Determination of the e+e−→γγ(γ) cross-section at centre-of-mass energies ranging from 189 GeV to 202 GeV

Abreu, P.; Adam, W.; Adye, T.; Adžić, P.; Albrecht, Z.; Alderweireld, T.; Alekseev, G. D.; Alemany, R.; Allmendinger, T.; Allport, P. P.; Almehed, S.; Amaldi, U.; Amapane, N.; Amato, S.; Anassontzis, E.; Andersson, P.; Andreazza, A.; Andringa, S.; Antilogus, P.; Apel, W. D.; Arnoud, Y.; Åsman, B.; Augustin, J. E.; Augustinus, A.; Baillon, P.; Ballestrero, A.; Bambade, P.; Barão, F.; Barbiellini, G.; Barbier, R.; Bardin, D. Y.; Barker, G. J.; Baroncelli, A.; Battaglia, M.; Baubillier, M.; Becks, K. H.; Begalli, M.; Behrmann, A.; Beillière, P.; Belokopytov, Yu.; Belous, K.; Benekos, N.; Benvenuti, A. C.; Bérat, C.; Berggren, M.; Berntzon, L.; Bertrand, Daniel; Besançon, M.; Bilenky, M. S.; Bizouard, M. A.; Blöch, D.; Blom, H. M.; Bonesini, M.; Boonekamp, M.; Booth, P.S.L.; Borisov, G.; Bosio, C.; Botner, O.; Boudinov, E.; Bouquet, B.; Bourdarios, C.; Bowcock, T. J. V.; Boyko, I. R.; Božović, I.; Bozzo, M.; Bračko, M.; Branchini, P.; Brenner, R.; Brückman, P.; Brunet, J. M.; Bugge, L.; Buran, T.; Buschbeck, B.; Buschmann, P.; Cabrera, S.; Caccia, M.; Calvi, M.; Camporesi, T.; Canale, V.; Carena, F.; Carroll, L.; Gimenez, M. V. Castillo; Cattai, A.; Cavallo, F. R.; Chapkin, M.; Charpentier, Ph.; Checchia, P.; Chelkov, G. A.; Chierici, R.; Chliapnikov, P.; Chochula, P.; Chorowicz, V.; Chudoba, J.; Cieślik, K.; Collins, P.; Contri, R.; Cortina, E.; Cosme, G.; Cossutti, F.; Costa, M. J.; Crawley, H. B.; Crennell, D.; Crosetti, G.; Cuevas, J.; Czellár, S.; D’Hondt, J.; Dalmau, J.; Davenport, M.; Silva, W. Da; Ricca, G. Della; Delpierre, P.; Demaria, N.; Angelis, A. De; Boer, W. De; Clercq, C. De; Lotto, B. De; Min, A. De; Paula, L. De; Dijkstra, H.; Ciaccio, L. Di; Dolbeau, J.; Doroba, K.; Dracos, M.; Drees, J.; Dris, M.; Eigen, G.; Ekelöf, T.; Ellert, M.; Elsing, M.; Engel, J. P.; Santo, M. Esṕırito; Fanourakis, G.; Fassouliotis, D.; Feindt, M.; Fernández, J. P.; Ferrer, A.; Ferrer‐Ribas, E.; Ferro, F.; Firestone, A.; Flagmeyer, U.; Foeth, H.; Fokitis, E.; Fontanelli, F.; Franek, B.; Frodesen, A. G.; Frühwirth, R.; Fulda-Quenzer, F.; Fuster, J.; Galloni, A.; Gamba, D.; Gamblin, S.; Gandelman, M.; Garćıa, C.; Gaspar, C.; Gaspar, M.; Gasparini, U.; Gavillet, Ph.; Gazis, E. N.; Gelé, D.; Geralis, T.; Ghodbane, N.; Gil, I.; Glege, F.; Gokieli, R.; Golob, B.; Gómez-Ceballos, G.; Gonçalves, P.; Caballero, I. González; Gopal, G. P.; Gorn, L.; Gouz, Yu.; Gracco, V.; Grahl, J.; Graziani, E.; Gris, Ph.; Grosdidier, G.; Grzelak, K.; Guy, J.; Haag, C.; Hahn, F.; Hahn, S. R.; Haider, S.; Hajduk, Z.; Hallgren, A.; Hamacher, K.; Hansen, J. R.; Harris, F. J.; Hauler, F.; Hedberg, V.; Heising, S.; Hernández, J. J.; Herquet, P.; Herr, H.; Higón, E.; Holmgren, S. O.; Holt, P. J.; Hoorelbeke, S.; Houlden, M.; Hrubec, J.; Hüber, M.; Hughes, G.; Hultqvist, K.; Jackson, J.; Jacobsson, R.; Jałocha, P.; Janik, R.; Jarlskog, C.; Jarlskog, G.; Jarry, P.; Jean‐Marie, B.; Jeans, D.; Johansson, Erik; Jönsson, P.; Joram, C.; Juillot, P.; Jungermann, L.; Kapusta, F.; Karafasoulis, K.; Katsanevas, S.; Katsoufis, E.; Keränen, R.; Kernel, G.; Kerševan, B. P.; Khokhlov, Yu.A.; Khomenko, B. A.; Khovanski, N. N.; Kiiskinen, A.; King, B. T.; Kinvig, A.; Kjaer, N. J.; Klapp, O.; Kluit, P.; Kokkinias, P.; Kostioukhine, V.; Kourkoumelis, C.; Kouznetsov, O.; Krammer, M.; Križnič, E.; Krumstein, Z.; Kubinec, P.; Kucewicz, W.; Kurowska, J.; Kurvinen, K.; Lämsä, J.; Lane, D. W.; Lapin, V.; Laugier, J. P.; Lauhakangas, R.; Leder, G.; Ledroit, F.; Leinonen, L.; Leisos, A.; Leitner, R.; Lemonne, J.; Lenzen, G.; Lepeltier, V.; Lethuillier, M.; Libby, J.; Liebig, W.; Liko, D.; Lipniacka, A.; Lippi, I.; Loerstad, B.; Loken, J.; Lopes, J. H.; Lopez, J. M.; López-Fernández, R.; Loukas, D.; Lutz, P.; Lyons, L.; MacNaughton, J.; Mahon, J. R.; Maio, A.; Malek, A.; Maltezos, S.; Malychev, V.; Mandl, F.; Marco, J.; Marco, R.; Maréchal, B.; Margoni, M.; Marin, J. C.; Mariotti, C.; Μάρκου, Α.; Martínez-Rivero, C.; Marti-Garcia, S.; Mašík, J.; Mastroyiannopoulos, N.; Matorras, F.; Matteuzzi, C.; Matthiae, G.; Mazzucato, F.; Mazzucato, M.; Cubbin, M. Mc; Kay, R. Mc; Nulty, R. Mc; Pherson, G. Mc; Merle, E.; Meroni, C.; Meyer, W. T.; Miagkov, A.; Migliore, E.; Mirabito, L.; Mitaroff, W.; Mjoernmark, U.; Moa, T.; Moch, M.; Moeller, R.; Mönig, K.; Monge, M. R.; Moraes, D.; Morettini, P.; Morton, G. W.; Muêller, U.; Muenich, K.; Mulders, M.; Mulet-Marquis, C.; Mundim, L.; Mureşan, R.; Murray, W. J.; Muryn, B.; Myatt, G.; Myklebust, T.; Naraghi, F.; Nassiakou, M.; Navarria, F. L.; Nawrocki, K.; Negri, P.; Neufeld, N.; Nicolaidou, R.; Nielsen, B. S.; Niezurawski, P.; Nikolenko, M.; Nomokonov, V.; Nygren, A.; Mucha, A. Oblakowska; Obraztsov, V.; Olshevski, A. G.; Onofre, A.; Orava, R.; Orazi, G.; Österberg, K.; Ouraou, A.; Oyanguren, A.; Paganoni, M.; Paiano, S.; Pain, R.; Paiva, Rui Pedro; Palacios, J.; Papadopoulou, Th. D.; Pape, L.; Parkes, C.; Parodi, F.; Parzefall, U.; Passeri, A.; Passon, O.; Pavel, T.; Pegoraro, M.; Peralta, L.; Pernicka, M.; Perrotta, A.; Petridou, C.; Petrolini, A.; Phillips, H. T.; Pierre, F.; Pimenta, M.; Piotto, E.; Podobnik, T.; Poireau, V.; Pol, M. E.; Polok, G.; Poropat, P.; Pozdniakov, V.; Privitera, P.; Pukhaeva, N.; Pullia, A.; Radojičić, D.; Ragazzi, S.; Rahmani, H.; Rameš, J.; Ratoff, P. N.; Read, A. L.; Rebecchi, P.; Redaelli, N.; Regler, M.; Rehn, J.; Reid, D.; Reinertsen, P. L.; Reinhardt, R.; Renton, P.; Resvanis, L. K.; Richard, F.; Řídký, J.; Rinaudo, G.; Ripp-Baudot, I.; Romero, A.; Ronchese, P.; Rosenberg, E. I.; Rosinský, P.; Roudeau, P.; Rovelli, T.; Ruhlmann-Kleider, V.; Ruiz, A.; Saarikko, H.; Sacquin, Y.; Sadovsky, A.; Sajot, G.; Salt, J.; Sampsonidis, D.; Sannino, M.; Savoy-Navarro, A.; Schwemling, Ph.; Schwering, B.; Schwickerath, U.; Scuri, F.; Seager, P.; Sedykh, Y.; Segar, A. M.; Seibert, N.; Sekulin, R.; Sette, G.; Shellard, R. C.; Siebel, M.; Simard, L.; Simonetto, F.; Sisakian, A. N.; Smadja, G.; Smirnova, O.; Smith, G. R.; Solovianov, O.; Sopczak, A.; Sosnowski, R.; Spassov, T.; Spiriti, E.; Squarcia, S.; Stănescu, C.; Stanitzki, M. M.; Stevenson, K.; Stocchi, A.; Strauss, J.; Strub, R.; Stugu, B.; Szczekowski, M.; Szeptycka, M.; Tabarelli, T.; Taffard, A.; Tegenfeldt, F.; Terranova, F.; Timmermans, J.; Tinti, N.; Tkatchev, L. G.; Tobin, M.; Todorova, Šárka; Tomé, B.; Tonazzo, A.; Tortora, L.; Tortosa, P.; Tranströmer, G.; Treille, D.; Tristram, G.; Trochimczuk, M.; Troncon, C.; Turluer, M. L.; Tyapkin, I. A.; Tyapkin, P.; Tzamarias, S.; Ullaland, O.; Uvarov, V.; Valenti, G.; Vallazza, E.; Dam, P. Van; Boeck, W. Van den; Eldik, J. Van; Lysebetten, A. Van; Remortel, N. Van; Vulpen, I. van; Vegni, G.; Ventura, L.; Vénus, W.; Verbeure, F.; Verdier, P.; Verlato, M.; Vertogradov, L. S.; Verzi, V.; Vilanova, D.; Vitale, L.; Vlasov, E.; Vodopyanov, A.; Voulgaris, G.; Vrba, V.; Wahlen, H.; Washbrook, A.; Weiser, C.; Wicke, D.; Wickens, J.; Wilkinson, G.; Winter, M.; Wolf, G.; Yi, J.; Yushchenko, O.; Zalewska, A.; Zalewski, P.; Zavrtanik, D.; Zevgolatakos, E.; Zimin, N. I.; Zintchenko, A.; Zoller, Ph.; Zumerle, G.; Župan, M.

doi:10.1016/s0370-2693(00)01013-3

Cited by 16 publications

(4 citation statements)

References 26 publications

Supporting

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“…The purely electromagnetic interaction + − → ( ) proceeds via the exchange of a virtual electron in theand -channels (the -channel is forbidden) and is not interfered by the 0 decay. Differential cross-sections were measured at energies from √ = 55 GeV to 207 GeV using the data collected with the VENUS, TOPAZ, ALEPH, DELPHI, L3, and OPAL from 1989 to 2003 [77][78][79][80][81][82][83][84][85]. Comparison of the data with the QED predictions has been performed [86] to constrain models with an excited electron replacing the virtual electron in the QED process [87][88][89] and with deviation from QED due to an effective interaction with nonstandard + − couplings and + − contact terms [90][91][92].…”

Section: Experimental Evidencementioning

confidence: 99%

Appearance of a Minimal Length ine+e-Annihilation

Dymnikova

Sakharov

Ulbricht

2014

Advances in High Energy Physics

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Experimental data reveal with a 5σsignificance the existence of a characteristic minimal lengthle=1.57×10-17 cm at the scaleE=1.253TeV in the annihilation reactione+e-→γγ(γ). Nonlinear electrodynamics coupled to gravity and satisfying the weak energy condition predicts, for an arbitrary gauge invariant Lagrangian, the existence of spinning charged electromagnetic soliton asymptotically Kerr-Newman for a distant observer with the gyromagnetic ratiog=2. Its internal structure includes a rotating equatorial disk of de Sitter vacuum which has properties of a perfect conductor and ideal diamagnetic, displays superconducting behavior, supplies a particle with the finite positive electromagnetic mass related to breaking of space-time symmetry, and gives some idea about the physical origin of a minimal length in annihilation.

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Section: Experimental Evidencementioning

confidence: 99%

Appearance of a Minimal Length ine+e-Annihilation

Dymnikova

Sakharov

Ulbricht

2014

Advances in High Energy Physics

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“…Taking the large extra dimensions (ADD) [9] as an example, searches have been performed on virtual-graviton channels at HERA [10,11], LEP [12][13][14][15][16][17], and the Tevatron [18,19]. The most stringent collider limits before the LHC were given by the Tevatron D0 through the dijet [20], diphoton, and dielectron channels [19], which excluded the ADD cutoff scale M s up to 1.3-2.1 TeV at a 95% C.L., for seven to two extra dimensions.…”

Section: Introductionmentioning

confidence: 99%

Probing new physics viapp→W+W−→lνjjat the CERN LHC

Govoni

Liu

et al. 2012

Phys. Rev. D

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TeV scale new physics, e.g., large extra dimensions or models with anomalous triple vector boson couplings, can lead to excesses in various kinematic regions on the semileptonic productions of pp ! WW ! ljj at the CERN LHC, which, although suffer from large QCD background compared with the pure leptonic channel pp ! WW ! ll, can benefit from larger production rates and the reconstructable four-body mass M ljj . We study the search sensitivity through the ljj channel at the 7 TeV LHC on relevant new physics via probing the hard tails on the reconstructed M ljj and the transverse momentum of leptonically decayed W boson (P TW ), taking into account main backgrounds and including the parton shower and detector simulation effects. Our results show that with integrated luminosity of 5 fb À1 , the LHC can already discover or exclude a large parameter region of the new physics, e.g., a 95% C.L. can be set on the large extra dimensions with a cutoff scale up to 1.5 TeV, and the WWZ anomalous coupling down to, e.g., j Z j $ 0:1. Results are also given for the 8 TeV LHC.1 Searches with a monojet and missing transverse energy via graviton real emission have also been performed at CMS with 36 pb À1 of data [25], which, however, lead to rather loose limits at 95% C.L., i.e., 1.68-2.56 TeV for ¼ 6 to 2. PHYSICAL REVIEW D 86, 074010 (2012) 1550-7998= 2012=86(7)=074010 (7) 074010-1

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“…It proceeds via the exchange of a virtual electron in the t-and u-channels with the forbidden s-channel, and is not interfered by the Z 0 decay. Differential cross sections have been measured at the energies ranging from √ s = 55 GeV to 207 GeV [38][39][40][41][42][43][44][45][46]. The calculations in the frame of QED-α 3 with the radiative corrections up to O(α 3 ) and comparison of the QED predictions with the experimental data has been carried out [47] by constraining the models with an excited electron replacing the virtual electron [48][49][50] and with the deviation from QED due to an effective interaction with the non-standard e + e − γ couplings and e + e − γγ contact terms [51][52][53].…”

Section: Observational Casementioning

confidence: 99%

Mass, Spacetime Symmetry, de Sitter Vacuum, and the Higgs Mechanism

Dymnikova

2020

Symmetry

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We address the question of the intrinsic relation between mass, gravity, spacetime symmetry, and the Higgs mechanism implied by involvement of the de Sitter vacuum as its basic ingredient (a false vacuum). Incorporating the de Sitter vacuum, the Higgs mechanism implicitly incorporates the generic relation between mass, gravity, and spacetime symmetry revealed in the frame of General Relativity for all objects involving the de Sitter vacuum. We overview two observational cases which display and verify this relation, the case known as "negative mass square problem" for neutrino, and appearance of a minimal length scale in e + e − annihilation.

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Determination of the e+e−→γγ(γ) cross-section at centre-of-mass energies ranging from 189 GeV to 202 GeV

Cited by 16 publications

References 26 publications

Appearance of a Minimal Length ine+e-Annihilation

Appearance of a Minimal Length ine+e-Annihilation

Probing new physics viapp→W+W−→lνjjat the CERN LHC

Mass, Spacetime Symmetry, de Sitter Vacuum, and the Higgs Mechanism

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