Measurement of the cross section for production of two isolated prompt photons in<i>pp¯</i>collisions at √<i>s</i>=1.8 TeV

Abe, F.; Albrow, M.; Amidei, D.; Anway-Wiese, C.; Apollinari, G.; Ataç, M.; Auchincloss, P.; Azzi, P.; Baden, A.; Bacchetta, N.; Badgett, W.; Bailey, M. W.; Bamberger, A.; Barbaro, P. de; Barbaro‐Galtieri, A.; Barnes, V. E.; Barnett, B. A.; Bauer, G.; Baumann, Thomas; Bedeschi, F.; Behrends, S.; Belforte, S.; Bellettini, G.; Bellinger, J.; Benjamin, D.; Benlloch, J.; Bensinger, J. R.; Beretvas, A.; Berge, J. P.; Bertolucci, S.; Biery, K.; Bhadra, S.; Binkley, M.; Bisello, D.; Blair, R. E.; Blocker, C.; Bodek, A.; Bolognesi, V.; Booth, A. W.; Boswell, C.; Brandenburg, G.; Brown, D. N.; Buckley-Geer, E.; Budd, H. S.; Busetto, G.; Byon-Wagner, A.; Byrum, K. L.; Campagnari, C.; Campbell, M.; Caner, A.; Carey, Robert M.; Carithers, W.; Carlsmith, D.; Carroll, J. T.; Cashmore, R. J.; Castro, A.; Cervelli, F.; Chadwick, K.; Chapman, J.; Chiarelli, G.; Chinowsky, W.; Cihangir, S.; Clark, A.; Cobal, M.; Connor, D.; Contreras, M.; Cooper, J.; Cordelli, M.; Crane, D.; Cunningham, J. D.; Day, C.; DeJongh, F.; Dell’Agnello, S.; Dell’Orso, M.; Demortier, L.; Denby, B.; Derwent, P. F.; Devlin, T.; DiBitonto, D.; Dickson, M.; Drucker, R. B.; Einsweiler, K.; Elias, J. E.; Ely, R.; Eno, S. C.; Errede, S.; Etchegoyen, A.; Farhat, B.; Feldman, G. J.; Flaugher, B.; Foster, G. W.; Franklin, M.; Freeman, J.; Frisch, H.; Fuess, T. A.; Fukui, Y.; Garfinkel, A. F.; Gauthier, A.; Geer, S.; Gerdes, D. W.; Giannetti, P.; Giokaris, N.; Giromini, P.; Gladney, L.; Gold, M.; Gonzalez, J. Suarez; Goulianos, K.; Grassmann, H.; Grieco, G.; Grindley, R.; Grosso-Pilcher, C.; Haber, C.; Hahn, S. R.; Handler, R.; Hara, K.; Harral, B.; Harris, R. M.; Hauger, S. A.; Hauser, J.; Hawk, C.; Hessing, T. L.; Hollebeek, R. J.; Holloway, L.; Hong, S. J.; Houk, G.; Hu, P.; Hubbard, B.; Huffman, B. T.; Hughes, R. E.; Hurst, P.; Huth, J.; Hylen, J.; Incagli, M.; Ino, T.; Iso, H.; Jensen, H.; Jessop, C.; Johnson, R. P.; Joshi, U.; Kadel, R. W.; Kamon, T.; Kanda, S.; Kardelis, D. A.; Karliner, I.; Kearns, E.; Keeble, L.; Kephart, R.; Kesten, P.; Keup, R. M.; Keutelian, H.; Kim, D.; Kim, S. B.; Kim, S. H.; Kim, Y. K.; Kirsch, L.; Kondo, K.; Königsberg, J.; Kordas, K.; Kovacs, E.; Krasberg, M.; Kuhlmann, S.; Kuns, E.; Laasanen, A. T.; Lammel, S.; Lamoureux, J. I.; Leone, S.; Lewis, J. D.; Li, W.; Limon, P.; Lindgren, M.; Liss, T. M.; Lockyer, N. S.; Loreti, M.; Low, E. H.; Lucchesi, D.; Luchini, C. B.; Lukens, P.; Maas, P.; Maeshima, K.; Mangano, M.; Marriner, J. P.; Mariotti, M.; Markeloff, R.; Markosky, L. A.; Mattingly, R.; McIntyre, P.; Menzione, A.; Meschi, E.; Meyer, T. C.; Mikamo, S.; Miller, Michael L.; Mimashi, T.; Miscetti, S.; Mishina, M.; Miyashita, S.; Morita, Y.; Moulding, S.; Muêller, J.; Mukherjee, A.; Müller, Th.; Nakae, L. F.; Nakano, I.; Nelson, Charles A.; Neuberger, D.; Newman-Holmes, C.; Ng, J. S. T.; Ninomiya, M.; Nodulman, L.; Ogawa, S.; Paoletti, R.; Papadimitriou, V.; Para, A.; Paré, E.; Park, Sung Keun; Patrick, J.; Pauletta, G.; Pescara, L.; Phillips, T. J.; Ptohos, F.; Plunkett, R.; Pondrom, L.; Proudfoot, J.; Punzi, G.; Quarrie, D. R.; Ragan, K.; Redlinger, G.; Rhoades, J.; Roach, M.; Rimondi, F.; Ristori, L.; Robertson, W. J.; Rodrigo, T.; Rohaly, T.; Roodman, A.; Sakumoto, W. K.; Sansoni, A.; Sard, R. D.; Savoy-Navarro, A.; Scarpine, V.; Schlabach, P.; Schmidt, E. E.; Schneider, O.; Schub, M. H.; Schwitters, R. F.; Scribano, A.; Segler, S.; Seiya, Y.; Sganos, G.; Shapiro, M.; Shaw, N. M.; Sheaff, M.; Shochet, M. J.; Siegrist, J.; Sill, A.; Sinervo, P.; Skarha, J.; Sliwa, K.; Smith, D.; Snider, F. D.; Song, L.; Song, T.; Spahn, M.; Spies, A.; Sphicas, P.; Denis, R. St.; Stančo, L.; Stefanini, A.; Sullivan, G. W.; Sumorok, K.; Swartz, R. L.; Takano, Mikio; Takikawa, K.; Tarem, S.; Tartarelli, G. F.; Tether, S.; Theriot, D.; Timko, M.; Tipton, P.; Tkaczyk, S.; Tollestrup, A.; Tonnison, J.; Trischuk, W.; Tsay, Y.; Tseng, J.; Turini, N.; Ukegawa, F.; Underwood, D. G.; Vejcik, S.; Vidal, R.; Wagner, R. G.; Wagner, R. L.; Wainer, N.; Walker, R.; Walsh, J.; Watts, G.; Watts, T.; Webb, R.; Wendt, C.; Wenzel, H.; Wester, W. C.; Westhusing, T.; White, S. N.; Wicklund, A. B.; Wicklund, E.; Williams, H. H.; Winer, B. L.; Wolinski, J.; Wu, D. Y.; Wyss, J.; Yagil, A.; Yasuoka, K.; Ye, Y.; Yeh, G. P.; Yi, C.; Yoh, J.; Yokoyama, Masaru; Yun, J. C.; Zanetti, A.; Zetti, F.; Zhang, S.; Zhang, W.; Zucchelli, S.

doi:10.1103/physrevlett.70.2232

Cited by 35 publications

(17 citation statements)

References 17 publications

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“…For candidates above 35 GeV in ET the preshower pulseheight is used instead of the lateral profile measured at shower maximum to distinguish between background and photons (4). The results for the 12.8 pb-' luminosity 1992-1993 data set is compared to the data from the 1988-1989 run (1). Both data sets are reasonably consistent with the NLO QCD prediction (2).…”

Section: Diphoton Productionsupporting

confidence: 56%

See 1 more Smart Citation

Photon plus charm and diphotons at {radical}s 1.8 TeV

Blair¹

1995

Self Cite

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Section: Diphoton Productionsupporting

confidence: 56%

“…The cuts on the photon candidates are the same as those applied for single photon measurements, see table 1. The muon cuts include a requirement that the tracks in the inner and outer muon chambers match with the central tracker track.…”

Section: Photon Plus Muon Productionmentioning

confidence: 99%

Photon plus charm and diphotons at {radical}s 1.8 TeV

Blair¹

1995

Self Cite

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“…The "two fragmentation" contribution involves two such convolutions, hence one more smearing. This distribution is another interesting infrared sensitive observable, measured by several experiments both at fixed target and collider energies [2,5,6], though less discussed in the literature from the theoretical side. The regime φ γγ → π includes back-to-back photons, a set of configurations which lie at the elastic boundary of the phase space.…”

Section: Infrared Sensitivity Near the Elastic Boundarymentioning

confidence: 99%

“…Beside this important motivation, this process deserves interest by its own. The production of such pairs of photons has been experimentally studied in a large domain of energies, from fixed targets [1,2,3] to colliders [4,5,6]. A wide variety of observables has been measured, such as distributions of invariant mass, azimuthal angle and transverse momentum of the pairs of photons, inclusive transverse momentum distributions of each photon, which offer the opportunity to test our understanding of this process.…”

Section: Introductionmentioning

confidence: 99%

A full next-to-leading order study of direct photon pair production in hadronic collisions

et al. 2000

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We discuss the production of photon pairs in hadronic collisions, from fixed target to LHC energies. The study which follows is based on a QCD calculation at full next-to-leading order accuracy, including single and double fragmentation contributions, and implemented in the form of a general purpose computer program of "partonic event generator" type. To illustrate the possibilities of this code, we present the comparison with observables measured by the WA70 and D0 collaborations, and some predictions for the irreducible background to the search of Higgs bosons at LHC in the channel h → γγ. We also discuss theoretical scale uncertainties for these predictions, and examine several infrared sensitive situations which deserve further study.

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“…The HERWIG calculation of the cross-section only includes the Born term and production from gluon-gluon interactions via a quark box diagram. It is known that these diagrams alone predict a crosssection for photon pair production at the Tevatron which is a factor of ≈ 5 too small [39]. This large discrepancy means that one cannot rely on existing Monte Carlo simulations to produce a reliable background estimate, and in particular that the angular distribution of the background cannot be trusted.…”

Section: G → γγmentioning

confidence: 99%

Low-Pressure High-Density Plasma Production for Chemical Vapor Deposition using Directly Heated Cathode Made of Thoriated Tungsten Wire

Kato

Etoh

Kando

2002

Jpn. J. Appl. Phys.

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Many models that include small extra space dimensions predict graviton states which are well separated in mass, and which can be detected as resonances in collider experiments. It has been shown that the ATLAS detector at the Large Hadron Collider can identify such narrow states up to a mass of 2080 GeV in the decay mode G → e + e − , using a conservative model. This work extends the study of the e + e − channel over the full accessible parameter space, and shows that the reach could extend as high as 3.5 TeV. It then discusses ways in which the expected universal coupling of the resonance can be confirmed using other decay modes. In particular, the mode G → γγ is shown to be measurable with good precision, which would provide powerful confirmation of the graviton hypothesis. The decays G → µ + µ − , W + W − , Z 0 Z 0 and jet-jet are measurable over a more limited range of couplings and masses. Using information from mass and cross-section measurements, the underlying parameters can be extracted. In one test model, the size of the extra dimension can be determined to a precision in length of 7 × 10 −33 m.

show abstract

Measurement of the cross section for production of two isolated prompt photons inpp¯collisions at √s=1.8 TeV

Cited by 35 publications

References 17 publications

Photon plus charm and diphotons at {radical}s 1.8 TeV

Photon plus charm and diphotons at {radical}s 1.8 TeV

A full next-to-leading order study of direct photon pair production in hadronic collisions

Low-Pressure High-Density Plasma Production for Chemical Vapor Deposition using Directly Heated Cathode Made of Thoriated Tungsten Wire

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