Related papers: Three-jet angular correlations and subjet distribu…

Determination of the strong coupling constant using subjet multiplicities in Neutral Current Deep Inelastic Scattering

The internal structure of the jets produced in neutral current interactions for Q^2>125 GeV^2 has been studied using the subjet multiplicity with the ZEUS detector at HERA. Jets are identified in the laboratory frame by applying the…

High Energy Physics - Experiment · Physics 2015-06-25 O. Gonzalez

Jet-radius dependence of inclusive-jet cross sections in deep inelastic scattering at HERA

Differential inclusive-jet cross sections have been measured for different jet radii in neutral current deep inelastic ep scattering for boson virtualities Q^2 > 125 GeV^2 with the ZEUS detector at HERA using an integrated luminosity of…

High Energy Physics - Experiment · Physics 2012-08-03 ZEUS Collaboration , S. Chekanov

Three jet cross sections in photoproduction at HERA

We calculate three jet cross sections in photoproduction using exact matrix elements for the direct and resolved contributions. Numerical distributions are presented in a generic, irreducible set of variables that allows to disentangle the…

High Energy Physics - Phenomenology · Physics 2014-11-17 Michael Klasen

Measurement of angular correlations of jets at sqrt(s)=1.96 TeV and determination of the strong coupling at high momentum transfers

We present a measurement of the average value of a new observable at hadron colliders that is sensitive to QCD dynamics and to the strong coupling constant, while being only weakly sensitive to parton distribution functions. The observable…

High Energy Physics - Experiment · Physics 2012-12-04 D0 Collaboration

Angular Correlations and Light Gluinos in Multi-jet Photoproduction at HERA

A study of $3+1$ jet event photoproduction at HERA is presented. We define an angular variable which is sensitive to the topology of the final state jets and is therefore able to discriminate between the different contributing subprocesses,…

High Energy Physics - Phenomenology · Physics 2011-07-19 R. Muñoz-Tapia , W. J. Stirling

Energy-energy correlators in jets across collision systems and parton flavors

The two-point energy-energy correlator (EEC) is a novel jet substructure observable probing the correlation of energy flow within jets. In these proceedings, three EEC measurements performed by the ALICE Collaboration are reported. First is…

Nuclear Experiment · Physics 2025-10-21 Anjali Nambrath

Jet Production in ep Collisions at High Q^2 and Determination of alpha_s

The production of jets is studied in deep-inelastic ep scattering at large negative four momentum transfer squared 150<Q^2<15000 GeV^2 using HERA data taken in 1999-2007, corresponding to an integrated luminosity of 395 pb^-1. Inclusive…

High Energy Physics - Experiment · Physics 2012-08-27 H1 Collaboration

Measurement of subjet multiplicities in neutral current deep inelastic scattering at HERA and determination of $\alpha_s$

The subjet multiplicity has been measured in neutral current e+p interactions at Q**2 > 125 GeV**2 with the ZEUS detector at HERA using an integrated luminosity of 38.6 pb-1. Jets were identified in the laboratory frame using the…

High Energy Physics - Experiment · Physics 2012-08-27 ZEUS Collaboration

Jet-hadron correlations in STAR

Advancements in full jet reconstruction have made it possible to use jets as triggers in azimuthal angular correlations to study the modification of hard-scattered partons in the medium created in ultrarelativistic heavy-ion collisions.…

Nuclear Experiment · Physics 2019-08-13 Alice Ohlson

Heavy Flavours at ZEUS and H1

An overview of recent measurements of charm and beauty production in ep collisions at HERA is presented. Various techniques are used by the ZEUS and H1 collaborations to efficiently tag heavy quarks in events and different regions of phase…

High Energy Physics - Experiment · Physics 2009-06-17 S. K. Boutle

Measurements of jet quenching with semi-inclusive hadron+jet distributions in Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV

The STAR Collaboration reports the measurement of semi-inclusive distributions of charged-particle jets recoiling from a high transverse momentum hadron trigger, in central and peripheral Au+Au collisions at $\sqrt{s_{NN}}$ = 200 GeV.…

Nuclear Experiment · Physics 2017-08-23 STAR Collaboration , L. Adamczyk , J. K. Adkins , G. Agakishiev , M. M. Aggarwal , Z. Ahammed , N. N. Ajitanand , I. Alekseev , D. M. Anderson , R. Aoyama , A. Aparin , D. Arkhipkin , E. C. Aschenauer , M. U. Ashraf , A. Attri , G. S. Averichev , X. Bai , V. Bairathi , A. Behera , R. Bellwied , A. Bhasin , A. K. Bhati , P. Bhattarai , J. Bielcik , J. Bielcikova , L. C. Bland , I. G. Bordyuzhin , J. Bouchet , J. D. Brandenburg , A. V. Brandin , D. Brown , I. Bunzarov , J. Butterworth , H. Caines , M. Calderon de la Barca Sanchez , J. M. Campbell , D. Cebra , I. Chakaberia , P. Chaloupka , Z. Chang , N. Chankova-Bunzarova , A. Chatterjee , S. Chattopadhyay , X. Chen , J. H. Chen , X. Chen , J. Cheng , M. Cherney , W. Christie , G. Contin , H. J. Crawford , S. Das , L. C. De Silva , R. R. Debbe , T. G. Dedovich , J. Deng , A. A. Derevschikov , L. Didenko , C. Dilks , X. Dong , J. L. Drachenberg , J. E. Draper , L. E. Dunkelberger , J. C. Dunlop , L. G. Emov , N. Elsey , J. Engelage , G. Eppley , R. Esha , S. Esumi , O. Evdokimov , J. Ewigleben , O. Eyser , R. Fatemi , S. Fazio , P. Federic , P. Federicova , J. Fedorisin , Z. Feng , P. Filip , E. Finch , Y. Fisyak , C. E. Flores , L. Fulek , C. A. Gagliardi , D. Garand , F. Geurts , A. Gibson , M. Girard , D. Grosnick , D. S. Gunarathne , Y. Guo , A. Gupta , S. Gupta , W. Guryn , A. I. Hamad , A. Hamed , A. Harlenderova , J. W. Harris , L. He , S. Heppelmann , S. Heppelmann , A. Hirsch , G. W. Homann , S. Horvat , T. Huang , B. Huang , X. Huang , H. Z. Huang , T. J. Humanic , P. Huo , G. Igo , P. M. Jacobs , W. W. Jacobs , A. Jentsch , J. Jia , K. Jiang , S. Jowzaee , E. G. Judd , S. Kabana , D. Kalinkin , K. Kang , K. Kauder , H. W. Ke , D. Keane , A. Kechechyan , Z. Khan , D. P. Kiko la , I. Kisel , A. Kisiel , L. Kochenda , M. Kocmanek , T. Kollegger , L. K. Kosarzewski , A. F. Kraishan , P. Kravtsov , K. Krueger , N. Kulathunga , L. Kumar , J. Kvapil , J. H. Kwasizur , R. Lacey , J. M. Landgraf , K. D. Landry , J. Lauret , A. Lebedev , R. Lednicky , J. H. Lee , X. Li , C. Li , W. Li , Y. Li , J. Lidrych , T. Lin , M. A. Lisa , H. Liu , P. Liu , Y. Liu , F. Liu , T. Ljubicic , W. J. Llope , M. Lomnitz , R. S. Longacre , S. Luo , X. Luo , G. L. Ma , L. Ma , Y. G. Ma , R. Ma , N. Magdy , R. Majka , D. Mallick , S. Margetis , C. Markert , H. S. Matis , K. Meehan , J. C. Mei , Z. W. Miller , N. G. Minaev , S. Mioduszewski , D. Mishra , S. Mizuno , B. Mohanty , M. M. Mondal , D. A. Morozov , M. K. Mustafa , Md. Nasim , T. K. Nayak , J. M. Nelson , M. Nie , G. Nigmatkulov , T. Niida , L. V. Nogach , T. Nonaka , S. B. Nurushev , G. Odyniec , A. Ogawa , K. Oh , V. A. Okorokov , D. Olvitt , B. S. Page , R. Pak , Y. Pandit , Y. Panebratsev , B. Pawlik , H. Pei , C. Perkins , P. Pile , J. Pluta , K. Poniatowska , J. Porter , M. Posik , A. M. Poskanzer , N. K. Pruthi , M. Przybycien , J. Putschke , H. Qiu , A. Quintero , S. Ramachandran , R. L. Ray , R. Reed , M. J. Rehbein , H. G. Ritter , J. B. Roberts , O. V. Rogachevskiy , J. L. Romero , J. D. Roth , L. Ruan , J. Rusnak , O. Rusnakova , N. R. Sahoo , P. K. Sahu , S. Salur , J. Sandweiss , M. Saur , J. Schambach , A. M. Schmah , W. B. Schmidke , N. Schmitz , B. R. Schweid , J. Seger , M. Sergeeva , P. Seyboth , N. Shah , E. Shahaliev , P. V. Shanmuganathan , M. Shao , A. Sharma , M. K. Sharma , W. Q. Shen , Z. Shi , S. S. Shi , Q. Y. Shou , E. P. Sichtermann , R. Sikora , M. Simko , S. Singha , M. J. Skoby , N. Smirnov , D. Smirnov , W. Solyst , L. Song , P. Sorensen , H. M. Spinka , B. Srivastava , T. D. S. Stanislaus , M. Strikhanov , B. Stringfellow , T. Sugiura , M. Sumbera , B. Summa , Y. Sun , X. M. Sun , X. Sun , B. Surrow , D. N. Svirida , A. H. Tang , Z. Tang , A. Taranenko , T. Tarnowsky , A. Tawk , J. Thader , J. H. Thomas , A. R. Timmins , D. Tlusty , T. Todoroki , M. Tokarev , S. Trentalange , R. E. Tribble , P. Tribedy , S. K. Tripathy , B. A. Trzeciak , O. D. Tsai , T. Ullrich , D. G. Underwood , I. Upsal , G. Van Buren , G. van Nieuwenhuizen , A. N. Vasiliev , F. Videbk , S. Vokal , S. A. Voloshin , A. Vossen , G. Wang , Y. Wang , F. Wang , Y. Wang , J. C. Webb , G. Webb , L. Wen , G. D. Westfall , H. Wieman , S. W. Wissink , R. Witt , Y. Wu , Z. G. Xiao , W. Xie , G. Xie , J. Xu , N. Xu , Q. H. Xu , Y. F. Xu , Z. Xu , Y. Yang , Q. Yang , C. Yang , S. Yang , Z. Ye , Z. Ye , L. Yi , K. Yip , I. -K. Yoo , N. Yu , H. Zbroszczyk , W. Zha , Z. Zhang , X. P. Zhang , J. B. Zhang , S. Zhang , J. Zhang , Y. Zhang , J. Zhang , S. Zhang , J. Zhao , C. Zhong , L. Zhou , C. Zhou , X. Zhu , Z. Zhu , M. Zyzak

QCD Studies at HERA

Several topics from the wide field of QCD studies in Deep-inelastic $ep$ Scattering at HERA are addressed. They include QCD analyses of the inclusive cross section with the determination of $\alpha_s$ and the proton gluon density from the…

High Energy Physics - Phenomenology · Physics 2007-05-23 J. Olsson

Jet substructure in high-energy hadron collisions

In the past years significant progress has been made toward achieving a quantitative understanding of jets and their substructure in high-energy proton-proton collisions from first principles in QCD. Precise measurements have become…

High Energy Physics - Phenomenology · Physics 2018-12-19 Felix Ringer

Jets and high-$p_{T}$ probes measured in the STAR experiment

Hard probes created through large momentum transfers are used to study the properties of QCD matter created in heavy-ion collisions, by comparing the measurements to those in p+p collisions. Jets, and the "quenching" or suppression of jets…

Nuclear Experiment · Physics 2016-11-08 Nihar Ranjan Sahoo

Measurement of beauty and charm production in deep inelastic scattering at HERA and measurement of the beauty-quark mass

The production of beauty and charm quarks in ep interactions has been studied with the ZEUS detector at HERA for exchanged four-momentum squared 5 < Q^2 < 1000 GeV^2 using an integrated luminosity of 354 pb^{-1}. The beauty and charm…

High Energy Physics - Experiment · Physics 2014-10-22 ZEUS collaboration , H. Abramowicz , I. Abt , L. Adamczyk , M. Adamus , R. Aggarwal , S. Antonelli , O. Arslan , V. Aushev , Y. Aushev , O. Bachynska , A. N. Barakbaev , N. Bartosik , O. Behnke , J. Behr , U. Behrens , A. Bertolin , S. Bhadra , I. Bloch , V. Bokhonov , E. G. Boos , K. Borras , I. Brock , R. Brugnera , A. Bruni , B. Brzozowska , P. J. Bussey , A. Caldwell , M. Capua , C. D. Catterall , J. Chwastowski , J. Ciborowski , R. Ciesielski , A. M. Cooper-Sarkar , M. Corradi , F. Corriveau , G. D'Agostini , R. K. Dementiev , R. C. E. Devenish , G. Dolinska , V. Drugakov , S. Dusini , J. Ferrando , J. Figiel , B. Foster , G. Gach , A. Garfagnini , A. Geiser , A. Gizhko , L. K. Gladilin , O. Gogota , Yu. A. Golubkov , J. Grebenyuk , I. Gregor , G. Grzelak , O. Gueta , M. Guzik , W. Hain , G. Hartner , D. Hochman , R. Hori , Z. A. Ibrahim , Y. Iga , M. Ishitsuka , A. Iudin , F. Januschek , I. Kadenko , S. Kananov , T. Kanno , U. Karshon , M. Kaur , P. Kaur , L. A. Khein , D. Kisielewska , R. Klanner , U. Klein , N. Kondrashova , O. Kononenko , Ie. Korol , I. A. Korzhavina , A. Kotański , U. Kötz , N. Kovalchuk , H. Kowalski , O. Kuprash , M. Kuze , B. B. Levchenko , A. Levy , V. Libov , S. Limentani , M. Lisovyi , E. Lobodzinska , W. Lohmann , B. Löhr , E. Lohrmann , A. Longhin , D. Lontkovskyi , O. Yu. Lukina , J. Maeda , I. Makarenko , J. Malka , J. F. Martin , S. Mergelmeyer , F. Mohamad Idris , K. Mujkic , V. Myronenko , K. Nagano , A. Nigro , T. Nobe , D. Notz , R. J. Nowak , K. Olkiewicz , Yu. Onishchuk , E. Paul , W. Perlański , H. Perrey , N. S. Pokrovskiy , A. S. Proskuryakov , M. Przybycień , A. Raval , P. Roloff , I. Rubinsky , M. Ruspa , V. Samojlov , D. H. Saxon , M. Schioppa , W. B. Schmidke , U. Schneekloth , T. Schörner-Sadenius , J. Schwartz , L. M. Shcheglova , R. Shehzadi , R. Shevchenko , O. Shkola , I. Singh , I. O. Skillicorn , W. Słomiński , V. Sola , A. Solano , A. Spiridonov , L. Stanco , N. Stefaniuk , A. Stern , T. P. Stewart , P. Stopa , J. Sztuk-Dambietz , D. Szuba , J. Szuba , E. Tassi , T. Temiraliev , K. Tokushuku , J. Tomaszewska , A. Trofymov , V. Trusov , T. Tsurugai , M. Turcato , O. Turkot , T. Tymieniecka , A. Verbytskyi , O. Viazlo , R. Walczak , W. A. T. Wan Abdullah , K. Wichmann , M. Wing , G. Wolf , S. Yamada , Y. Yamazaki , N. Zakharchuk , A. F. Żarnecki , L. Zawiejski , O. Zenaiev , B. O. Zhautykov , N. Zhmak , D. S. Zotkin

Probing QCD at the Highest $Q^2$ Deep Inelastic Scattering

Recent results from the HERA ep collider are reviewed in these proceedings. The results are from measurements that probe QCD at high-energy scales, as defined by $Q^2$, the four-momentum-transfer squared of the collisions. These…

High Energy Physics - Experiment · Physics 2009-11-05 J. Ferrando

Jet-Studies and $\alpha_s$-determinations at HERA

Recent results from the H1 and ZEUS Collaborations on inclusive single and multiple jet production in the neutral current deep inelastic scattering of electrons/positrons on protons and the high energy photoproduction on protons at HERA are…

High Energy Physics - Experiment · Physics 2007-05-23 Gerd W. Buschhorn

Measurement of jet production in deep inelastic scattering and NNLO determination of the strong coupling at ZEUS

A new measurement of inclusive-jet cross sections in the Breit frame in neutral current deep inelastic scattering using the ZEUS detector at the HERA collider is presented. The data were taken in the years 2004 to 2007 at a centre-of-mass…

High Energy Physics - Experiment · Physics 2024-02-05 ZEUS Collaboration , I. Abt , R. Aggarwal , V. Aushev , O. Behnke , A. Bertolin , I. Bloch , I. Brock , N. H. Brook , R. Brugnera , A. Bruni , P. J. Bussey , A. Caldwell , C. D. Catterall , J. Chwastowski , J. Ciborowski , R. Ciesielski , A. M. Cooper-Sarkar , M. Corradi , R. K. Dementiev , S. Dusini , J. Ferrando , B. Foster , E. Gallo , D. Gangadharan , A. Garfagnini , A. Geiser , G. Grzelak , C. Gwenlan , D. Hochman , N. Z. Jomhari , I. Kadenko , U. Karshon , P. Kaur , R. Klanner , U. Klein , I. A. Korzhavina , N. Kovalchuk , M. Kuze , B. B. Levchenko , A. Levy , B. Löhr , E. Lohrmann , A. Longhin , F. Lorkowski , E. Lunghi , I. Makarenko , J. Malka , S. Masciocchi , K. Nagano , J. D. Nam , Yu. Onishchuk , E. Paul , I. Pidhurskyi , A. Polini , M. Przybycień , A. Quintero , M. Ruspa , U. Schneekloth , T. Schörner-Sadenius , I. Selyuzhenkov , M. Shchedrolosiev , L. M. Shcheglova , N. Sherrill , I. O. Skillicorn , W. Słomiński , A. Solano , L. Stanco , N. Stefaniuk , B. Surrow , K. Tokushuku , O. Turkot , T. Tymieniecka , A. Verbytskyi , W. A. T. Wan Abdullah , K. Wichmann , M. Wing , S. Yamada , Y. Yamazaki , A. F. Żarnecki , O. Zenaiev

Measurement of prompt photons with associated jets in photoproduction at HERA

The photoproduction of prompt photons, together with an accompanying jet, has been studied in ep collisions at a centre-of-mass energy of 318 GeV with the ZEUS detector at HERA using an integrated luminosity of 77 pb-1. Cross sections were…

High Energy Physics - Experiment · Physics 2012-08-27 ZEUS Collaboration

Measurement of dijet cross sections for events with a leading neutron in photoproduction at HERA

Differential cross sections for dijet photoproduction in association with a leading neutron using the reaction e^+ + p --> e^+ + n + jet + jet + X_r have been measured with the ZEUS detector at HERA using an integrated luminosity of 6.4…

High Energy Physics - Experiment · Physics 2008-11-26 ZEUS Collaboration , J. Breitweg