The azimuthal correlation between the leading jet and the scattered lepton in deep inelastic scattering at HERA

Abstract The azimuthal correlation angle, $$\Delta \phi $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>Δ</mml:mi> <mml:mi>ϕ</mml:mi> </mml:mrow> </mml:math> , between the scattered lepton and the leading jet in deep inelastic $$e^{\pm }p$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msup> <mml:mi>e</mml:mi> <mml:mo>±</mml:mo> </mml:msup> <mml:mi>p</mml:mi> </mml:mrow> </mml:math> scattering at HERA has been studied using data collected with the ZEUS detector at a centre-of-mass energy of $$\sqrt{s} = 318 {\,\text {Ge}\hspace{-0.66666pt}\text {V}}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> <mml:mo>=</mml:mo> <mml:mn>318</mml:mn> <mml:mrow> <mml:mspace/> <mml:mtext>Ge</mml:mtext> <mml:mspace/> <mml:mtext>V</mml:mtext> </mml:mrow> </mml:mrow> </mml:math> , corresponding to an integrated luminosity of $$326 \,\text {pb}^{-1}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mn>326</mml:mn> <mml:mspace/> <mml:msup> <mml:mtext>pb</mml:mtext> <mml:mrow> <mml:mo>-</mml:mo> <mml:mn>1</mml:mn> </mml:mrow> </mml:msup> </mml:mrow> </mml:math> . A measurement of jet cross sections in the laboratory frame was made in a fiducial region corresponding to photon virtuality $$10 {\,\text {Ge}\hspace{-0.66666pt}\text {V}}^2&lt; Q^2 &lt; 350 {\,\text {Ge}\hspace{-0.66666pt}\text {V}}^2$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mn>10</mml:mn> <mml:msup> <mml:mrow> <mml:mspace/> <mml:mtext>Ge</mml:mtext> <mml:mspace/> <mml:mtext>V</mml:mtext> </mml:mrow> <mml:mn>2</mml:mn> </mml:msup> <mml:mo>&lt;</mml:mo> <mml:msup> <mml:mi>Q</mml:mi> <mml:mn>2</mml:mn> </mml:msup> <mml:mo>&lt;</mml:mo> <mml:mn>350</mml:mn> <mml:msup> <mml:mrow> <mml:mspace/> <mml:mtext>Ge</mml:mtext> <mml:mspace/> <mml:mtext>V</mml:mtext> </mml:mrow> <mml:mn>2</mml:mn> </mml:msup> </mml:mrow> </mml:math> , inelasticity $$0.04&lt; y &lt; 0.7$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mn>0.04</mml:mn> <mml:mo>&lt;</mml:mo> <mml:mi>y</mml:mi> <mml:mo>&lt;</mml:mo> <mml:mn>0.7</mml:mn> </mml:mrow> </mml:math> , outgoing lepton energy $$E_e &gt; 10 {\,\text {Ge}\hspace{-0.66666pt}\text {V}}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msub> <mml:mi>E</mml:mi> <mml:mi>e</mml:mi> </mml:msub> <mml:mo>&gt;</mml:mo> <mml:mn>10</mml:mn> <mml:mrow> <mml:mspace/> <mml:mtext>Ge</mml:mtext> <mml:mspace/> <mml:mtext>V</mml:mtext> </mml:mrow> </mml:mrow> </mml:math> , lepton polar angle $$140^\circ&lt; \theta _e &lt; 180^\circ $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msup> <mml:mn>140</mml:mn> <mml:mo>∘</mml:mo> </mml:msup> <mml:mo>&lt;</mml:mo> <mml:msub> <mml:mi>θ</mml:mi> <mml:mi>e</mml:mi> </mml:msub> <mml:mo>&lt;</mml:mo> <mml:msup> <mml:mn>180</mml:mn> <mml:mo>∘</mml:mo> </mml:msup> </mml:mrow> </mml:math> , jet transverse momentum $$2.5 {\,\text {Ge}\hspace{-0.66666pt}\text {V}}&lt; p_\textrm{T,jet} &lt; 30 {\,\text {Ge}\hspace{-0.66666pt}\text {V}}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mn>2.5</mml:mn> <mml:mrow> <mml:mspace/> <mml:mtext>Ge</mml:mtext> <mml:mspace/> <mml:mtext>V</mml:mtext> </mml:mrow> <mml:mo>&lt;</mml:mo> <mml:msub> <mml:mi>p</mml:mi> <mml:mtext>T,jet</mml:mtext> </mml:msub> <mml:mo>&lt;</mml:mo> <mml:mn>30</mml:mn> <mml:mrow> <mml:mspace/> <mml:mtext>Ge</mml:mtext> <mml:mspace/> <mml:mtext>V</mml:mtext> </mml:mrow> </mml:mrow> </mml:math> , and jet pseudorapidity $$-1.5&lt; \eta _\textrm{jet} &lt; 1.8$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mo>-</mml:mo> <mml:mn>1.5</mml:mn> <mml:mo>&lt;</mml:mo> <mml:msub> <mml:mi>η</mml:mi> <mml:mtext>jet</mml:mtext> </mml:msub> <mml:mo>&lt;</mml:mo> <mml:mn>1.8</mml:mn> </mml:mrow> </mml:math> . Jets were reconstructed using the $$k_\textrm{T}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msub> <mml:mi>k</mml:mi> <mml:mtext>T</mml:mtext> </mml:msub> </mml:math> algorithm with the radius parameter $$R = 1$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>R</mml:mi> <mml:mo>=</mml:mo> <mml:mn>1</mml:mn> </mml:mrow> </mml:math> . The leading jet in an event is defined as the jet that carries the highest $$p_\textrm{T,jet}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">

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The European Physical Journal C
Published
2024-12-29
DOI
https://doi.org/10.1140/epjc/s10052-024-13547-2
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1
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Particle physics theoretical and experimental studies
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article
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article

The azimuthal correlation between the leading jet and the scattered lepton in deep inelastic scattering at HERA

G. Grzelak, O. Turkot, M. Shchedrolosiev, A. Bertolin et al.
1 citations
The European Physical Journal C
Particle physics theoretical and experimental studies
0.66
article

The azimuthal correlation between the leading jet and the scattered lepton in deep inelastic scattering at HERA

G. Grzelak, O. Turkot, M. Shchedrolosiev, A. Bertolin, R. Klanner, J. Malka, R. Ciesielski, J. J. Chwastowski, Nathaniel Sherrill, І. Каденко, Y. Yamazaki, I. Selyuzhenkov, B. B. Levchenko, Olaf Behnke, Aleksander Filip Zarnecki, K. Tokushuku, S. Yamada, U. Schneekloth, M. Przybycień, M. Wing, V. Aushev, L.M. Shcheglova, J. Ferrando, R. Brugnera, W. Słomiński, N. H. Brook, S. Dusini, N. Kovalchuk, S. Masciocchi, M. Kuze, P. Kaur, A. Garfagnini, D. Hochman, D. R. Gangadharan, I. Pidhurskyi, Florian Lorkowski, J. Ciborowski, P. J. Bussey, A. M. Cooper-Sarkar, E. Gallo, Marta Ruspa, C. Gwenlan, A. Longhin, Enrico Lunghi, Y. Onishchuk, C. D. Catterall, R. Aggarwal, K. Nagano, L. Stančo, A. Caldwell, I. Abt, A. Levy, J. D. Nam, I. O. Skillicorn, U. Klein, I. Bloch, O. Zenaiev, M. V. Garzelli, E. Paul, B. Surrow, A. Solano, W. A. T. Wan Abdullah, K. Wichmann, A. Polini, N. Z. Jomhari, A. Bruni, N. Stefaniuk, Andrii Verbytskyi, I. Brock, T. Tymieniecka, A. Quintero, I. Makarenko, A. Geiser, R. K. Dementiev, U. Karshon, T. Schörner-Sadenius, I. A. Korzhavina, B. Löhr, M. Corradi, E. Lohrmann
article en
1 citations

Abstract

Abstract The azimuthal correlation angle, $$\Delta \phi $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>Δ</mml:mi> <mml:mi>ϕ</mml:mi> </mml:mrow> </mml:math> , between the scattered lepton and the leading jet in deep inelastic $$e^{\pm }p$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msup> <mml:mi>e</mml:mi> <mml:mo>±</mml:mo> </mml:msup> <mml:mi>p</mml:mi> </mml:mrow> </mml:math> scattering at HERA has been studied using data collected with the ZEUS detector at a centre-of-mass energy of $$\sqrt{s} = 318 {\,\text {Ge}\hspace{-0.66666pt}\text {V}}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msqrt> <mml:mi>s</mml:mi> </mml:msqrt> <mml:mo>=</mml:mo> <mml:mn>318</mml:mn> <mml:mrow> <mml:mspace/> <mml:mtext>Ge</mml:mtext> <mml:mspace/> <mml:mtext>V</mml:mtext> </mml:mrow> </mml:mrow> </mml:math> , corresponding to an integrated luminosity of $$326 \,\text {pb}^{-1}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mn>326</mml:mn> <mml:mspace/> <mml:msup> <mml:mtext>pb</mml:mtext> <mml:mrow> <mml:mo>-</mml:mo> <mml:mn>1</mml:mn> </mml:mrow> </mml:msup> </mml:mrow> </mml:math> . A measurement of jet cross sections in the laboratory frame was made in a fiducial region corresponding to photon virtuality $$10 {\,\text {Ge}\hspace{-0.66666pt}\text {V}}^2&lt; Q^2 &lt; 350 {\,\text {Ge}\hspace{-0.66666pt}\text {V}}^2$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mn>10</mml:mn> <mml:msup> <mml:mrow> <mml:mspace/> <mml:mtext>Ge</mml:mtext> <mml:mspace/> <mml:mtext>V</mml:mtext> </mml:mrow> <mml:mn>2</mml:mn> </mml:msup> <mml:mo>&lt;</mml:mo> <mml:msup> <mml:mi>Q</mml:mi> <mml:mn>2</mml:mn> </mml:msup> <mml:mo>&lt;</mml:mo> <mml:mn>350</mml:mn> <mml:msup> <mml:mrow> <mml:mspace/> <mml:mtext>Ge</mml:mtext> <mml:mspace/> <mml:mtext>V</mml:mtext> </mml:mrow> <mml:mn>2</mml:mn> </mml:msup> </mml:mrow> </mml:math> , inelasticity $$0.04&lt; y &lt; 0.7$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mn>0.04</mml:mn> <mml:mo>&lt;</mml:mo> <mml:mi>y</mml:mi> <mml:mo>&lt;</mml:mo> <mml:mn>0.7</mml:mn> </mml:mrow> </mml:math> , outgoing lepton energy $$E_e &gt; 10 {\,\text {Ge}\hspace{-0.66666pt}\text {V}}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msub> <mml:mi>E</mml:mi> <mml:mi>e</mml:mi> </mml:msub> <mml:mo>&gt;</mml:mo> <mml:mn>10</mml:mn> <mml:mrow> <mml:mspace/> <mml:mtext>Ge</mml:mtext> <mml:mspace/> <mml:mtext>V</mml:mtext> </mml:mrow> </mml:mrow> </mml:math> , lepton polar angle $$140^\circ&lt; \theta _e &lt; 180^\circ $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:msup> <mml:mn>140</mml:mn> <mml:mo>∘</mml:mo> </mml:msup> <mml:mo>&lt;</mml:mo> <mml:msub> <mml:mi>θ</mml:mi> <mml:mi>e</mml:mi> </mml:msub> <mml:mo>&lt;</mml:mo> <mml:msup> <mml:mn>180</mml:mn> <mml:mo>∘</mml:mo> </mml:msup> </mml:mrow> </mml:math> , jet transverse momentum $$2.5 {\,\text {Ge}\hspace{-0.66666pt}\text {V}}&lt; p_\textrm{T,jet} &lt; 30 {\,\text {Ge}\hspace{-0.66666pt}\text {V}}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mn>2.5</mml:mn> <mml:mrow> <mml:mspace/> <mml:mtext>Ge</mml:mtext> <mml:mspace/> <mml:mtext>V</mml:mtext> </mml:mrow> <mml:mo>&lt;</mml:mo> <mml:msub> <mml:mi>p</mml:mi> <mml:mtext>T,jet</mml:mtext> </mml:msub> <mml:mo>&lt;</mml:mo> <mml:mn>30</mml:mn> <mml:mrow> <mml:mspace/> <mml:mtext>Ge</mml:mtext> <mml:mspace/> <mml:mtext>V</mml:mtext> </mml:mrow> </mml:mrow> </mml:math> , and jet pseudorapidity $$-1.5&lt; \eta _\textrm{jet} &lt; 1.8$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mo>-</mml:mo> <mml:mn>1.5</mml:mn> <mml:mo>&lt;</mml:mo> <mml:msub> <mml:mi>η</mml:mi> <mml:mtext>jet</mml:mtext> </mml:msub> <mml:mo>&lt;</mml:mo> <mml:mn>1.8</mml:mn> </mml:mrow> </mml:math> . Jets were reconstructed using the $$k_\textrm{T}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msub> <mml:mi>k</mml:mi> <mml:mtext>T</mml:mtext> </mml:msub> </mml:math> algorithm with the radius parameter $$R = 1$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mi>R</mml:mi> <mml:mo>=</mml:mo> <mml:mn>1</mml:mn> </mml:mrow> </mml:math> . The leading jet in an event is defined as the jet that carries the highest $$p_\textrm{T,jet}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML">

The European Physical Journal CVol. 84(12)
Goethe University Frankfurt (DE), Tokyo Institute of Technology (JP), Università degli Studi del Piemonte Orientale “Amedeo Avogadro” (IT), University of Bonn (DE), High Energy Accelerator Research Organization (JP), University of Liverpool (GB), Universität Hamburg (DE), University of Sussex (GB), Tel Aviv University (IL), GSI Helmholtz Centre for Heavy Ion Research (DE), Taras Shevchenko National University of Kyiv (UA), York University (CA), University of Zurich (CH), Heidelberg University (DE), University School of Physical Education in Kraków (PL), Deutsches Elektronen-Synchrotron DESY (DE), Leverhulme Trust (GB), University of Malaya (MY), University of Łódź (PL), University of Oxford (GB), Max Planck Institute for Physics (DE), National Centre for Nuclear Research (PL), Istituto Nazionale di Fisica Nucleare, Sezione di Torino (IT), Istituto Nazionale di Fisica Nucleare, Sezione di Padova (IT), Institute of Nuclear Physics, Polish Academy of Sciences (PL), Indiana University Bloomington (US), Hamburg Institut (Germany) (DE), Istituto Nazionale di Fisica Nucleare, Sezione di Bologna (IT), Istituto Nazionale di Fisica Nucleare, Sezione di Roma I (IT), Institute of Particle and Nuclear Studies, University of Houston (US), University College London (GB), University of Warsaw (PL), University of Bath (GB), Weizmann Institute of Science (IL), Sant Longowal Institute of Engineering and Technology (IN), Kobe University (JP), Lancaster University (GB), AGH University of Krakow (PL), University of Glasgow (GB), Rockefeller University (US), Temple University (US), European X-Ray Free-Electron Laser (DE)
U.S. Department of Energy, Strong, Deutsche Forschungsgemeinschaft, Ministry of Education, Culture, Sports, Science and Technology, Bundesministerium für Bildung und Forschung, Office of Science, Natural Sciences and Engineering Research Council of Canada, Science and Technology Facilities Council, Deutsches Elektronen-Synchrotron, Nuclear Physics
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Particle physics theoretical and experimental studies
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