First measurement of the deep-inelastic structure of proton diffraction

Ahmed, T.; Aïd, S.; Akhundov, A.A.; Andreev, V.; Andrieu, Bernard; Appuhn, R. D.; Arpagaus, M.; Babaev, A.; Baehr, J.; Bán, J.; Baranov, P.; Barrelet, E.; Bartel, W.; Barth, M.; Bassler, U.; Beck, H. P.; Behrend, H. J.; Belousov, A.; Berger, Ch.; Bergstein, H.; Bernardi, G.; Bernet, R.; Bertrand-Coremans, G.; Besançon, M.; Beyer, R.; Bizot, J.C.; Blobel, V.; Borras, K.; Botterweck, F.; Boudry, V.; Braemer, A.; Brasse, F.W.; Braunschweig, W.; Brisson, V.; Bruncko, D.; Brune, C. R.; Buchholz, R.; Buengener, L.; Buerger, J.; Bsser, F W.; Buniatian, A.; Bürke, S.; Burton, M. J.; Buschhorn, G.; Campbell, A.; Carli, T.; Charles, F.; Clarke, D.; Clegg, A.B.; Clerbaux, B.; Colombo, M.; Contreras, J. G.; Cormack, C. M.; Coughlan, J. A.; Courau, A.; Coutures, C.; Cozzika, G.; Criegee, L.; Cussans, D.; Cvach, J.; Dagoret, S.; Dainton, J. B.; Danilov, M.; Dau, W.D.; Daum, K.; David, M.; Deffur, E.; Delcourt, B.; Buono, L. Del; Roeck, A. De; Wolf, E. A. De; Nezza, P. Di; Dollfus, C.; Dowell, J. D.; Dreis, H. B.; Droutskoi, A.; Duboc, J.; Dllmann, D.; Dnger, O.; Duhm, H.H.; Ebert, J.; Ebert, T. R.; Eckerlin, G.; Efremenko, V.; Egli, S.; Erlichmann, H.; Eichenberger, S.; Eichler, R.; Eisele, F.; Eisenhandler, E.; Ellison, R. J.; Elsen, E.; Erdmann, M.; Erdmann, W.; Evrard, E.; Favart, L.; Fedotov, A.; Feeken, D.; Felst, R.; Feltesse, J.; Ferencei, J.; Ferrarotto, F.; Flamm, K.; Fleischer, M.; Flieser, M.; Flgge, G.; Fomenko, A.; Fominykh, B.; Forbush, M.; Formnek, J.; Foster, J. M.; Franke, G.; Fretwurst, E.; Gabathuler, E.; Gabathuler, K.; Gamerdinger, K.; Garvey, J.; Gayler, J.; Gebauer, M.; Gellrich, A.; Genzel, H.; Gerhards, R.; Goerlach, U.; Grlich, L.; Gogitidze, N.; Goldberg, M.; Goldner, D.; González-Pineiro, B.; Gorelov, I.; Goritchev, P.; Grab, C.; Grssler, H.; Grssler, R.; Greenshaw, T.; Grindhammer, G.; Gruber, A.; Grüber, C.; Haack, J.; Haidt, D.; Hajduk, L.; Hamon, O.; Hampel, Matías Rolf; Hanlon, E. M.; Hapke, M.; Haynes, W.J.; Heatherington, J.; Heinzelmann, G.; Henderson, R. C. W.; Henschel, H.; Herynek, I.; Heß, M.; Hildesheim, W.; Hill, P.; Hiller, K. H.; Hilton, C.D.; Hladký, J.; Hoeger, K. C.; Hppner, M.; Horisberger, R.; Hudgson, V. L.; Huet, Ph.; Htte, M.; Hufnagel, H.; Ibbotson, M.; Itterbeck, H.; Jabiol, M. A.; Jachołkowska, A.; Jacobsson, C.; Jaffré, M.; Janoth, J.; Jansen, Thomas L. C.; Jnsson, L.; Johannsen, K.; Johnson, Denis; Johnson, L.; Jung, H.; Kalmus, P. I. P.; Kant, D.; Kaschowitz, R.; Kasselmann, P.; Kathage, U.; Katzy, J.; Kaufmann, H. H.; Kazarian, Shahé S.; Kenyon, I. R.; Kermiche, S.; Keuker, C.; Kiesling, C.; Klein, M.; Kleinwort, C.; Knies, G.; Ko, W.; Khler, T.; Khne, J.; Kolanoski, H.; Kole, F.; Kolya, S. D.; Korbel, V.; Korn, M.; Kostka, P.; Kotelnikov, S.K.; Krmerkmper, T.; Krasny, M. W.; Krehbiel, H.; Krcker, D.; Krger, U P.; Krner-Marquis, U.; Kubenka, J. P.; Kster, H.; Kuhlen, M.; Kurča, T.; Kurzhfer, J.; Кузник, Б. И.; Lacour, D.; Lamarche, F.; Lander, R.; Landon, M. P. J.; Lange, W.; Lanius, P.; Laporte, J. F.; Lebedev, A.; Leverenz, C.; Levonian, S.; Ley, Ch.; Lindner, A.; Lindstrm, G.; Linsel, F.; Lipiński, J.; List, B.; Loch, P.; Lohmander, H.; Lpez, G C.; Lubimov, V.; Lke, D.; Magnussen, N.; Malinovskii, E. I.; Mani, S.; Maraček, R.; Marage, P.; Marks, J.; Marshall, R.; Martens, J.; Martin, R.; Martyn, H. U.; Martyniak, J.; Masson, S.; Mavroidis, A.; Maxfield, S. J.; McMahon, S. J.; Mehta, A.; Meier, K.; Mercer, D.; Merz, T.; Meyer, Chris; Meyer, H.; Meyer, J.; Mikocki, S.; Milstead, D.; Moreau, F.; Morris, J. V.; Mroczko, E.; Mller, G.; Mller, K.; Murn, P.; Nagovitsin, V.; Nahnhauer, R.; Naroska, B.; Naumann, T.; Newman, P. R.; Newton, D.; Neyret, D.; Nguyen, H. K.; Nicholls, T. C.; Niebergall, F.; Niebuhr, C.; Nisius, R.; Nowak, G.; Noyes, G. W.; Nyberg-Werther, M.; Oakden, M.; Oberlack, H.; Obrock, U.; Olsson, J. E.; Panaro, E.; Panitch, A.; Pascaud, C.; Patel, G. D.; Peppel, E.; Prez, E.; Phillips, J. P.; Pichler, Ch.; Pitzl, D.; Pope, G.; Prell, S.; Prosi, R.; Rdel, G.; Raupach, F.; Reimer, P.; Reinshagen, S.; Ribarics, P.; Rick, H.; Riech, V.; Riedlberger, J.; Rieß, S.; Rietz, M.; Rizvi, E.; Robertson, S.; Robmann, P.; Roloff, H. E.; Roosen, R.; Rosenbauer, K.; Rostovtsev, A.; Rouse, F.; Royon, C.; Rter, K.; Rusakov, S. V.; Rybicki, K.; Ryłko, R.; Sahlmann, N.; Snchez, E.; Sankey, D. P. C.; Savitsky, M.; Schacht, P.; Schiek, S.; Schleper, P.; Schlippe, W. von; Schmidt, C.; Schmidt, D.; Schmidt, G.; Schning, A.; Schrder, V.; Schuhmann, E.; Schwab, B.; Schwind, A.; Seehausen, U.; Sefkow, F.; Seidel, M.; Sell, Raivo; Semenov, A.; Shekelyan, V.; Shevyakov, I.; Shooshtari, H.; Shtarkov, L. N.; Siegmon, G.; Siewert, U.; Sirois, Y.; Skillicorn, I. O.; Smirnov, P.; Smith, J.; Solov’ev, Yu. V.; Spiekermann, J.; Spitzer, H.; Starosta, R.; Steenbock, M.; Steffen, P.; Steinberg, R.; Stella, B.; Stephens, K.; Stier, J.; Stiewe, J.; Stsslein, U.; Strachota, J.; Straumann, U.; Struczinski, W.; Sutton, J. P.; Tapprogge, S.; Taylor, Richard E.; Chernyshov, V. N.; Thiebaux, C.; Thompson, G.; Trul, P.; Turnau, J.; Tutas, J.; Uelkes, P.; Usik, A.; Valkr, S.; Valkrov, A.; Vallée, C.; Esch, Patrick van; Mechelen, P. Van; Vartapetian, A.; Vazdik, Y.; Vecko, M.; Verrecchia, P.; Villet, G.; Wacker, K.; Wagener, Aurélie; Wagener, M.; Walker, I. W.; Walther, A.; Weber, G.; Weber, M.; Wegener, D.; Wegner, A.; Wellisch, H. P.; West, L.R.; Willard, S.; Winde, M.; Winter, G. G.; Wright, A.E.; Wnsch, E.; Wulff, N.; Yiou, T. P.; Zcek, J.; Zarbock, D.; Zhang, Zhen; Zhokin, A.; Zimmer, M.; Zimmermann, W.; Zomer, F.; Zuber, Κ.

doi:10.1016/0370-2693(95)00279-t

Cited by 180 publications

(73 citation statements)

References 49 publications

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“…For processes with a hard scale, a parton structure of the Pomeron may be considered [5]. With the Pomeron flux given by Regge phenomenology, the HERA data on diffractive deep inelastic scattering can be well described by fitting parton density functions in the Pomeron [6,7]. However, applying exactly the same model for pp gives a too large cross section for diffractive hard processes.…”

Section: Introductionmentioning

confidence: 99%

Soft color interactions and diffractive hard scattering at the Fermilab Tevatron

2001

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An improved understanding of nonperturbative QCD can be obtained by the recently developed soft color interaction models. Their essence is the variation of color string-field topologies, giving a unified description of final states in high energy interactions, e.g., diffractive and nondiffractive events in ep and pp. Here we present a detailed study of such models (the soft color interaction model and the generalized area law model) applied to pp, considering also the general problem of the underlying event including beam particle remnants. With models tuned to HERA ep data, we find a good description also of Tevatron data on production of W, beauty and jets in diffractive events defined either by leading antiprotons or by one or two rapidity gaps in the forward or backward regions. We also give predictions for diffractive J/ψ production where the soft exchange mechanism produces both a gap and a color singlet cc state in the same event. This soft color interaction approach is also compared with Pomeron-based models for diffraction, and some possibilities to experimentally discriminate between these different approaches are discussed.12.38.Lg, 12.38.Aw

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Section: Introductionmentioning

confidence: 99%

Soft color interactions and diffractive hard scattering at the Fermilab Tevatron

2001

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“…In a previous Letter [1], we reported a measurement of the structure function of the antiproton extracted from dijet events produced in single diffractive (SD)pp collisions at p s 1800 GeV. Two striking features were noted: (a) the SD structure function rises relative to the nondiffractive (ND) as x-Bjorken decreases and (b) it differs from the corresponding structure function of the proton extracted by the H1 Collaboration from measurements of diffractive deep inelastic scattering performed at HERA [2] in both x dependence and normalization. The Fermilab Tevatron to HERA relative normalization was found to be of O ͑0.1͒, confirming our earlier results based on diffractive W, dijet, and b-quark production rates [3].…”

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confidence: 96%

Dijet Production by Double Pomeron Exchange at the Fermilab Tevatron

Affolder¹,

Akimoto²,

Akopian³

et al. 2000

Phys. Rev. Lett.

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We report the first observation of dijet events with a double Pomeron exchange topology produced in pp collisions at s√=1800GeV. The events are characterized by a leading antiproton, two jets in the central pseudorapidity region, and a large rapidity gap on the outgoing proton side. We present results on jet kinematics and production rates, compare them with corresponding results from single diffractive and inclusive dijet production, and test factorization

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“…The diffractive parton densities (the primary non-perturbative quantities in hard diffraction) obey exactly the same DGLAP evolution equations as ordinary parton densities, and have been extracted from HERA data on DDIS and on diffractive photonproduction of jets [16]. This factorization theorem also establishes the universality of the diffractive parton distrubutions for those processes to which the theorem applies, hence justifies, from fundamental principles, the analysis of ZEUS and H1 Collaboration [6,5] on hard diffraction, provided the term " Pomeron " used in these analyses is as a label for a particular kind of parametrization for diffractive parton densities, and an indication of the vacuum quantum numbers to be exchanged. In the light of hard diffractive factorization proven by Collins [13], the Ingelman-Schlein model for hard diffraction assumed further the factorization of diffractive parton densities into a universal Pomeron flux and a Pomeron parton densities, but such further factorization is unjustifiable.…”

Section: Introductionmentioning

confidence: 75%

“…Events containing rapidity gap and jets were first observed by UA8 Collaboration at CERN [3], opening the field of hard diffraction. The hard diffraction is also observed and studied by various experiments [4][5][6][7][8]. Although it is still difficult to understand the soft diffractive scattering in the framework of QCD, much progresses in understanding the nature of hard diffraction are made in the light of great theoritical and experimental efforts [9].…”

Section: Introductionmentioning

confidence: 99%

$ J/\psi +{\mathrm{jet}} $ diffractive production in the direct photon process at HERA

Hong-an

Yan³

et al. 2000

Eur. Phys. J. C

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We present a study of J/ψ + jet diffractive production in the direct photon process at HERA based on the factorization theorem for lepton-induced hard diffractive scattering and the factorization formalism of the nonrelativistic QCD (NRQCD) for quarkonia production. Using the diffractive gluon distribution function extracted from HERA data on diffractive deep inelastic scattering and diffractive dijet photon production, we show that this process can be studied at HERA with present integrated luminosity, and can give valuable insights in the color-octet mechanism for heavy quarkonia production. PACS number(s): 12.40Nn, 13.85.Ni, 14.40.Gx

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First measurement of the deep-inelastic structure of proton diffraction

Cited by 180 publications

References 49 publications

Soft color interactions and diffractive hard scattering at the Fermilab Tevatron

Soft color interactions and diffractive hard scattering at the Fermilab Tevatron

Dijet Production by Double Pomeron Exchange at the Fermilab Tevatron

$ J/\psi +{\mathrm{jet}} $ diffractive production in the direct photon process at HERA

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