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Energy-energy correlators within $Z$-tagged jets in proton-proton collisions at $\sqrt{s}$ = 13 TeV

LHCb Collaboration R. Aaij M. Abdelfatah A. Abdelmotteleb C. Beteta F. Abudinén T. Ackernley A. Adefisoye B. Adeva M. Adinolfi P. Adlarson C. Agapopoulou C. Aidala S. Akar K. Akiba H. A. Al Saleh P. Albicocco J. Albrecht R. Aleksieju̅nas Federico Alessio P. Cartelle A. Alves S. Amato J. Amey Y. Amhis Z. Amos L. An L. Anderlini P. Andreola M. Andreotti S. Estrada A. Anelli D. Ao C. Arata F. Archilli Z. Areg M. Argenton S. A. Cuendis L. Arnone M. Artuso E. Aslanides R. D. Da Silva M. Atzeni B. Audurier J. Authier D. Bacher I. Perea S. Bachmann M. Bachmayer J. Back M. Bai Zhang Bai V. Balagura A. Balboni W. Baldini Z. Baldwin L. Balzani H. Bao J. B. de Souza Leite C. Pretel M. Barbetti I. R. Barbosa W. Barker R. Barlow M. Barnyakov S. Baron S. Barsuk W. Barter J. Bartz S. Bashir B. Batsukh P. Battista A. Bavarchee A. Bay A. Beck M. Becker F. Bedeschi I. Bediaga N. B. Behling S. Belin A. Bellavista I. Belyaev G. Bencivenni E. Ben-Haim J. M. Berkey R. Bernet A. Bertolin L. Bertsch F. Betti J. Bex O. Bezshyyko S. Bhattacharya M. Bieker N. Biesuz A. Biolchini M. Birch F. Bishop A. Bitadze A. Bizzeti T. Blake F. Blanc J. Blank S. Blusk J. Boelhauve O. B. Garcia T. Boettcher A. Bohare C. Bolognani R. Bonacci A. Bordelius F. Borgato S. Borghi M. Borsato J. Borsuk E. Bottalico S. A. Bouchiba M. Bovill T. Bowcock A. Boyer C. Bozzi J. Brandenburg A. Rodriguez N. Breer C. Breitfeld J. Brodzicka J. Brown E. Buchanan M. Marcos C. Burr E. Butera C. Buti J. Butter W. Byczynski S. Cadeddu H. Cai Y. Cai A. Caillet R. Calabrese L. Calefice M. Calvi M. Gomez P. Magalhaes J. I. Cambon Bouzas P. Campana A. Campomagnani A. C. Campos A. F. Campoverde Quezada Y. Cao S. Capelli M. Caporale L. Capriotti R. Caravaca-Mora A. Carbone L. C. Salgado R. Cardinale A. Cardini P. Carniti L. Carus R. Caspary G. Casse M. Cattaneo G. Cavallero V. Cavallini S. Celani I. Celestino S. Cesare A. J. Chadwick M. Charles Ph. Charpentier E. Chatzianagnostou R. Cheaib M. Chefdeville C. Chen J. Chen S. Chen Z. Chen Chen-Jie Hu M. Cherif S. Chernyshenko X. Chiotopoulos G. Chizhik V. Chobanova A. Christakakis M. Chrzaszcz Y. Chu V. Chulikov P. Ciambrone X. Vidal P. Cifra P. Clarke M. Clemencic H. V. Cliff J. Closier C. Toapaxi V. Coco A. Codovini C. Codovini J. Cogan E. Cogneras L. Cojocariu S. Collaviti P. Collins T. Colombo M. Colonna A. Comerma-Montells L. Congedo J. Connaughton A. Contu N. Cooke A. Corallo G. Cordova C. Coronel I. Corredoira A. Correia G. Corti G. Costantino C. Cotirlan J. Meldrum B. Couturier D. C. Craik N. Crepet M. Torres M. Campos E. Rivera R. Currie C. D. Da Silva X. Dai J. Dalseno C. D'Ambrosio G. Darze A. Davidson O. D. de Aguiar Francisco C. De Angelis F. De Benedetti J. de Boer K. De Bruyn S. De Capua M. De Cian U. De Freitas Carneiro Da Graca F. D. de Gregorio E. De Lucia J. De Miranda L. De Paula A. De Robertis E. De Santis M. De Serio P. De Simone F. De Vellis J. D. de Vries F. Debernardis D. Decamp S. Dekkers L. Del Buono B. Delaney B. Demaire-Lepape J. Deng O. Deschamps F. Dettori B. Dey P. Di Nezza S. Ding Y. Ding L. Dittmann J. F. Diverchy A. Docheva A. Doheny C. Dong F. Dordei J. Moreno A. dos Reis J. M. dos Santos Oliveira A. Dowling L. Dreyfus W. Duan P. Duda L. Dufour V. Duk P. Durante M. Duras J. Durham K. Duwe A. Dziurda S. Easo E. Eckstein U. Egede S. Eisenhardt E. Ejopu L. Eklund M. Elashri D. Blanco J. Ellbracht S. Ely A. Ene T. Evans F. Fabiano S. Faghih L. N. Falcao B. Fang R. Fantechi L. Fantini M. Faria K. Farmer F. Fassin D. Fazzini L. Felkowski C. Feng M. Feng A. Casani M. Gomez B. F. Rodino J. Fernandez-John A. Fernez F. Ferrari F. Rodrigues R. Fini R. Fiorenza M. Fiorini M. Firlej D. Fitzgerald C. Fitzpatrick T. Fiutowski F. Fleuret A. Fomin M. Fontana M. Vaz L. Foreman R. Forty D. Foulds-Holt V. Lima M. Sevilla M. Frank E. Franzoso G. Frau C. Frei D. Friday J. Fu Y. Fu Q. Führing T. Fulghesu G. Galati M. D. Galati A. Torreira D. Galli S. Gambetta M. Gandelman P. Gandini B. Ganie H. Gao R. Gao T. Gao Y. Gao L. Garcia Martin P. Moreno J. Pardiñas P. Gardner L. Garrido C. Gaspar A. Gavrikov J. George E. Gersabeck M. Gersabeck T. Gershon S. Ghizzo Z. Ghorbanimoghaddam F. I. Giasemis V. Gibson H. Giemza A. Gilman M. Giovannetti A. Gioventù L. Girardey M. Giza F. Glaser V. Gligorov C. Göbel L. Golinka-Bezshyyko E. Golobardes A. Golutvin S. Fernandez A. G. Gomez Mongui W. Gomulka F. Abrantes I. Vaz M. Goncerz G. Gong S. Gong J. Gooding C. Gotti E. Govorkova J. Grabowski L. G. Granado Cardoso R. G. Quartieri E. Graugés E. Graverini L. Grazette G. Graziani A. Grecu N. A. Grieser L. Grillo C. Gu M. Guarise L. Guerry A. Guseinov Y. Guz T. Gys K. Habermann T. Hadavizadeh C. Hadjivasiliou G. Haefeli C. Haen S. Haken G. Hallett P. Hamilton Q. Han S. Han X. Han S. Hansmann-Menzemer N. Harnew T. J. Harris L. Hartman M. Hartmann S. Hashmi J. He N. Heatley A. Hedes F. Hemmer C. Henderson R. Henderson R. Henderson A. Hennequin K. Hennessy A. Henrot J. Herd P. Gascon J. Heuel A. Heyn A. Hicheur G. Mendizabal J. Horswill R. Hou Y. Hou D. C. Houston N. Howarth P. H. Hopchev X. Hu W. Hulsbergen R. Hunter D. Hutchcroft M. Idzik P. Ilten A. Iohner S. Jacevicius H. Jage S. J. Jaimes Elles S. Jakobsen T. Jakoubek E. Jans A. Jawahery C. Jayaweera A. Jelavic V. Jevtic Z. Jia E. Jiang X. Jiang Y. Jiang Y.-J. Jiang E. Moya N. Jindal M. John A. Rajan D. Johnson C. R. Jones S. Joshi B. Jost J. Castella N. Jurik I. Juszczak K. Kalecińska D. Kaminaris S. Kandybei M. Kane Y. Kang C. Kar A. Kauniskangas J. Kautz M. Kazanecki F. Keizer M. Kenzie T. Ketel B. Khanji S. Kholodenko V. Kholoimov G. Khreich F. Kiraz T. Kirn V. S. Kirsebom N. Kleijne A. Kleimenova D. Klekots K. Klimaszewski M. Kmieć
Oct 2026 · 0 citations · 44 references
Physics

Abstract

Energy-energy correlators probe perturbative and nonperturbative QCD regimes of jet formation through momentum-weighted angular correlations between hadrons. First measurements in light-quark-enriched jets are presented for inclusive, like-sign, and opposite-sign charged-hadron pairs, using proton-proton collisions at LHCb. The results support universality of the confinement scale for light-quark-initiated jets across collision systems and the reported transverse momentum scale of the jet. In the charge-dependent measurements, opposite-sign correlations are enhanced as angular separation decreases down to the confinement-scale region, a behavior that is well described by simulations.

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