ZEUS results on the measurement and phenomenology of 
                
$F_2$
               at low x and low 
                
$Q^2$

Breitweg, J.; Chekanov, S.; Derrick, M.; Krakauer, D.; Magill, S.; Mikunas, D.; Musgrave, B.; Repond, J.; Stanek, R. W.; Talaga, R. L.; Yoshida, R.; Zhang, H.; Mattingly, M.C.K.; Abbiendi, G.; Anselmo, F.; Antonioli, P.; Bari, G.; Basile, M.; Bellagamba, L.; Boscherini, D.; Bruni, A.; Bruni, G.; Romeo, Giovanni; Castellini, G.; Cifarelli, L.; Cindolo, F.; Contin, A.; Coppola, N.; Corradi, M.; Pasquale, S. De; Giusti, P.; Iacobucci, G.; Laurenti, G.; Levi, G.; Margotti, A.; Massam, T.; Nania, R.; Palmonari, F.; Pesci, A.; Polini, A.; Sartorelli, G.; Garcia, Y. Zamora; Zichichi, A.; Amelung, C.; Bornheim, A.; Brock, I.; Coböken, K.; Crittenden, J.; Deffner, R.; Eckert, M.; Grothe, M.; Hartmann, H.; Héinloth, K.; Heinz, L.; Hilger, E.; Jakob, H.‐P.; Kappes, A.; Katz, U.; Kerger, R.; Paul, E.; Pfeiffer, Mark; Schnurbusch, H.; Weber, A.; Wieber, H.; Bailey, D.; Barret, O.; Cottingham, W. N.; Foster, B.; Hall-Wilton, R.; Heath, G. P.; Heath, H. F.; McFall, J.D.; Piccioni, David; Roff, D. G.; Scott, J.; Tapper, R. J.; Capua, M.; Iannotti, L.; Mastroberardino, A.; Schioppa, M.; Susinno, G.; Kim, J. Y.; Lee, J. H.; Lim, I. T.; Pac, M. Y.; Caldwell, A.; Cartiglia, N.; Jing, Z.; Liu, W.; Mellado, B.; Parsons, J. A.; Ritz, S.; Sampson, Scott E.; Sciulli, F.; Straub, P.B.; Zhu, Q. M.; Borzemski, P.; Chwastowski, J. J.; Eskreys, A.; Figiel, J.; Klimek, K.; Przybycień, M.; Zawiejski, L.; Adamczyk, L.; Bednarek, B.; Bukowy, M.; Czermak, A.; Jeleń, K.; Kisielewska, D.; Kowalski, T.; Przybycień, M.; Rulikowska-Zarȩbska, E.; Suszycki, L.; Zając, Józef; Duliński, Z.; Kotański, A.; Bauerdick, L. A. T.; Behrens, U.; Beier, H.; Bienlein, J. K.; Desler, K.; Drews, G.; Fricke, U.; Göebel, F.; Göttlicher, P.; Graciani, R.; Haas, T.; Hain, W.; Hartner, G.; Hasell, D.; Hebbel, K.; Johnson, K. F.; Kasemann, M.; Koch, W.; Kötz, U.; Kowalski, H.; Lindemann, Lars; Löhr, B.; Martínez, M.; Milewski, J.; Milite, M.; Monteiro, T.; Notz, D.; Pellegrino, A.; Pelucchi, F.; Piotrzkowski, K.; Rohde, M.; Roldán, J.; Ryan, J. J.; Saull, P. R. B.; Savin, A.A.; Schneekloth, U.; Schwarzer, O.; Selonke, F.; Sievers, Michael; Stonjek, S.; Surrow, B.; Tassi, E.; Westphal, Douglas L.; Wolf, Gy.; Wollmer, U.; Youngman, C.; Zeuner, Wolfram Dietrich; Burow, A. D.; Coldewey, C.; Grabosch, H. J.; Meyer, Andreas Bernhard; Schlenstedt, S.; Barbagli, G.; Gallo, E.; Pelfer, P. G.; Maccarrone, G.; Votano, L.; Bamberger, A.; Eisenhardt, S.; Markun, P.; Raach, H.; Trefzger, T.; Wölfle, S.; Bromley, J. T.; Brook, N. H.; Bussey, P.; Doyle, A. T.; Lee, S. W.; Macdonald, N.; McCance, Gavin; Saxon, D. H.; Sinclair, L.E.; Skillicorn, I. O.; Strickland, E.; Waugh, R.; Bohnet, I.; Gendner, N.; Holm, U.; Meyer-Larsen, A.; Salehi, H.; Wick, K.; Garfagnini, A.; Gialas, I.; Gladilin, L. K.; Kçira, D.; Klanner, R.; Lohrmann, E.; Poelz, G.; Zetsche, Frank; Bacon, T. C.; Butterworth, I.; Cole, J. E.; Howell, G.; Lamberti, Luciano; Long, K.; Miller, D. B.; Pavel, N.; Prinias, A.; Sedgbeer, J. K.; Sideris, D.; Walker, R. J.; Mallik, U.; Wang, S. M.; Wu, J.; Cloth, P.; Filges, D.; Ishii, T; Kuze, M.; Suzuki, I.; Tokushuku, K.; Yamada, S.; Yamauchi, K.; Yamazaki, Y.; Hong, S. J.; Lee, S. B.; Nam, S.; Park, S. K.; Lim, H.; Park, I. H.; Son, D. C.; Barreiro, F.; Fernández, J. P.; Garcı́a, G.; Glasman, C.; Hernández, J. M.; Hervás, L.; Labarga, L.; Peso, J. Del; Puga, J.; Redondo, I.; Terrón, J.; Trocóniz, Jorge F de; Corriveau, F.; Hanna, D.; Hartmann, J.; Murray, W. N.; Ochs, A.; Riveline, M.; Stairs, D. G.; St-Laurent, Marie; Tsurugai, T.; Bashkirov, V.; Dolgoshein, B. A.; Stifutkin, A.; Bashindzhagyan, G. L.; Ermolov, P.; Golubkov, Ya; Khein, L. A.; Korotkova, N.; Korzhavina, I. A.; Kuzmin, V. A.; Lukina, O. Yu.; Proskuryakov, A.S.; Shcheglova, L.M.; Solomin, A.; Zotkin, S. A.; Bokel, C.H.; Botje, M.; Brümmer, N.; Engelen, J.; Koffeman, E.; Kooijman, P.; Sighem, Ard van; Tiecke, H.; Tuning, N.; Verkerke, W.; Vossebeld, J. H.; Wiggers, L.; Wolf, E. de; Acosta, D.; Bylsma, B.; Durkin, L. S.; Gilmore, J.; Ginsburg, C. M.; Kim, C. L.; Ling, T. Y.; Nylander, P.; Romanowski, T. A.; Blaikley, H.E.; Cashmore, R. J.; Cooper-Sarkar, A. M.; Devenish, R. C. E.; Edmonds, J.K.; Große-Knetter, J.; Harnew, N.; Nath, C.; Noyes, V. A.; Quadt, A.; Ruske, O.; Tickner, James; Walczak, R.; Waters, D.; Bertolin, A.; Brugnera, R.; Carlin, R.; Corso, F. Dal; Dosselli, U.; Limentani, S.; Morandin, M.; Posocco, M.; Stančo, L.; Stroili, R.; Voci, C.; Oh, B.Y.; Okrasiński, J.R.; Toothacker, W. S.; Whitmore, J.; Iga, Y.; D’Agostini, G.; Marini, G.; Nigro, A.; Raso, M.; Hart, J. C.; McCubbin, N. A.; Shah, T.; Epperson, D.; Heusch, C. A.; Rahn, J.; Sadrozinski, H. F-W.; Seiden, A.; Wichmann, R.; Williams, D. C.; Abramowicz, H.; Briskin, G.; Dagan, S.; Kananov, S.; Levy, A.; Abe, T.; Fusayasu, T.; Inuzuka, M.; Nagano, K.; Umemori, Kensei; Yamashita, T.; Hamatsu, R.; Hirose, T.; Homma, K.; Kitamura, S.; Matsushita, T.; Nishimura, T.; Arneodo, M.; Cirio, R.; Costa, M.; Ferrero, M.; Maselli, S.; Monaco, V.; Peroni, C.; Petrucci, M. C.; Ruspa, M.; Sacchi, R.; Solano, A.; Staiano, A.; Dardo, M.; Bailey, D. C.; Fagerstroem, C.-P.; Galea, R.; Koop, T.; Levman, G.; Martin, J. F.; Orr, R. S.; Polenz, S.; Sabetfakhri, A.; Simmons, D.; Butterworth, J. M.; Catterall, C. D.; Hayes, M. E.; Heaphy, E.A.; Jones, T. W.; Lane, J.B.; Saunders, R. L.; Sutton, M. R.; Wing, M.; Ciborowski, J.; Grzelak, G.; Nowak, R. J.; Pawlak, J. M.; Pawlak, R.; Smalska, B.; Tymieniecka, T.; Wróblewski, Andrzej Kajetan; Zakrzewski, J.; Barnecki, A. F.; Adamus, M.; Deppe, O.; Eisenberg, Y.; Hochman, D.; Karshon, U.; Badgett, W.; Chapin, D.; Cross, R.; Foudas, C.; Mattingly, S. E.K.; Reeder, D.D.; Smith, W. H.; Vaiciulis, A.; Wildschek, T.; Wodarczyk, M.; Deshpande, A.; Dhawan, S. K.; Hughes, V. W.; Bhadra, S.; Frisken, W. R.; Khakzad, M.; Schmidke, W. B.

doi:10.1007/s100529901084

Cited by 77 publications

(85 citation statements)

References 17 publications

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Order By: Relevance

“…For Q 2 larger than 1 GeV 2 the HERA data on F 2 seems to be well described by DGLAP evolution. Parametrising F 2 ∼ Ax −λ at small x the effective intercept λ is observed to grow from 0.11 ± 0.02 at Q 2 = 0.3GeV 2 to 0.18±0.03 at Q 2 = 3.5GeV 2 , 0.31±0.02 at 35 GeV 2 and increases with increasing Q 2 [29,30,32]. The value 0.4 was found at the highest Q 2 motivating suggestions of a new hard pomeron [16,33].…”

Section: Fitting the High Energy Spin Asymmetrymentioning

confidence: 71%

“…The unpolarised total cross-section, σ tot = σ A + σ P , measurements from HERA were found to be well described by a combined Regge and Generalized Vector Meson Dominance (GVMD) motivated fit in the kinematics Q 2 < 0.65 GeV 2 and s ≥ 3GeV 2 [28][29][30]. The ZEUS Collaboration used the 4 parameter fit [28] σ γ * p tot (s,…”

Section: Fitting the High Energy Spin Asymmetrymentioning

confidence: 99%

See 1 more Smart Citation

Updating spin-dependent Regge intercepts

2018

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We use new high statistics data from CLAS and COMPASS on the nucleon's spin structure function at low Bjorken x and low virtuality, Q 2 < 0.5 GeV 2 , together with earlier measurements from the SLAC E-143, HERMES and GDH experiments to estimate the effective intercept(s) for spin dependent Regge theory. We find αa 1 = 0.31 ± 0.04 for the intercept describing the high-energy behaviour of spin dependent photoabsorption together with a new estimate for the high-energy part of the Gerasimov-Drell-Hearn sum-rule, −15 ± 2µb from photon-proton centre-of-mass energy greater than 2.5 GeV. Our value of αa 1 suggests QCD physics beyond a simple straight-line a1 trajectory.

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Section: Fitting the High Energy Spin Asymmetrymentioning

confidence: 71%

Section: Fitting the High Energy Spin Asymmetrymentioning

confidence: 99%

Updating spin-dependent Regge intercepts

2018

View full text Add to dashboard Cite

show abstract

“…These phenomena are related to modifications of the Pomeron kernel and the inclusion of multi-Pomeron exchange respectively. In reference [9] it has been done a remarkable comparison with F 2 (x, q 2 ) data for the proton obtained by the HERA Collaboration [11,12,13].…”

Section: Analysis Of the Results And Conclusionmentioning

confidence: 99%

“…The authors of reference [9] have found that the BPST kernel fits remarkably well the region where the four-momentum transfer q 2 of the virtual photon is large, and also it works surprisingly well for small values of q 2 , as low as q 2 = 0.1 (GeV/c) 2 . They fit their result for F 2 to the combined H1-ZEUS small-x data of the inclusive DIS cross sections measured by H1 and ZEUS Collaborations in neutral and charged current unpolarized e ± p scattering at HERA [11,12,13], in the range 0.1 (GeV/c) 2 ≤ q 2 ≤ 400 (GeV/c) 2 , and for 10 −6 ≤ x ≤ 10 −2 . For large q 2 conformal symmetry dominates, while near to the IR the hard-wall cut-off becomes important.…”

Section: Figurementioning

confidence: 91%

Deep inelastic scattering from polarized spin-1/2 hadrons at low x from string theory

Kovensky

Michalski

Schvellinger

2018

J. High Energ. Phys.

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We study polarized deep inelastic scattering of charged leptons from spin-1/2 hadrons at low values of the Bjorken parameter and large 't Hooft coupling in terms of the gauge/string theory duality. We calculate the structure functions from type IIB superstring theory scattering amplitudes. We discuss the role of the non-Abelian Chern-Simons term and the Pauli term from the five-dimensional SU(4) gauged supergravity. Furthermore, the exponentially small-x regime where Regge physics becomes important is analyzed in detail for the antisymmetric structure functions. In this case the holographic dual picture of the Pomeron exchange is realized by a Reggeized gauge field. We compare our results with experimental data of the proton antisymmetric structure function g 1 , obtaining a very good level of agreement.

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“…The BPST kernel was further improved subsequently [16,18], and applied to the analysis on structure functions in DIS at small x [22][23][24][25]. The most striking result may be that the nontrivial scale dependence of the Pomeron intercept, which were experimentally measured at HERA [29], was well reproduced with this kernel.…”

Section: Introductionmentioning

confidence: 99%

Total hadronic cross sections at high energies in holographic QCD

Watanabe

Huang

2019

Physics Letters B

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We present our analysis on high energy hadron-hadron scattering in the framework of the holographic QCD. Combining the Brower-Polchinski-Strassler-Tan Pomeron exchange kernel and gravitational form factors of the involved hadrons which are obtained by using the bottom-up AdS/QCD models in the five-dimensional AdS space, we calculate the total cross sections at high energies.We show that our calculations for the nucleon-nucleon scattering agree with the experimental data including the recent ones taken by the TOTEM collaboration at the LHC. The present framework is applicable to any high energy process, in which the strong interaction can be approximated by the Pomeron exchange. We present the results for the pion-nucleon and pion-pion scattering as examples, which can be obtained without any additional parameter because all the adjustable parameters are fixed via the analysis on the nucleon-nucleon scattering. The resulting total cross section ratios are σ πN tot /σ NN tot = 0.63 and σ ππ tot /σ NN tot = 0.45, respectively.

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ZEUS results on the measurement and phenomenology of $F_2$ at low x and low $Q^2$

Cited by 77 publications

References 17 publications

Updating spin-dependent Regge intercepts

Updating spin-dependent Regge intercepts

Deep inelastic scattering from polarized spin-1/2 hadrons at low x from string theory

Total hadronic cross sections at high energies in holographic QCD

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