Abramowicz, H Abreu, Y Abulaiti, BS Acharya, A Ackermann, C Adam Bourdarios, L Adamczyk, SV Addepalli, MJ Addison, J Adelman, A Adiguzel, T Adye, AA Affolder, Y Afik, MN Agaras

Abstract:

A search for the production of top-quark pairs with the same electric charge (tt or tt¯) is presented. The analysis uses proton-proton collision data at s = 13 TeV, recorded by the ATLAS detector at the Large Hadron Collider, corresponding to an integrated luminosity of 140 fb−1. Events with two same-charge leptons and at least two b-tagged jets are selected. Neural networks are employed to define two selections sensitive to additional couplings beyond the Standard Model that would enhance the production rate of same-sign top-quark pairs. No significant signal is observed, leading to an upper limit on the total production cross-section of same-sign top-quark pairs of 1.6 fb at 95% confidence level. Corresponding limits on the three Wilson coefficients associated with the Otu1, OQu1, and OQu8 operators in the Standard Model Effective Field Theory framework are derived.

Search for single-production of vector-like quarks decaying into Wb in the fully hadronic final state in pp collisions at s = 13 TeV with the ATLAS detector

Journal of High Energy Physics Springer 2025:2 (2025) 75

Authors:

G Aad, E Aakvaag, B Abbott, S Abdelhameed, K Abeling, NJ Abicht, SH Abidi, M Aboelela, A Aboulhorma, H Abramowicz, H Abreu, Y Abulaiti, BS Acharya, A Ackermann, C Adam Bourdarios, L Adamczyk, SV Addepalli, MJ Addison, J Adelman, A Adiguzel, T Adye, AA Affolder, Y Afik, MN Agaras

Abstract:

A search for T and Y vector-like quarks produced in proton-proton collisions at a centre-of-mass energy of 13 TeV and decaying into Wb in the fully hadronic final state is presented. The search uses 139 fb−1 of data collected by the ATLAS detector at the LHC from 2015 to 2018. The final state is characterised by a hadronically decaying W boson with large Lorentz boost and a b-tagged jet, which are used to reconstruct the invariant mass of the vector-like quark candidate. The main background is QCD multijet production, which is estimated using a data-driven method. Upon finding no significant excess in data, mass limits at 95% confidence level are obtained as a function of the global coupling parameter, κ. The observed lower limits on the masses of Y quarks with κ = 0.5 and κ = 0.7 are 2.0 TeV and 2.4 TeV, respectively. For T quarks, the observed mass limits are 1.4 TeV for κ = 0.5 and 1.9 TeV for κ = 0.7.

Search for the associated production of charm quarks and a Higgs boson decaying into a photon pair with the ATLAS detector

Journal of High Energy Physics Springer 2025:2 (2025) 45

Authors:

G Aad, E Aakvaag, B Abbott, S Abdelhameed, K Abeling, NJ Abicht, SH Abidi, M Aboelela, A Aboulhorma, H Abramowicz, H Abreu, Y Abulaiti, BS Acharya, A Ackermann, C Adam Bourdarios, L Adamczyk, SV Addepalli, MJ Addison, J Adelman, A Adiguzel, T Adye, AA Affolder, Y Afik, MN Agaras

Abstract:

A search for the production of a Higgs boson and one or more charm quarks, in which the Higgs boson decays into a photon pair, is presented. This search uses proton-proton collision data with a centre-of-mass energy of s = 13 TeV and an integrated luminosity of 140 fb−1 recorded by the ATLAS detector at the Large Hadron Collider. The analysis relies on the identification of charm-quark-containing jets, and adopts an approach based on Gaussian process regression to model the non-resonant di-photon background. The observed (expected, assuming the Standard Model signal) upper limit at the 95% confidence level on the cross-section for producing a Higgs boson and at least one charm-quark-containing jet that passes a fiducial selection is found to be 10.6 pb (8.8 pb). The observed (expected) measured cross-section for this process is 5.3 ± 3.2 pb (2.9 ± 3.1 pb).

Neutrino Interaction Vertex Reconstruction in DUNE with Pandora Deep Learning

(2025)

Authors:

DUNE Collaboration, A Abed Abud, R Acciarri, MA Acero, MR Adames, G Adamov, M Adamowski, D Adams, M Adinolfi, C Adriano, A Aduszkiewicz, J Aguilar, F Akbar, F Alemanno, NS Alex, K Allison, M Alrashed, A Alton, R Alvarez, T Alves, A Aman, H Amar, P Amedo, J Anderson, C Andreopoulos, M Andreotti, MP Andrews, F Andrianala, S Andringa, F Anjarazafy, D Antic, M Antoniassi, M Antonova, A Aranda-Fernandez, L Arellano, E Arrieta Diaz, MA Arroyave, J Asaadi, A Ashkenazi, D Asner, L Asquith, E Atkin, D Auguste, A Aurisano, V Aushev, D Autiero, D Ávila Gómez, MB Azam, F Azfar, A Back, H Back, JJ Back, I Bagaturia, L Bagby, D Baigarashev, S Balasubramanian, A Balboni, P Baldi, W Baldini, J Baldonedo, B Baller, B Bambah, R Banerjee, F Barao, D Barbu, G Barenboim, P Barham Alzás, GJ Barker, W Barkhouse, G Barr, J Barranco Monarca, A Barros, N Barros, D Barrow, JL Barrow, A Basharina-Freshville, A Bashyal, V Basque, D Basu, C Batchelor, L Bathe-Peters, JBR Battat, F Battisti, F Bay, MCQ Bazetto, JLL Bazo Alba, JF Beacom, E Bechetoille, B Behera, E Belchior, B Bell, G Bell, L Bellantoni, G Bellettini, V Bellini, O Beltramello, C Benitez Montiel, D Benjamin, F Bento Neves, J Berger, S Berkman, J Bernal, P Bernardini, A Bersani, E Bertolini, S Bertolucci, M Betancourt, A Betancur Rodríguez, Y Bezawada, AT Bezerra, A Bhat, V Bhatnagar, J Bhatt, M Bhattacharjee, M Bhattacharya, S Bhuller, B Bhuyan, S Biagi, J Bian, K Biery, B Bilki, M Bishai, A Blake, FD Blaszczyk, GC Blazey, E Blucher, B Bogart, J Bogenschuetz, J Boissevain, S Bolognesi, T Bolton, L Bomben, M Bonesini, C Bonilla-Diaz, A Booth, F Boran, R Borges Merlo, N Bostan, G Botogoske, B Bottino, R Bouet, J Boza, J Bracinik, B Brahma, D Brailsford, F Bramati, A Branca, A Brandt, J Bremer, C Brew, SJ Brice, V Brio, C Brizzolari, C Bromberg, J Brooke, A Bross, G Brunetti, MB Brunetti, N Buchanan, H Budd, J Buergi, A Bundock, D Burgardt, S Butchart, G Caceres V., T Cai, R Calabrese, R Calabrese, J Calcutt, L Calivers, E Calvo, A Caminata, AF Camino, W Campanelli, A Campani, A Campos Benitez, N Canci, J Capó, I Caracas, D Caratelli, D Carber, JM Carceller, G Carini, B Carlus, MF Carneiro, P Carniti, I Caro Terrazas, H Carranza, N Carrara, L Carroll, T Carroll, A Carter, E Casarejos, D Casazza, JF Castaño Forero, FA Castaño, A Castillo, C Castromonte, E Catano-Mur, C Cattadori, F Cavalier, F Cavanna, S Centro, G Cerati, C Cerna, A Cervelli, A Cervera Villanueva, M Chalifour, A Chappell, A Chatterjee, B Chauhan, H Chen, M Chen, WC Chen, Y Chen, Z Chen, D Cherdack, SS Chhibra, C Chi, F Chiapponi, R Chirco, N Chitirasreemadam, K Cho, S Choate, G Choi, D Chokheli, PS Chong, B Chowdhury, D Christian, M Chung, E Church, MF Cicala, M Cicerchia, V Cicero, R Ciolini, P Clarke, G Cline, AG Cocco, JAB Coelho, A Cohen, J Collazo, J Collot, JM Conrad, M Convery, K Conway, S Copello, P Cova, C Cox, L Cremonesi, JI Crespo-Anadón, M Crisler, E Cristaldo, J Crnkovic, G Crone, R Cross, A Cudd, C Cuesta, Y Cui, F Curciarello, D Cussans, J Dai, O Dalager, W Dallaway, R D'Amico, H da Motta, ZA Dar, R Darby, L Da Silva Peres, Q David, GS Davies, S Davini, J Dawson, R De Aguiar, P De Almeida, P Debbins, MP Decowski, A de Gouvêa, PC De Holanda, P De Jong, P Del Amo Sanchez, G De Lauretis, A Delbart, D Delepine, M Delgado, A Dell'Acqua, G Delle Monache, N Delmonte, P De Lurgio, R Demario, G De Matteis, JRT de Mello Neto, DM DeMuth, S Dennis, C Densham, P Denton, GW Deptuch, A De Roeck, V De Romeri, JP Detje, J Devine, R Dharmapalan, M Dias, A Diaz, JS Díaz, F Díaz, F Di Capua, A Di Domenico, S Di Domizio, S Di Falco, L Di Giulio, P Ding, L Di Noto, E Diociaiuti, V Di Silvestre, C Distefano, R Diurba, M Diwan, Z Djurcic, S Dolan, M Dolce, F Dolek, MJ Dolinski, D Domenici, S Donati, Y Donon, S Doran, D Douglas, TA Doyle, F Drielsma, L Duarte, D Duchesneau, K Duffy, K Dugas, P Dunne, B Dutta, H Duyang, DA Dwyer, AS Dyshkant, S Dytman, M Eads, A Earle, S Edayath, D Edmunds, J Eisch, W Emark, P Englezos, A Ereditato, T Erjavec, CO Escobar, JJ Evans, E Ewart, AC Ezeribe, K Fahey, A Falcone, M Fani', C Farnese, S Farrell, Y Farzan, J Felix, Y Feng, E Fernandez-Martinez, M Ferreira da Silva, G Ferry, E Fialova, L Fields, P Filip, A Filkins, F Filthaut, G Fiorillo, M Fiorini, S Fogarty, W Foreman, J Fowler, J Franc, K Francis, D Franco, J Franklin, J Freeman, J Fried, A Friedland, M Fucci, S Fuess, IK Furic, K Furman, AP Furmanski, R Gaba, A Gabrielli, AM Gago, F Galizzi, H Gallagher, M Galli, N Gallice, V Galymov, E Gamberini, T Gamble, R Gandhi, S Ganguly, F Gao, S Gao, D Garcia-Gamez, MÁ García-Peris, F Gardim, S Gardiner, D Gastler, A Gauch, P Gauzzi, S Gazzana, G Ge, N Geffroy, B Gelli, S Gent, L Gerlach, A Ghosh, T Giammaria, D Gibin, I Gil-Botella, S Gilligan, A Gioiosa, S Giovannella, AK Giri, C Giugliano, V Giusti, D Gnani, O Gogota, S Gollapinni, K Gollwitzer, RA Gomes, LV Gomez Bermeo, LS Gomez Fajardo, D Gonzalez-Diaz, MC Goodman, S Goswami, C Gotti, J Goudeau, E Goudzovski, C Grace, E Gramellini, R Gran, E Granados, P Granger, C Grant, DR Gratieri, G Grauso, P Green, S Greenberg, J Greer, WC Griffith, K Grzelak, L Gu, W Gu, V Guarino, M Guarise, R Guenette, M Guerzoni, D Guffanti, A Guglielmi, B Guo, FY Guo, V Gupta, G Gurung, D Gutierrez, P Guzowski, MM Guzzo, S Gwon, A Habig, L Haegel, L Hagaman, A Hahn, J Hakenmüller, T Hamernik, P Hamilton, J Hancock, M Handley, F Happacher, DA Harris, AL Hart, J Hartnell, T Hartnett, J Harton, T Hasegawa, CM Hasnip, R Hatcher, S Hawkins, J Hays, M He, A Heavey, KM Heeger, A Heindel, J Heise, P Hellmuth, L Henderson, K Herner, V Hewes, A Higuera, C Hilgenberg, A Himmel, E Hinkle, LR Hirsch, J Ho, J Hoefken Zink, J Hoff, A Holin, T Holvey, C Hong, E Hoppe, S Horiuchi, GA Horton-Smith, R Hosokawa, T Houdy, B Howard, R Howell, I Hristova, MS Hronek, J Huang, RG Huang, X Huang, Z Hulcher, G Iles, N Ilic, AM Iliescu, R Illingworth, G Ingratta, A Ioannisian, B Irwin, M Ismerio Oliveira, CM Jackson, V Jain, E James, W Jang, B Jargowsky, D Jena, I Jentz, X Ji, C Jiang, J Jiang, A Jipa, JH Jo, FR Joaquim, W Johnson, C Jollet, R Jones, N Jovancevic, M Judah, CK Jung, KY Jung, T Junk, Y Jwa, M Kabirnezhad, AC Kaboth, I Kadenko, O Kalikulov, D Kalra, M Kandemir, DM Kaplan, G Karagiorgi, G Karaman, A Karcher, Y Karyotakis, SP Kasetti, L Kashur, A Kauther, N Kazaryan, L Ke, E Kearns, PT Keener, KJ Kelly, R Keloth, E Kemp, O Kemularia, Y Kermaidic, W Ketchum, SH Kettell, N Khan, A Khvedelidze, D Kim, J Kim, MJ Kim, S Kim, B King, M King, M Kirby, A Kish, J Klein, J Kleykamp, A Klustova, T Kobilarcik, L Koch, K Koehler, LW Koerner, DH Koh, M Kordosky, T Kosc, VA Kostelecký, K Kothekar, I Kotler, M Kovalcuk, W Krah, R Kralik, M Kramer, L Kreczko, F Krennrich, T Kroupova, S Kubota, M Kubu, VA Kudryavtsev, G Kufatty, S Kuhlmann, J Kumar, P Kumar, P Kumar, S Kumaran, J Kunzmann, R Kuravi, V Kus, T Kutter, J Kvasnicka, T Labree, T Lackey, I Lalău, A Lambert, BJ Land, CE Lane, N Lane, K Lang, T Langford, M Langstaff, F Lanni, J Larkin, P Lasorak, D Last, A Laundrie, G Laurenti, E Lavaut, P Laycock, I Lazanu, R LaZur, M Lazzaroni, T Le, S Leardini, J Learned, T LeCompte, G Lehmann Miotto, R Lehnert, M Leitner, H Lemoine, D Leon Silverio, LM Lepin, J-Y Li, SW Li, Y Li, H Liao, R Lima, CS Lin, D Lindebaum, S Linden, RA Lineros, A Lister, BR Littlejohn, H Liu, J Liu, Y Liu, S Lockwitz, I Lomidze, K Long, TV Lopes, J Lopez, I López de Rego, N López-March, JM LoSecco, WC Louis, A Lozano Sanchez, X-G Lu, KB Luk, X Luo, E Luppi, AA Machado, P Machado, CT Macias, JR Macier, M MacMahon, S Magill, C Magueur, K Mahn, A Maio, A Major, K Majumdar, A Malige, S Mameli, M Man, RC Mandujano, J Maneira, S Manly, A Mann, K Manolopoulos, M Manrique Plata, S Manthey Corchado, VN Manyam, L Manzanillas-Velez, M Marchan, A Marchionni, W Marciano, D Marfatia, C Mariani, J Maricic, F Marinho, AD Marino, T Markiewicz, F Das Chagas Marques, C Marquet, M Marshak, CM Marshall, J Marshall, L Martina, J Martín-Albo, N Martinez, DA Martinez Caicedo, M Martinez-Casales, F Martínez López, P Martínez Miravé, S Martynenko, V Mascagna, A Mastbaum, M Masud, F Matichard, G Matteucci, J Matthews, C Mauger, N Mauri, K Mavrokoridis, I Mawby, F Mayhew, R Mazza, T McAskill, N McConkey, KS McFarland, C McGrew, A McNab, C McNulty, L Meazza, VCN Meddage, M Mehmood, B Mehta, P Mehta, F Mei, P Melas, L Mellet, O Mena, H Mendez, DP Méndez, AP Mendonca, A Menegolli, G Meng, ACEA Mercuri, A Meregaglia, MD Messier, S Metallo, W Metcalf, M Mewes, H Meyer, T Miao, J Micallef, A Miccoli, G Michna, R Milincic, F Miller, G Miller, W Miller, A Minotti, L Miralles, C Mironov, S Miryala, S Miscetti, CS Mishra, P Mishra, SR Mishra, A Mislivec, D Mladenov, I Mocioiu, A Mogan, R Mohanta, TA Mohayai, N Mokhov, J Molina, L Molina Bueno, E Montagna, A Montanari, C Montanari, D Montanari, D Montanino, LM Montaño Zetina, M Mooney, AF Moor, M Moore, Z Moore, D Moreno, G Moreno-Granados, O Moreno-Palacios, L Morescalchi, R Moretti, C Morris, C Mossey, CA Moura, G Mouster, W Mu, L Mualem, J Mueller, M Muether, F Muheim, A Muir, Y Mukhamejanov, A Mukhamejanova, M Mulhearn, D Munford, LJ Munteanu, H Muramatsu, J Muraz, M Murphy, T Murphy, J Muse, A Mytilinaki, J Nachtman, Y Nagai, S Nagu, D Naples, S Narita, J Nava, A Navrer-Agasson, N Nayak, M Nebot-Guinot, A Nehm, JK Nelson, O Neogi, J Nesbit, M Nessi, D Newbold, M Newcomer, R Nichol, F Nicolas-Arnaldos, A Nielsen, A Nikolica, J Nikolov, E Niner, K Nishimura, A Norman, A Norrick, P Novella, A Nowak, JA Nowak, M Oberling, JP Ochoa-Ricoux, S Oh, SB Oh, A Olivier, T Olson, Y Onel, Y Onishchuk, A Oranday, M Osbiston, JA Osorio Vélez, L O'Sullivan, L Otiniano Ormachea, L Pagani, G Palacio, O Palamara, S Palestini, JM Paley, M Pallavicini, C Palomares, S Pan, M Panareo, P Panda, V Pandey, W Panduro Vazquez, E Pantic, V Paolone, A Papadopoulou, R Papaleo, D Papoulias, S Paramesvaran, S Parke, S Parsa, Z Parsa, S Parveen, M Parvu, D Pasciuto, S Pascoli, L Pasqualini, J Pasternak, G Patiño Camargo, JL Paton, C Patrick, L Patrizii, RB Patterson, T Patzak, A Paudel, J Paul, L Paulucci, Z Pavlovic, G Pawloski, D Payne, A Peake, V Pec, E Pedreschi, SJM Peeters, W Pellico, E Pennacchio, A Penzo, OLG Peres, YF Perez Gonzalez, L Pérez-Molina, C Pernas, J Perry, D Pershey, G Pessina, G Petrillo, C Petta, R Petti, M Pfaff, V Pia, L Pickering, L Pierini, F Pietropaolo, VL Pimentel, G Pinaroli, S Pincha, J Pinchault, K Pitts, K Pletcher, K Plows, C Pollack, T Pollmann, F Pompa, X Pons, N Poonthottathil, V Popov, F Poppi, J Porter, LG Porto Paixão, M Potekhin, M Pozzato, R Pradhan, T Prakash, M Prest, F Psihas, D Pugnere, D Pullia, X Qian, J Queen, JL Raaf, M Rabelhofer, V Radeka, J Rademacker, B Radics, F Raffaelli, A Rafique, E Raguzin, A Rahe, S Rajagopalan, M Rajaoalisoa, I Rakhno, L Rakotondravohitra, MA Ralaikoto, L Ralte, MA Ramirez Delgado, B Ramson, SS Randriamanampisoa, A Rappoldi, G Raselli, T Rath, P Ratoff, R Ray, H Razafinime, RF Razakamiandra, EM Rea, JS Real, B 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