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

Fuente: arXiv

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Auteurs principaux:	ZEUS Collaboration, Abt, I., Aggarwal, R., Aushev, V., Behnke, O., Bertolin, A., Bloch, I., Brock, I., Brook, N. H., Brugnera, R., Bruni, A., Bussey, P. J., Caldwell, A., Catterall, C. D., Chwastowski, J., Ciborowski, J., Ciesielski, R., Cooper-Sarkar, A. M., Corradi, M., Dementiev, R. K., Dusini, S., Ferrando, J., Foster, B., Gallo, E., Gangadharan, D., Garfagnini, A., Geiser, A., Grzelak, G., Gwenlan, C., Hochman, D., Jomhari, N. Z., Kadenko, I., Karshon, U., Kaur, P., Klanner, R., Klein, U., Korzhavina, I. A., Kovalchuk, N., Kuze, M., Levchenko, B. B., Levy, A., Löhr, B., Lohrmann, E., Longhin, A., Lorkowski, F., Lunghi, E., Makarenko, I., Malka, J., Masciocchi, S., Nagano, ^ K., Nam, J. D., Onishchuk, Yu., Paul, E., Pidhurskyi, I., Polini, A., Przybycień, M., Quintero, A., Ruspa, M., Schneekloth, U., Schörner-Sadenius, T., Selyuzhenkov, I., Shchedrolosiev, M., Shcheglova, L. M., Sherrill, N., Skillicorn, I. O., Słomiński, W., Solano, A., Stanco, L., Stefaniuk, N., Surrow, B., Tokushuku, K., Turkot, O., Tymieniecka, T., Verbytskyi, A., Abdullah, W. A. T. Wan, Wichmann, K., Wing, M., Yamada, S., Yamazaki, Y., Żarnecki, A. F., Zenaiev, O.
Format:	Preprint
Publié:	2024
Sujets:	High Energy Physics - Experiment
Accès en ligne:	Acceder al recurso
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_version_	1866929563762688000
author	ZEUS Collaboration Abt, I. Aggarwal, R. Aushev, V. Behnke, O. Bertolin, A. Bloch, I. Brock, I. Brook, N. H. Brugnera, R. Bruni, A. Bussey, P. J. Caldwell, A. Catterall, C. D. Chwastowski, J. Ciborowski, J. Ciesielski, R. Cooper-Sarkar, A. M. Corradi, M. Dementiev, R. K. Dusini, S. Ferrando, J. Foster, B. Gallo, E. Gangadharan, D. Garfagnini, A. Geiser, A. Grzelak, G. Gwenlan, C. Hochman, D. Jomhari, N. Z. Kadenko, I. Karshon, U. Kaur, P. Klanner, R. Klein, U. Korzhavina, I. A. Kovalchuk, N. Kuze, M. Levchenko, B. B. Levy, A. Löhr, B. Lohrmann, E. Longhin, A. Lorkowski, F. Lunghi, E. Makarenko, I. Malka, J. Masciocchi, S. Nagano, ^ K. Nam, J. D. Onishchuk, Yu. Paul, E. Pidhurskyi, I. Polini, A. Przybycień, M. Quintero, A. Ruspa, M. Schneekloth, U. Schörner-Sadenius, T. Selyuzhenkov, I. Shchedrolosiev, M. Shcheglova, L. M. Sherrill, N. Skillicorn, I. O. Słomiński, W. Solano, A. Stanco, L. Stefaniuk, N. Surrow, B. Tokushuku, K. Turkot, O. Tymieniecka, T. Verbytskyi, A. Abdullah, W. A. T. Wan Wichmann, K. Wing, M. Yamada, S. Yamazaki, Y. Żarnecki, A. F. Zenaiev, O.
author_facet	ZEUS Collaboration Abt, I. Aggarwal, R. Aushev, V. Behnke, O. Bertolin, A. Bloch, I. Brock, I. Brook, N. H. Brugnera, R. Bruni, A. Bussey, P. J. Caldwell, A. Catterall, C. D. Chwastowski, J. Ciborowski, J. Ciesielski, R. Cooper-Sarkar, A. M. Corradi, M. Dementiev, R. K. Dusini, S. Ferrando, J. Foster, B. Gallo, E. Gangadharan, D. Garfagnini, A. Geiser, A. Grzelak, G. Gwenlan, C. Hochman, D. Jomhari, N. Z. Kadenko, I. Karshon, U. Kaur, P. Klanner, R. Klein, U. Korzhavina, I. A. Kovalchuk, N. Kuze, M. Levchenko, B. B. Levy, A. Löhr, B. Lohrmann, E. Longhin, A. Lorkowski, F. Lunghi, E. Makarenko, I. Malka, J. Masciocchi, S. Nagano, ^ K. Nam, J. D. Onishchuk, Yu. Paul, E. Pidhurskyi, I. Polini, A. Przybycień, M. Quintero, A. Ruspa, M. Schneekloth, U. Schörner-Sadenius, T. Selyuzhenkov, I. Shchedrolosiev, M. Shcheglova, L. M. Sherrill, N. Skillicorn, I. O. Słomiński, W. Solano, A. Stanco, L. Stefaniuk, N. Surrow, B. Tokushuku, K. Turkot, O. Tymieniecka, T. Verbytskyi, A. Abdullah, W. A. T. Wan Wichmann, K. Wing, M. Yamada, S. Yamazaki, Y. Żarnecki, A. F. Zenaiev, O.
contents	The azimuthal correlation angle, $Δϕ$, between the scattered lepton and the leading jet in deep inelastic $e^{\pm}p$ scattering at HERA has been studied using data collected with the ZEUS detector at a centre-of-mass energy of $\sqrt{s} = 318 \;\mathrm{GeV}$, corresponding to an integrated luminosity of $326 \;\mathrm{pb}^{-1}$. A measurement of jet cross sections in the laboratory frame was made in a fiducial region corresponding to photon virtuality $10 \;\mathrm{GeV}^2 < Q^2 < 350 \;\mathrm{GeV}^2$, inelasticity $0.04 < y < 0.7$, outgoing lepton energy $E_e > 10 \;\mathrm{GeV}$, lepton polar angle $140^\circ < θ_e < 180^\circ$, jet transverse momentum $2.5 \;\mathrm{GeV} < p_\mathrm{T,jet} < 30 \;\mathrm{GeV}$, and jet pseudorapidity $-1.5 < η_\mathrm{jet} < 1.8$. Jets were reconstructed using the $k_\mathrm{T}$ algorithm with the radius parameter $R = 1$. The leading jet in an event is defined as the jet that carries the highest $p_\mathrm{T,jet}$. Differential cross sections, $dσ/dΔϕ$, were measured as a function of the azimuthal correlation angle in various ranges of leading-jet transverse momentum, photon virtuality and jet multiplicity. Perturbative calculations at $\mathcal{O}(α_{s}^2)$ accuracy successfully describe the data within the fiducial region, although a lower level of agreement is observed near $Δϕ\rightarrow π$ for events with high jet multiplicity, due to limitations of the perturbative approach in describing soft phenomena in QCD. The data are equally well described by Monte Carlo predictions that supplement leading-order matrix elements with parton showering.
format	Preprint
id	arxiv_https___arxiv_org_abs_2406_01430
institution	arXiv
publishDate	2024
record_format	arxiv
spellingShingle	The azimuthal correlation between the leading jet and the scattered lepton in deep inelastic scattering at HERA ZEUS Collaboration Abt, I. Aggarwal, R. Aushev, V. Behnke, O. Bertolin, A. Bloch, I. Brock, I. Brook, N. H. Brugnera, R. Bruni, A. Bussey, P. J. Caldwell, A. Catterall, C. D. Chwastowski, J. Ciborowski, J. Ciesielski, R. Cooper-Sarkar, A. M. Corradi, M. Dementiev, R. K. Dusini, S. Ferrando, J. Foster, B. Gallo, E. Gangadharan, D. Garfagnini, A. Geiser, A. Grzelak, G. Gwenlan, C. Hochman, D. Jomhari, N. Z. Kadenko, I. Karshon, U. Kaur, P. Klanner, R. Klein, U. Korzhavina, I. A. Kovalchuk, N. Kuze, M. Levchenko, B. B. Levy, A. Löhr, B. Lohrmann, E. Longhin, A. Lorkowski, F. Lunghi, E. Makarenko, I. Malka, J. Masciocchi, S. Nagano, ^ K. Nam, J. D. Onishchuk, Yu. Paul, E. Pidhurskyi, I. Polini, A. Przybycień, M. Quintero, A. Ruspa, M. Schneekloth, U. Schörner-Sadenius, T. Selyuzhenkov, I. Shchedrolosiev, M. Shcheglova, L. M. Sherrill, N. Skillicorn, I. O. Słomiński, W. Solano, A. Stanco, L. Stefaniuk, N. Surrow, B. Tokushuku, K. Turkot, O. Tymieniecka, T. Verbytskyi, A. Abdullah, W. A. T. Wan Wichmann, K. Wing, M. Yamada, S. Yamazaki, Y. Żarnecki, A. F. Zenaiev, O. High Energy Physics - Experiment The azimuthal correlation angle, $Δϕ$, between the scattered lepton and the leading jet in deep inelastic $e^{\pm}p$ scattering at HERA has been studied using data collected with the ZEUS detector at a centre-of-mass energy of $\sqrt{s} = 318 \;\mathrm{GeV}$, corresponding to an integrated luminosity of $326 \;\mathrm{pb}^{-1}$. A measurement of jet cross sections in the laboratory frame was made in a fiducial region corresponding to photon virtuality $10 \;\mathrm{GeV}^2 < Q^2 < 350 \;\mathrm{GeV}^2$, inelasticity $0.04 < y < 0.7$, outgoing lepton energy $E_e > 10 \;\mathrm{GeV}$, lepton polar angle $140^\circ < θ_e < 180^\circ$, jet transverse momentum $2.5 \;\mathrm{GeV} < p_\mathrm{T,jet} < 30 \;\mathrm{GeV}$, and jet pseudorapidity $-1.5 < η_\mathrm{jet} < 1.8$. Jets were reconstructed using the $k_\mathrm{T}$ algorithm with the radius parameter $R = 1$. The leading jet in an event is defined as the jet that carries the highest $p_\mathrm{T,jet}$. Differential cross sections, $dσ/dΔϕ$, were measured as a function of the azimuthal correlation angle in various ranges of leading-jet transverse momentum, photon virtuality and jet multiplicity. Perturbative calculations at $\mathcal{O}(α_{s}^2)$ accuracy successfully describe the data within the fiducial region, although a lower level of agreement is observed near $Δϕ\rightarrow π$ for events with high jet multiplicity, due to limitations of the perturbative approach in describing soft phenomena in QCD. The data are equally well described by Monte Carlo predictions that supplement leading-order matrix elements with parton showering.
title	The azimuthal correlation between the leading jet and the scattered lepton in deep inelastic scattering at HERA
topic	High Energy Physics - Experiment
url	https://arxiv.org/abs/2406.01430