학술논문

Measurement of differential $b\bar{b}$- and $c\bar{c}$-dijet cross-sections in the forward region of $pp$ collisions at $\sqrt{s}=13 ~ \mathrm{TeV}$
Document Type
Working Paper
Author
LHCb collaborationAaij, R.Beteta, C. AbellánAckernley, T.Adeva, B.Adinolfi, M.Afsharnia, H.Aidala, C. A.Aiola, S.Ajaltouni, Z.Akar, S.Albrecht, J.Alessio, F.Alexander, M.Albero, A. AlfonsoAliouche, Z.Alkhazov, G.Cartelle, P. AlvarezAmato, 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. J.Baker, S.Rodriguez, P. BaladronBalagura, V.Baldini, W.Leite, J. BaptistaBarlow, R. J.Barsuk, S.Barter, W.Bartolini, M.Baryshnikov, F.Basels, J. M.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. C.Bertella, C.Bertholet, E.Bertolin, A.Betancourt, C.Betti, F.Bettler, M. O.Bezshyiko, Ia.Bhasin, S.Bhom, J.Bian, L.Bieker, M. S.Bifani, S.Billoir, P.Birch, M.Bishop, F. C. R.Bizzeti, A.Bjørn, M.Blago, M. P.Blake, T.Blanc, F.Blusk, S.Bobulska, D.Bocci, V.Boelhauve, J. A.Garcia, O. BoenteBoettcher, T.Boldyrev, A.Bondar, A.Bondar, N.Borghi, S.Borisyak, M.Borsato, M.Borsuk, J. T.Bouchiba, S. A.Bowcock, T. J. V.Boyer, A.Bozzi, C.Bradley, M. J.Braun, S.Rodriguez, A. BreaBrodski, M.Brodzicka, J.Gonzalo, A. BrossaBrundu, D.Buonaura, A.Burr, C.Bursche, A.Butkevich, A.Butter, J. S.Buytaert, J.Byczynski, W.Cadeddu, S.Cai, H.Calabrese, R.Calefice, L.Diaz, L. CaleroCali, S.Calladine, R.Calvi, M.Gomez, M. CalvoMagalhaes, P. CamargoCamboni, A.Campana, P.Perez, D. H. CamporaQuezada, A. F. CampoverdeCapelli, S.Capriotti, L.Carbone, A.Carboni, G.Cardinale, R.Cardini, A.Carli, I.Carniti, P.Akiba, K. CarvalhoVidal, A. CasaisCasse, G.Cattaneo, M.Cavallero, G.Celani, S.Cerasoli, J.Chadwick, A. J.Chapman, M. G.Charles, M.Charpentier, Ph.Chatzikonstantinidis, G.Barajas, C. A. ChavezChefdeville, M.Chen, C.Chen, S.Chernov, A.Chitic, S. -G.Chobanova, V.Cholak, S.Chrzaszcz, M.Chubykin, A.Chulikov, V.Ciambrone, P.Cicala, M. F.Vidal, X. CidCiezarek, G.Clarke, P. E. L.Clemencic, M.Cliff, H. V.Closier, J.Cobbledick, J. L.Coco, V.Coelho, J. A. B.Cogan, J.Cogneras, E.Cojocariu, L.Collins, P.Colombo, T.Congedo, L.Contu, A.Cooke, N.Coombs, G.Corti, G.Sobral, C. M. CostaCouturier, B.Craik, D. C.Crkovská, J.Torres, M. CruzCurrie, R.Da Silva, C. L.Dall'Occo, E.Dalseno, J.D'Ambrosio, C.Danilina, A.d'Argent, P.Davis, A.Francisco, O. De AguiarDe Bruyn, K.De Capua, S.De Cian, M.De Miranda, J. M.De Paula, L.De Serio, M.De Simone, D.De Simone, P.de Vries, J. A.Dean, C. T.Dean, W.Decamp, D.Del Buono, L.Delaney, B.Dembinski, H. -P.Dendek, A.Denysenko, V.Derkach, D.Deschamps, O.Desse, F.Dettori, F.Dey, B.Di Nezza, P.Didenko, S.Maronas, L. DiesteDijkstra, H.Dobishuk, V.Donohoe, A. M.Dordei, F.Dorigo, M.Reis, A. C. dosDouglas, L.Dovbnya, A.Downes, A. G.Dreimanis, K.Dudek, M. W.Dufour, L.Duk, V.Durante, P.Durham, J. M.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.Féo, M.Declara, P. FernandezPrieto, A. FernandezArribas, J. M. Fernandez-tenlladoFerrari, F.Lopes, L. FerreiraRodrigues, F. FerreiraSole, S. FerreresFerrillo, M.Ferro-Luzzi, M.Filippov, S.Fini, R. A.Fiorini, M.Firlej, M.Fischer, K. M.Fitzpatrick, C.Fiutowski, T.Fleuret, F.Fontana, M.Fontanelli, F.Forty, R.Lima, V. FrancoSevilla, M. FrancoFrank, M.Franzoso, E.Frau, G.Frei, C.Friday, D. A.Fu, J.Fuehring, Q.Funk, W.Gabriel, E.Gaintseva, T.Torreira, A. GallasGalli, D.Gallorini, S.Gambetta, S.Gan, Y.Gandelman, M.Gandini, P.Gao, Y.Garau, M.Martin, L. M. GarciaMoreno, P. GarciaPardiñas, J. GarcíaPlana, B. GarciaRosales, F. A. GarciaGarrido, L.Gascon, D.Gaspar, C.Geertsema, R. E.Gerick, D.Gerken, L. L.Gersabeck, E.Gersabeck, M.Gershon, T.Gerstel, D.Ghez, Ph.Gibson, V.Giovannetti, M.Gioventù, A.Gironell, P. GironellaGiubega, L.Giugliano, C.Gizdov, K.Gkougkousis, E. L.Gligorov, V. V.Göbel, C.Golobardes, E.Golubkov, D.Golutvin, A.Gomes, A.Fernandez, S. GomezAbrantes, F. GoncalvesGoncerz, M.Gong, G.Gorbounov, P.Gorelov, I. V.Gotti, C.Govorkova, E.Grabowski, J. P.Diaz, R. GracianiGrammatico, T.Cardoso, L. A. GranadoGraugés, E.Graverini, E.Graziani, G.Grecu, A.Greeven, L. M.Griffith, P.Grillo, L.Gromov, S.Gruber, L.Cazon, B. R. GrubergGu, C.Guarise, M.Günther, P. A.Gushchin, E.Guth, A.Guz, Y.Gys, T.Hadavizadeh, T.Haefeli, G.Haen, C.Haimberger, J.Haines, S. C.Halewood-leagas, T.Hamilton, P. M.Han, Q.Han, X.Hancock, T. H.Hansmann-Menzemer, S.Harnew, N.Harrison, T.Hasse, C.Hatch, M.He, J.Hecker, M.Heijhoff, K.Heinicke, K.Hennequin, A. M.Hennessy, K.Henry, L.Heuel, J.Hicheur, A.Hill, D.Hilton, M.Hollitt, S. E.Hopchev, P. H.Hu, J.Hu, W.Huang, W.Huang, X.Hulsbergen, W.Hunter, R. J.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. K.Jawahery, A.Jevtic, V.Jezabek, M.Jiang, F.John, M.Johnson, D.Jones, C. R.Jones, T. P.Jost, B.Jurik, N.Kandybei, S.Kang, Y.Karacson, M.Kariuki, J. M.Kazeev, N.Kecke, M.Keizer, F.Kenzie, M.Ketel, T.Khanji, B.Kharisova, A.Kholodenko, S.Kim, K. E.Kirn, T.Kirsebom, V. S.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. D.Kreps, M.Kress, F.Kretzschmar, S.Krokovny, P.Krupa, W.Krzemien, W.Kucewicz, W.Kucharczyk, M.Kudryavtsev, V.Kuindersma, H. S.Kunde, G. J.Kvaratskheliya, T.Lacarrere, D.Lafferty, G.Lai, A.Lampis, A.Lancierini, D.Lane, J. J.Lane, R.Lanfranchi, G.Langenbruch, C.Langer, J.Lantwin, O.Latham, T.Lazzari, F.Gac, R. LeLee, S. H.Lefèvre, R.Leflat, A.Legotin, S.Leroy, O.Lesiak, T.Leverington, B.Li, H.Li, L.Li, P.Li, X.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. LombaLongstaff, I.Lopes, J. H.Loustau, G.Lovell, G. H.Lu, Y.Lucchesi, D.Luchuk, S.Martinez, M. LucioLukashenko, 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. R. MadhanMaev, O.Maevskiy, A.Maisuzenko, D.Majewski, M. W.Malde, S.Malecki, B.Malinin, A.Maltsev, T.Malygina, H.Manca, G.Mancinelli, G.Escalero, R. ManeraManuzzi, D.Marangotto, D.Maratas, J.Marchand, J. F.Marconi, U.Mariani, S.Benito, C. MarinMarinangeli, M.Marino, P.Marks, J.Marshall, P. J.Martellotti, G.Martinazzoli, L.Martinelli, M.Santos, D. MartinezVidal, F. MartinezMassafferri, A.Materok, M.Matev, R.Mathad, A.Mathe, Z.Matiunin, V.Matteuzzi, C.Mattioli, K. R.Mauri, A.Maurice, E.Mauricio, J.Mazurek, M.McCann, M.Mcconnell, L.Mcgrath, T. H.McNab, A.McNulty, R.Mead, J. V.Meadows, B.Meaux, C.Meier, G.Meinert, N.Melnychuk, D.Meloni, S.Merk, M.Merli, A.Garcia, L. MeyerMikhasenko, M.Milanes, D. A.Millard, E.Milovanovic, M.Minard, M. -N.Minzoni, L.Mitchell, S. E.Mitreska, B.Mitzel, D. S.Mödden, A.Mohammed, R. A.Moise, R. D.Mombächer, T.Monroy, I. A.Monteil, S.Morandin, M.Morello, G.Morello, M. J.Moron, J.Morris, A. B.Morris, A. G.Mountain, R.Mu, H.Muheim, F.Mukherjee, M.Mulder, M.Müller, D.Müller, K.Murphy, C. H.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. D.Nguyen-Mau, C.Niel, E. M.Nieswand, S.Nikitin, N.Nolte, N. S.Nunez, C.Oblakowska-Mucha, A.Obraztsov, V.O'Hanlon, D. P.Oldeman, R.Onderwater, C. J. G.Ossowska, A.Goicochea, J. M. OtaloraOvsiannikova, T.Owen, P.Oyanguren, A.Pagare, B.Pais, P. R.Pajero, T.Palano, A.Palutan, M.Pan, Y.Panshin, G.Papanestis, A.Pappagallo, M.Pappalardo, L. L.Pappenheimer, C.Parker, W.Parkes, C.Parkinson, C. J.Passalacqua, B.Passaleva, G.Pastore, A.Patel, M.Patrignani, C.Pawley, C. J.Pearce, A.Pellegrino, A.Altarelli, M. PepePerazzini, S.Pereima, D.Perret, P.Petridis, K.Petrolini, A.Petrov, A.Petrucci, S.Petruzzo, M.Philippov, A.Pica, L.Piccini, M.Pietrzyk, B.Pietrzyk, G.Pili, M.Pinci, D.Pinzino, J.Pisani, F.Piucci, A.K, Resmi P.Placinta, V.Playfer, S.Plews, J.Casasus, M. PloPolci, F.Lener, M. PoliPoliakova, M.Poluektov, A.Polukhina, N.Polyakov, I.Polycarpo, E.Pomery, G. J.Ponce, S.Popov, A.Popov, D.Popov, S.Poslavskii, S.Prasanth, K.Promberger, L.Prouve, C.Pugatch, V.Navarro, A. PuigPullen, H.Punzi, G.Qian, W.Qin, J.Quagliani, R.Quintana, B.Raab, N. V.Trejo, R. I. RabadanRachwal, B.Rademacker, J. H.Rama, M.Pernas, M. RamosRangel, M. S.Ratnikov, F.Raven, G.Reboud, M.Redi, F.Reiss, F.Alepuz, C. RemonRen, Z.Renaudin, V.Ribatti, R.Ricciardi, S.Richards, D. S.Rinnert, K.Robbe, P.Robert, A.Robertson, G.Rodrigues, A. B.Rodrigues, E.Lopez, J. A. RodriguezRollings, A.Roloff, P.Romanovskiy, V.Lamas, M. RomeroVidal, A. RomeroRoth, J. D.Rotondo, M.Rudolph, M. S.Ruf, T.Vidal, J. RuizRyzhikov, A.Ryzka, J.Silva, J. J. SaboridoSagidova, N.Sahoo, N.Saitta, B.Gonzalo, D. SanchezGras, C. SanchezMayordomo, C. SanchezSantacesaria, R.Rios, C. SantamarinaSantimaria, M.Santovetti, E.Saranin, D.Sarpis, G.Sarpis, M.Sarti, A.Satriano, C.Satta, A.Saur, M.Savrina, D.Sazak, H.Smead, L. G. ScantleburySchael, S.Schellenberg, M.Schiller, M.Schindler, H.Schmelling, M.Schmelzer, T.Schmidt, B.Schneider, O.Schopper, A.Schubiger, M.Schulte, S.Schune, M. H.Schwemmer, R.Sciascia, B.Sciubba, A.Sellam, S.Semennikov, A.Soares, M. SenghiSergi, A.Serra, N.Serrano, J.Sestini, L.Seuthe, A.Seyfert, P.Shangase, D. M.Shapkin, M.Shchemerov, I.Shchutska, L.Shears, T.Shekhtman, L.Shen, Z.Shevchenko, V.Shields, E. B.Shmanin, E.Shupperd, J. D.Siddi, B. G.Coutinho, R. SilvaSimi, G.Simone, S.Skiba, I.Skidmore, N.Skwarnicki, T.Slater, M. W.Smallwood, J. C.Smeaton, J. G.Smetkina, A.Smith, E.Smith, M.Snoch, A.Soares, M.Lavra, L. SoaresSokoloff, M. D.Soler, F. J. P.Solovev, A.Solovyev, I.De Almeida, F. L. SouzaDe Paula, B. SouzaSpaan, B.Norella, E. SpadaroSpradlin, P.Stagni, F.Stahl, M.Stahl, S.Stefko, P.Steinkamp, O.Stemmle, S.Stenyakin, O.Stevens, H.Stone, S.Stramaglia, M. E.Straticiuc, M.Strekalina, D.Strokov, S.Suljik, F.Sun, J.Sun, L.Sun, Y.Svihra, P.Swallow, P. N.Swientek, K.Szabelski, A.Szumlak, T.Szymanski, M.Taneja, S.Tang, Z.Tekampe, T.Teubert, F.Thomas, E.Thomson, K. A.Tilley, M. J.Tisserand, V.T'Jampens, S.Tobin, M.Tolk, S.Tomassetti, L.Machado, D. TorresTou, D. Y.Traill, M.Tran, M. T.Trifonova, E.Trippl, C.Tsaregorodtsev, A.Tuci, G.Tully, A.Tuning, N.Ukleja, A.Unverzagt, D. J.Usachov, A.Ustyuzhanin, A.Uwer, U.Vagner, A.Vagnoni, V.Valassi, A.Valenti, G.Canudas, N. Vallsvan Beuzekom, M.Van Hecke, H.van Herwijnen, E.Van Hulse, C. B.van Veghel, M.Gomez, R. VazquezRegueiro, P. VazquezSierra, C. VázquezVecchi, S.Velthuis, J. J.Veltri, M.Venkateswaran, A.Veronesi, M.Vesterinen, M.Vieira, D.Diaz, M. VieitesViemann, H.Vilasis-Cardona, X.Figueras, E. VilellaVincent, P.Vitali, G.Vollhardt, A.Bruch, D. VomVorobyev, A.Vorobyev, V.Voropaev, N.Waldi, R.Walsh, J.Wang, C.Wang, J.Wang, M.Wang, R.Wang, Y.Wang, Z.Ward, D. R.Wark, H. M.Watson, N. K.Weber, S. G.Websdale, D.Weisser, C.Westhenry, B. D. C.White, D. J.Whitehead, M.Wiedner, D.Wilkinson, G.Wilkinson, M.Williams, I.Williams, M.Williams, M. R. J.Wilson, F. F.Wislicki, W.Witek, M.Witola, L.Wormser, G.Wotton, S. A.Wu, H.Wyllie, K.Xiang, Z.Xiao, D.Xie, Y.Xing, H.Xu, A.Xu, J.Xu, L.Xu, M.Xu, Q.Xu, Z.Yang, D.Yang, Y.Yang, Z.Yao, Y.Yeomans, L. E.Yin, H.Yu, J.Yuan, X.Yushchenko, O.Zarebski, K. A.Zavertyaev, M.Zdybal, M.Zenaiev, O.Zeng, M.Zhang, D.Zhang, L.Zhang, S.Zhang, Y.Zhelezov, A.Zheng, Y.Zhou, X.Zhou, Y.Zhu, X.Zhukov, V.Zonneveld, J. B.Zucchelli, S.Zuliani, D.Zunica, G.
Source
JHEP 02 (2021) 023
Subject
High Energy Physics - Experiment
Language
Abstract
The inclusive $b \bar{b}$- and $c \bar{c}$-dijet production cross-sections in the forward region of $pp$ collisions are measured using a data sample collected with the LHCb detector at a centre-of-mass energy of 13 TeV in 2016. The data sample corresponds to an integrated luminosity of 1.6 fb$^{-1}$. Differential cross-sections are measured as a function of the transverse momentum and of the pseudorapidity of the leading jet, of the rapidity difference between the jets, and of the dijet invariant mass. A fiducial region for the measurement is defined by requiring that the two jets originating from the two $b$ or $c$ quarks are emitted with transverse momentum greater than 20 GeV$/c$, pseudorapidity in the range $2.2 < \eta < 4.2$, and with a difference in the azimuthal angle between the two jets greater than 1.5. The integrated $b \bar{b}$-dijet cross-section is measured to be $53.0 \pm 9.7$ nb, and the total $c \bar{c}$-dijet cross-section is measured to be $73 \pm 16$ nb. The ratio between $c \bar{c}$- and $b \bar{b}$-dijet cross-sections is also measured and found to be $1.37 \pm 0.27$. The results are in agreement with theoretical predictions at next-to-leading order.
Comment: All figures and tables, along with any supplementary material and additional information, are available at https://cern.ch/lhcbproject/Publications/p/LHCb-PAPER-2020-018.html (LHCb public pages)