Measurement of neutral current<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>e</mml:mi></mml:mrow><mml:mrow><mml:mo>±</mml:mo></mml:mrow></mml:msup><mml:mi>p</mml:mi></mml:mrow></mml:math>cross sections at high Bjorken<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>x</mml:mi></mml:math>with the ZEUS detector

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

doi:10.1103/physrevd.89.072007

Cited by 14 publications

(32 citation statements)

References 60 publications

(42 reference statements)

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“…The individual H1 and ZEUS measurements used in the combination were published previously in Refs. [12][13][14][15][16][17][18][19] and [20][21][22][23][24][25][26][27][28][29][30][31][32][33]. The two collaborations employed different experimental techniques and used different detectors and methods for kinematic reconstruction.…”

Section: Introductionmentioning

confidence: 99%

CTEQ-TEA parton distribution functions and HERA Run I and II combined data

et al. 2017

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We analyze the impact of the recent HERA run I+II combination of inclusive deep inelastic scattering cross-section data on the CT14 global analysis of PDFs. New PDFs at NLO and NNLO, called CT14HERA2, are obtained by a refit of the CT14 data ensembles, in which the HERA run I combined measurements are replaced by the new HERA run I+II combination. The CT14 functional parametrization of PDFs is flexible enough to allow good descriptions of different flavor combinations, so we use the same parametrization for CT14HERA2 but with an additional shape parameter for describing the strange quark PDF. We find that the HERA I+II data can be fit reasonably well, and both CT14 and CT14HERA2 PDFs can describe equally well the non-HERA data included in our global analysis. Because the CT14 and CT14HERA2 PDFs agree well within the PDF errors, we continue to recommend CT14 PDFs for the analysis of LHC Run 2 experiments.

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Section: Introductionmentioning

confidence: 99%

CTEQ-TEA parton distribution functions and HERA Run I and II combined data

et al. 2017

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“…Parton densities in hadrons play significant roles in understanding standard model processes as well as in the predictions for such processes at accelerators. The particle physics community have been so far successfully able to determine the global fits for parton distribution functions from various experiments in the Relativistic Heavy Ion Collider (RHIC) [1], CERN's Large Hadron Collider (LHC) [2][3][4], ZEUS [5] at HERA. One of the important and interesting aspects of Quantum Chromodynamics (QCD) is to determine the parton density at very small momentum fraction x, where x is also known as the Bjorken variable.…”

Section: Introductionmentioning

confidence: 99%

“…So far there have been indirect approaches in determining the gluon distribution by probing electron into proton and thus by measuring the proton structure function F 2 (x, Q 2 ), where Q 2 is the four momentum transferred squared or virtuality of the exchanged virtual photon, H1 [13] and ZEUS [5] at HERA made us being able to extract information about the gluon distributions in the formerly unexplored region of x and Q 2 . This method is however, indirect because at small-x F 2 (x, Q 2 ) actually probes the sea quark distribution, which are related via the coupled QCD evolution equations to the gluon distribution.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Effects in Gluon Distribution Predicted by GLR-MQ Evolution Equation at Next-to-leading Order in LHC Data

2017

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In this work we have solved the nonlinear GLR-MQ evolution equation upto next-to-leading order (NLO) by considering NLO terms of the gluon-gluon splitting functions and running coupling constant α s (Q 2 ). Here, we have incorporated a Regge-like behaviour of gluon distribution in order to obtain a solution of the GLR-MQ equation in the range of 5GeV 2 ≤ Q 2 ≤ 25GeV 2 . We have studied the Q 2 evolution of the gluon distribution function G(x, Q 2 ) and its nonlinear effects at small-x. It can be observed from our analysis that the nonlinearities increase with decrease in the correlation radius R of two interacting gluons, as expected. We have compared our result of G(x, Q 2 ) as Q 2 increases and x decreases, for two different values of R, viz. R= 2 GeV −1 and 5 GeV −1 . We have also checked the sensitivity of the Regge intercept λ G on our results. We compare our computed results with those obtained by the global analysis to parton distribution functions (PDFs) by various collaborations where LHC data have been included viz. PDF4LHC15, NNPDF3.0, ABM12 and CT14. Besides we have also shown comparison of our results with HERA PDF data viz. HERAPDF15.

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“…This facilitates detailed studies of electroweak (EW) effects. Recently, the ZEUS collaboration published a combined QCD and electroweak analysis [3] exploiting the ZEUS neutral current (NC) and charged current (CC) e + p and e − p inclusive cross sections for polarised beams [4][5][6][7]. For the analysis presented here, cross sections published by the H1 collaboration [8] for polarised beams were also considered.…”

Section: Introductionmentioning

confidence: 99%