Measurement of differential $$ b\overline{b} $$- and $$ c\overline{c} $$-dijet cross-sections in the forward region of pp collisions at $$ \sqrt{s} $$ = 13 TeV

Author:

Aaij R., ,Abellán Beteta C.,Ackernley T.,Adeva B.,Adinolfi M.,Afsharnia H.,Aidala C. A.,Aiola S.,Ajaltouni Z.,Akar S.,Albrecht J.,Alessio F.,Alexander M.,Alfonso Albero A.,Aliouche Z.,Alkhazov G.,Alvarez 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. J.,Baker S.,Baladron Rodriguez P.,Balagura V.,Baldini W.,Baptista Leite J.,Barlow 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.,Boente Garcia O.,Boettcher 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.,Brea Rodriguez A.,Brodski M.,Brodzicka J.,Brossa Gonzalo A.,Brundu D.,Buonaura A.,Burr C.,Bursche A.,Butkevich A.,Butter J. S.,Buytaert J.,Byczynski W.,Cadeddu S.,Cai H.,Calabrese R.,Calefice L.,Calero Diaz L.,Cali S.,Calladine R.,Calvi M.,Calvo Gomez M.,Camargo Magalhaes P.,Camboni A.,Campana P.,Campora Perez D. H.,Campoverde Quezada A. F.,Capelli S.,Capriotti L.,Carbone A.,Carboni G.,Cardinale R.,Cardini A.,Carli I.,Carniti P.,Carvalho Akiba K.,Casais Vidal A.,Casse G.,Cattaneo M.,Cavallero G.,Celani S.,Cerasoli J.,Chadwick A. J.,Chapman M. G.,Charles M.,Charpentier Ph.,Chatzikonstantinidis G.,Chavez Barajas C. A.,Chefdeville 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.,Cid Vidal X.,Ciezarek 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.,Costa Sobral C. M.,Couturier B.,Craik D. C.,Crkovská J.,Cruz Torres M.,Currie R.,Da Silva C. L.,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. 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.,Dieste Maronas L.,Dijkstra H.,Dobishuk V.,Donohoe A. M.,Dordei F.,Dorigo M.,dos Reis A. C.,Douglas 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.,Fernandez Declara P.,Fernandez Prieto A.,Fernandez-tenllado Arribas J. M.,Ferrari F.,Ferreira Lopes L.,Ferreira Rodrigues F.,Ferreres Sole S.,Ferrillo 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.,Franco Lima V.,Franco Sevilla M.,Frank M.,Franzoso E.,Frau G.,Frei C.,Friday D. A.,Fu J.,Fuehring Q.,Funk W.,Gabriel E.,Gaintseva T.,Gallas Torreira A.,Galli D.,Gallorini S.,Gambetta S.,Gan Y.,Gandelman M.,Gandini P.,Gao Y.,Garau M.,Garcia Martin L. M.,Garcia Moreno P.,García Pardiñas J.,Garcia Plana B.,Garcia Rosales F. A.,Garrido 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.,Gironella Gironell P.,Giubega L.,Giugliano C.,Gizdov K.,Gkougkousis E. L.,Gligorov V. V.,Göbel C.,Golobardes E.,Golubkov D.,Golutvin A.,Gomes A.,Gomez Fernandez S.,Goncalves Abrantes F.,Goncerz M.,Gong G.,Gorbounov P.,Gorelov I. V.,Gotti C.,Govorkova E.,Grabowski J. P.,Graciani Diaz R.,Grammatico T.,Granado Cardoso L. A.,Graugés E.,Graverini E.,Graziani G.,Grecu A.,Greeven L. M.,Griffith P.,Grillo L.,Gromov S.,Gruber L.,Gruberg Cazon B. R.,Gu 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 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.,Le Gac R.,Lee 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 Y.,Li Z.,Liang X.,Lin T.,Lindner R.,Lisovskyi V.,Litvinov R.,Liu G.,Liu H.,Liu S.,Liu X.,Loi A.,Lomba Castro J.,Longstaff I.,Lopes J. H.,Loustau G.,Lovell G. H.,Lu Y.,Lucchesi D.,Luchuk S.,Lucio 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.,Madhan Mohan L. R.,Maev O.,Maevskiy A.,Maisuzenko D.,Majewski M. W.,Malde S.,Malecki B.,Malinin A.,Maltsev T.,Malygina H.,Manca G.,Mancinelli G.,Manera Escalero R.,Manuzzi D.,Marangotto D.,Maratas J.,Marchand J. F.,Marconi U.,Mariani S.,Marin Benito C.,Marinangeli M.,Marino P.,Marks J.,Marshall P. J.,Martellotti G.,Martinazzoli L.,Martinelli M.,Martinez Santos D.,Martinez Vidal F.,Massafferri 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.,Meyer Garcia L.,Mikhasenko 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.,Otalora Goicochea J. M.,Ovsiannikova 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.,Pepe Altarelli M.,Perazzini 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.,Resmi P. K,Placinta V.,Playfer S.,Plews J.,Plo Casasus M.,Polci F.,Poli Lener M.,Poliakova 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.,Puig Navarro A.,Pullen H.,Punzi G.,Qian W.,Qin J.,Quagliani R.,Quintana B.,Raab N. V.,Rabadan Trejo R. I.,Rachwal B.,Rademacker J. H.,Rama M.,Ramos Pernas M.,Rangel M. 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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.,Zhang Y.,Zhelezov A.,Zheng Y.,Zhou X.,Zhou Y.,Zhu X.,Zhukov V.,Zonneveld J. B.,Zucchelli S.,Zuliani D.,Zunica G.

Abstract

Abstract The inclusive $$ b\overline{b} $$ b b ¯ - and $$ c\overline{c} $$ c 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 fb1. 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 < η < 4.2, and with a difference in the azimuthal angle between the two jets greater than 1.5. The integrated $$ b\overline{b} $$ b b ¯ -dijet cross-section is measured to be 53.0 ± 9.7 nb, and the total $$ c\overline{c} $$ c c ¯ -dijet cross-section is measured to be 73 ± 16 nb. The ratio between $$ c\overline{c} $$ c c ¯ - and $$ b\overline{b} $$ b b ¯ -dijet cross-sections is also measured and found to be 1.37 ± 0.27. The results are in agreement with theoretical predictions at next-to-leading order.

Publisher

Springer Science and Business Media LLC

Subject

Nuclear and High Energy Physics

Cited by 5 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Standard model measurements at the LHC;International Journal of Modern Physics A;2023-04-10

2. Precision QCD Physics at the LHC;Annual Review of Nuclear and Particle Science;2022-09-26

3. Production of forward heavy-flavor dijets at the LHCb within the kT -factorization approach;Physical Review D;2022-09-15

4. The role of multi-parton interactions in doubly-heavy hadron production;The European Physical Journal C;2022-09-01

5. Identification of charm jets at LHCb;Journal of Instrumentation;2022-02-01

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