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Aaij, R, Abdelmotteleb, ASW, Abellan Beteta, C, Abudinén, F, Ackernley, T, Adeva, B, Adinolfi, M, Adlarson, P, Afsharnia, H, Agapopoulou, C et al (show 1091 more authors) , Aidala, CA, Ajaltouni, Z, Akar, S, Akiba, K, Albicocco, P, Albrecht, J, Alessio, F, Alexander, M, Alfonso Albero, A, Aliouche, Z, Alvarez Cartelle, P, Amalric, R, Amato, S, Amey, JL, Amhis, Y, An, L, Anderlini, L, Andersson, M, Andreianov, A, Andreola, P, Andreotti, M, Andreou, D, Anelli, A, Ao, D, Archilli, F, Arguedas Cuendis, S, Artamonov, A, Artuso, M, Aslanides, E, Atzeni, M, Audurier, B, Bacher, D, Bachiller Perea, I, Bachmann, S, Bachmayer, M, Back, JJ, Bailly-reyre, A, Baladron Rodriguez, P, Balagura, V, Baldini, W, Baptista de Souza Leite, J, Barbetti, M, Barbosa, IR, 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, Belin, S, Bellee, V, Belous, K, Belov, I, Belyaev, I, Benane, G, Bencivenni, G, Ben-Haim, E, Berezhnoy, A, Bernet, R, Bernet Andres, S, Bernstein, HC, Bertella, C, Bertolin, A, Betancourt, C, Betti, F, Bex, J, Bezshyiko, Ia, Bhom, J, 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, Bocharnikov, V, Boelhauve, JA, Boente Garcia, O, Boettcher, T, Bohare, A, 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, Brea Rodriguez, A, Breer, N, Brodzicka, J, Brossa Gonzalo, A, Brown, J, Brundu, D, Buonaura, A, Buonincontri, L, Burke, AT 
ORCID: 0000-0003-0243-0517, Burr, C, Bursche, A, Butkevich, A, Butter, JS, Buytaert, J, Byczynski, W, Cadeddu, S, Cai, H, Calabrese, R, Calefice, L, Cali, S, Calvi, M, Calvo Gomez, M, Cambon Bouzas, J, Campana, P, Campora Perez, DH, Campoverde Quezada, AF, Capelli, S, Capriotti, L, Carbone, A, Carcedo Salgado, L, Cardinale, R, Cardini, A, Carniti, P, Carus, L, Casais Vidal, A, Caspary, R, Casse, G ORCID: 0000-0002-8516-237X, Castro Godinez, J, Cattaneo, M, Cavallero, G, Cavallini, V, Celani, S, Cerasoli, J, Cervenkov, D, Cesare, S, Chadwick, AJ, Chahrour, I, Charles, M, Charpentier, Ph, Chavez Barajas, CA, Chefdeville, M, Chen, C, Chen, S, Chernov, A, Chernyshenko, S, Chobanova, V, Cholak, S, Chrzaszcz, M, Chubykin, A, Chulikov, V, Ciambrone, P, Cicala, MF, Cid Vidal, X, Ciezarek, G, Cifra, P, Clarke, PEL, Clemencic, M, Cliff, HV, Closier, J, Cobbledick, JL, Cocha Toapaxi, C, Coco, V, Cogan, J, Cogneras, E, Cojocariu, L, Collins, P, Colombo, T, Comerma-Montells, A, Congedo, L, Contu, A, Cooke, N, Corredoira, I, Correia, A, Corti, G, Cottee Meldrum, JJ, Couturier, B, Craik, DC, Cruz Torres, M, 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, Davidson, A, Davies, JE, Davis, A, De Aguiar Francisco, O, De Angelis, C, de Boer, J, De Bruyn, K, De Capua, S, De Cian, M, De Freitas Carneiro Da Graca, U, De Lucia, E, De Miranda, JM, De Paula, L, De Serio, M, De Simone, D, De Simone, P, De Vellis, F, de Vries, JA, Debernardis, F, Decamp, D, Dedu, V, Del Buono, L, Delaney, B, Dembinski, H-P, Deng, J, Denysenko, V, Deschamps, O, Dettori, F, Dey, B, Di Nezza, P, Diachkov, I, Didenko, S, Ding, S, Dobishuk, V, Docheva, AD, Dolmatov, A, Dong, C, Donohoe, AM, Dordei, F, dos Reis, AC, Douglas, L, Downes, AG, Duan, W, Duda, P, Dudek, MW, Dufour, L, Duk, V, Durante, P, Duras, MM, Durham, JM, Dutta, D, Dziurda, A, Dzyuba, A, Easo, S, Eckstein, E, Egede, U, Egorychev, A, Egorychev, V, Eirea Orro, C, Eisenhardt, S, Ejopu, E, Ek-In, S, Eklund, L, Elashri, M, 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, Farmer, K, Fazzini, D, Felkowski, L, Feng, M, Feo, M, Fernandez Gomez, M, Fernez, AD, Ferrari, F, Ferreira Rodrigues, F, Ferreres Sole, S, 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, Foreman, LF, Forty, R, Foulds-Holt, D, Franco Sevilla, M, Frank, M, Franzoso, E, Frau, G, Frei, C, Friday, DA, Frontini, L, Fu, J, Fuehring, Q, Fujii, Y, Fulghesu, T, Gabriel, E, Galati, G, Galati, MD, Gallas Torreira, A, Galli, D, Gambetta, S, Gandelman, M, Gandini, P, Gao, H, Gao, R, Gao, Y, Gao, Y, Gao, Y, Garau, M, Garcia Martin, LM, Garcia Moreno, P, García Pardiñas, J, Garcia Plana, B, Garg, KG, Garrido, L, Gaspar, C, Geertsema, RE, Gerken, LL, Gersabeck, E, Gersabeck, M, Gershon, T, Ghorbanimoghaddam, Z, Giambastiani, L, Giasemis, FI, Gibson, V, Giemza, HK, Gilman, AL, Giovannetti, M, Gioventù, A, Gironella Gironell, P, Giugliano, C, Giza, MA, Gkougkousis, EL, Glaser, FC, Gligorov, VV, Göbel, C, Golobardes, E, Golubkov, D, Golutvin, A, Gomes, A, Gomez Fernandez, S, Goncalves Abrantes, F, Goncerz, M, Gong, G, Gooding, JA, Gorelov, IV, Gotti, C, Grabowski, JP, Granado Cardoso, LA, Graugés, E, Graverini, E, Grazette, L, Graziani, G, Grecu, AT, Greeven, LM, Grieser, NA, Grillo, L, Gromov, S, Gu, C, Guarise, M, Guittiere, M, Guliaeva, V, Günther, PA, Guseinov, A-K, Gushchin, E, Guz, Y, Gys, T, Hadavizadeh, T, Hadjivasiliou, C, Haefeli, G, Haen, C, Haimberger, J, Hajheidari, M, Halewood-leagas, T, Halvorsen, MM, Hamilton, PM, Hammerich, J ORCID: 0000-0002-5556-1775, Han, Q, Han, X, Hansmann-Menzemer, S, Hao, L, Harnew, N, Harrison, T, Hartmann, M, Hasse, C, He, J, Heijhoff, K, Hemmer, F, Henderson, C, Henderson, RDL, Hennequin, AM, Hennessy, K, Henry, L, Herd, J, Heuel, J, Hicheur, A, Hill, D, Hollitt, SE, Horswill, J, Hou, R, Hou, Y, Howarth, N, Hu, J, Hu, J, Hu, W, Hu, X, Huang, W, Hulsbergen, W, Hunter, RJ, Hushchyn, M, Hutchcroft, D ORCID: 0000-0002-4174-6509, Idzik, M, Ilin, D, Ilten, P, Inglessi, A, Iniukhin, A, Ishteev, A, Ivshin, K, Jacobsson, R, Jage, H, Jaimes Elles, SJ, Jakobsen, S, Jans, E, Jashal, BK, Jawahery, A, Jevtic, V, Jiang, E, Jiang, X, Jiang, Y, Jiang, YJ, John, M, Johnson, D, Jones, CR, Jones, TP, Joshi, S, Jost, B, Jurik, N, Juszczak, I, Kaminaris, D, Kandybei, S, Kang, Y, Karacson, M, Karpenkov, D, Karpov, M, Kauniskangas, AM, 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, Konoplyannikov, A, Kopciewicz, P, Koppenburg, P, Korolev, M, Kostiuk, I, Kot, O, Kotriakhova, S, Kozachuk, A, Kravchenko, P, Kravchuk, L, Kreps, M, Kretzschmar, S, Krokovny, P, Krupa, W, Krzemien, W, Kubat, J, Kubis, S, Kucewicz, W, Kucharczyk, M, Kudryavtsev, V, Kulikova, E, Kupsc, A, Kutsenko, BK, Lacarrere, D, Lafferty, G, Lai, A, Lampis, A, Lancierini, D, Landesa Gomez, C, Lane, JJ, Lane, R, Langenbruch, C, Langer, J, Lantwin, O, Latham, T, Lazzari, F, Lazzeroni, C, Le Gac, R, Lee, SH, Lefèvre, R, Leflat, A, Legotin, S, Lehuraux, M, Leroy, O, Lesiak, T, Leverington, B, Li, A, Li, H, Li, K, Li, L, Li, P, Li, P-R, Li, S, Li, T, Li, T, Li, Y, Li, Y, Li, Z, Lian, Z, Liang, X, Lin, C, Lin, T, Lindner, R, Lisovskyi, V, Litvinov, R, Liu, G, Liu, H, Liu, K, Liu, Q, Liu, S, Liu, Y, Liu, Y, Liu, YL, Lobo Salvia, A, Loi, A, Lomba Castro, J, Long, T, Lopes, JH, Lopez Huertas, A, López Soliño, S, Lovell, GH, Lucarelli, C, Lucchesi, D, Luchuk, S, Lucio Martinez, M, Lukashenko, V, Luo, Y, Lupato, A, Luppi, E, Lynch, K, Lyu, X-R, Ma, GM, Ma, R, Maccolini, S, Machefert, F, Maciuc, F, Mackay, I, Madhan Mohan, LR, Madurai, MM, Maevskiy, A, Magdalinski, D, Maisuzenko, D, Majewski, MW, Malczewski, JJ, Malde, S, Malecki, B, Malentacca, L, Malinin, A, Maltsev, T, Manca, G, Mancinelli, G, Mancuso, C, Manera Escalero, R, Manuzzi, D, Marangotto, D, Marchand, JF, Marchevski, R, Marconi, U, Mariani, S, Marin Benito, C, Marks, J, Marshall, AM, Marshall, PJ, Martelli, G, Martellotti, G, Martinazzoli, L, Martinelli, M, Martinez Santos, D, Martinez Vidal, F, 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, Meadows, B, Meier, G, Melnychuk, D, Merk, M, Merli, A, Meyer Garcia, L, Miao, D, Miao, H, Mikhasenko, M, Milanes, DA, Minotti, A, Minucci, E, Miralles, T, Mitchell, SE, Mitreska, B, Mitzel, DS, Modak, A, Mödden, A, Mohammed, RA, Moise, RD, Mokhnenko, S, Mombächer, T, Monk, M, Monroy, IA, Monteil, S, Morcillo Gomez, A, Morello, G, Morello, MJ, Morgenthaler, MP, Moron, J, Morris, AB, Morris, AG, Mountain, R, Mu, H, Mu, ZM, Muhammad, E, Muheim, F, Mulder, M, Müller, K, Mũnoz-Rojas, F, Murta, R, 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, Nikitin, N, Nogga, P, Nolte, NS, Normand, C, Novoa Fernandez, J, Nowak, G, Nunez, C, Nur, HN, Oblakowska-Mucha, A, Obraztsov, V, Oeser, T, Okamura, S, Oldeman, R, Oliva, F, Olocco, M, Onderwater, CJG, O’Neil, RH, Otalora Goicochea, JM, Ovsiannikova, T, Owen, P, Oyanguren, A, Ozcelik, O, Padeken, KO, Pagare, B, Pais, PR, Pajero, T, Palano, A, Palutan, M, Panshin, G, Paolucci, L, Papanestis, A, Pappagallo, M, Pappalardo, LL, Pappenheimer, C, Parkes, C, Passalacqua, B, Passaleva, G, Passaro, D, Pastore, A, Patel, M, Patoc, J, Patrignani, C, Pawley, CJ, Pellegrino, A, Pepe Altarelli, M, Perazzini, S, Pereima, D, Pereiro Castro, A, Perret, P, Perro, A, Petridis, K, Petrolini, A, Petrucci, S, Pham, H, Pica, L, Piccini, M, Pietrzyk, B, Pietrzyk, G, Pinci, D, Pisani, F, Pizzichemi, M, Placinta, V, Plo Casasus, M, Polci, F, Poli Lener, M, 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, Qi, HR, Qian, W, Qin, N, Qu, S, Quagliani, R, Rachwal, B, Rademacker, JH, Rama, M, Ramírez García, M, Ramos Pernas, M, Rangel, MS, Ratnikov, F, Raven, G, Rebollo De Miguel, M, Redi, F, Reich, J, Reiss, F, Ren, Z, Resmi, PK, Ribatti, R, Ricart, GR, Riccardi, D, Ricciardi, S, Richardson, K, Richardson-Slipper, M, Rinnert, K, Robbe, P, Robertson, G, Rodrigues, E, Rodriguez Fernandez, E, Rodriguez Lopez, JA, Rodriguez Rodriguez, E, Rogovskiy, A, Rolf, DL, Rollings, A, Roloff, P, Romanovskiy, V, Romero Lamas, M, Romero Vidal, A, Romolini, G, Ronchetti, F, Rotondo, M, Roy, SR, Rudolph, MS, Ruf, T, Ruiz Diaz, M, Ruiz Fernandez, RA, Ruiz Vidal, J, Ryzhikov, A, Ryzka, J, Saborido Silva, JJ, Sadek, R, Sagidova, N, Sahoo, N, Saitta, B, Salomoni, M, Sanchez Gras, C, Sanderswood, I, Santacesaria, R, Santamarina Rios, C, Santimaria, M, Santoro, L, Santovetti, E, Saputi, A, Saranin, D, Sarpis, G, Sarpis, M, Sarti, A, Satriano, C, Satta, A, Saur, M, Savrina, D, Sazak, H, Scantlebury Smead, LG, Scarabotto, A, Schael, S, Scherl, S ORCID: 0000-0003-0528-2724, Schertz, AM, Schiller, M, Schindler, H, Schmelling, M, Schmidt, B, Schmitt, S, Schmitz, H, Schneider, O, Schopper, A, Schulte, N, Schulte, S, Schune, MH, Schwemmer, R, Schwering, G, Sciascia, B, Sciuccati, A, Sellam, S, Semennikov, A, Senghi Soares, M, Sergi, A, Serra, N, Sestini, L, Seuthe, A, Shang, Y, Shangase, DM, Shapkin, M, Shchemerov, I, Shchutska, L, Shears, T ORCID: 0000-0002-2653-1366, Shekhtman, L, Shen, Z, Sheng, S, Shevchenko, V, Shi, B, Shields, EB, Shimizu, Y, Shmanin, E, Shorkin, R, Shupperd, JD, Silva Coutinho, R, Simi, G, Simone, S, Skidmore, N, Skuza, R, Skwarnicki, T, Slater, MW, Smallwood, JC, Smith, E, Smith, K, Smith, M, Snoch, A, Soares Lavra, L, 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(2024)
Measurement of J/ψ-pair production in pp collisions at $$ \sqrt{s} $$ = 13 TeV and study of gluon transverse-momentum dependent PDFs.
Journal of High Energy Physics, 2024 (3).
88-.
ISSN 1126-6708, 1029-8479
Access the full-text of this item by clicking on the
Open Access link.
Abstract
<jats:title>A<jats:sc>bstract</jats:sc>
</jats:title>
<jats:p>The production cross-section of <jats:italic>J/ψ</jats:italic> pairs in proton-proton collisions at a centre-of-mass energy of <jats:inline-formula>
<jats:alternatives>
<jats:tex-math>$$ \sqrt{s} $$</jats:tex-math>
<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">
<mml:msqrt>
<mml:mi>s</mml:mi>
</mml:msqrt>
</mml:math>
</jats:alternatives>
</jats:inline-formula> = 13 TeV is measured using a data sample corresponding to an integrated luminosity of 4<jats:italic>.</jats:italic>2 fb<jats:sup>
<jats:italic>−</jats:italic>1</jats:sup> collected by the LHCb experiment. The measurement is performed with both <jats:italic>J/ψ</jats:italic> mesons in the transverse momentum range 0 <jats:italic>< p</jats:italic>
<jats:sub>T</jats:sub>
<jats:italic><</jats:italic> 14 GeV/<jats:italic>c</jats:italic> and rapidity range 2<jats:italic>.</jats:italic>0 <jats:italic>< y <</jats:italic> 4<jats:italic>.</jats:italic>5. The cross-section of this process is measured to be 16<jats:italic>.</jats:italic>36 ± 0<jats:italic>.</jats:italic>28 (stat) ± 0<jats:italic>.</jats:italic>88 (syst) nb. The contributions from single-parton scattering and double-parton scattering are separated based on the dependence of the cross-section on the absolute rapidity difference ∆<jats:italic>y</jats:italic> between the two <jats:italic>J/ψ</jats:italic> mesons. The effective cross-section of double-parton scattering is measured to be <jats:italic>σ</jats:italic>
<jats:sub>eff</jats:sub> = 13<jats:italic>.</jats:italic>1 <jats:italic>±</jats:italic> 1<jats:italic>.</jats:italic>8 (stat) <jats:italic>±</jats:italic> 2<jats:italic>.</jats:italic>3 (syst) mb. The distribution of the azimuthal angle <jats:italic>ϕ</jats:italic>
<jats:sub>CS</jats:sub> of one of the <jats:italic>J/ψ</jats:italic> mesons in the Collins-Soper frame and the <jats:italic>p</jats:italic>
<jats:sub>T</jats:sub>-spectrum of the <jats:italic>J/ψ</jats:italic> pairs are also measured for the study of the gluon transverse-momentum dependent distributions inside protons. The extracted values of ⟨cos 2<jats:italic>ϕ</jats:italic>
<jats:sub>CS</jats:sub>⟩ and ⟨cos 4<jats:italic>ϕ</jats:italic>
<jats:sub>CS</jats:sub>⟩ are consistent with zero, but the presence of azimuthal asymmetry at a few percent level is allowed.</jats:p>
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