Searches for new physics in diphoton events in [Formula Presented] collisions at [Formula Presented]

Physical Review D - Particles, Fields, Gravitation and Cosmology

Volumn 59, Issue 9, 1999, Pages

  Abe, F ^q   Akimoto, H ^am   Akopian, A ^ae   Albrow, M G ^g   Amadon, A ^e   Amendolia, S R ^aa   Amidei, D ^t   Antos, J ^ag   Aota, S ^ak   Apollinari, G ^ae   Arisawa, T ^am   Asakawa, T ^ak   Ashmanskas, W ^e   Atac, M ^g   Azzi Bacchetta, P ^y   Bacchetta, N ^y   Bagdasarov, S ^ae   Bailey, M W ^v   Barbaro, P ^ad   Barbaro Galtieri, A ^r   Barnes, V E ^ac   Barnett, B A ^o   Barone, M ⁱ   Bauer, G ^s   Baumann, T ^k   Bedeschi, F ^aa   Behrends, S ^c   Belforte, S ^aa   Bellettini, G ^aa   Bellinger, J ^an   Benjamin, D ^ai   Bensinger, J ^c   Beretvas, A ^g   Berge, J P ^g   Berryhill, J ^e   Bertolucci, S ⁱ   Bettelli, S ^aa   Bevensee, B ^z   Bhatti, A ^ae   Biery, K ^g   Bigongiari, C ^aa   Binkley, M ^g   Bisello, D ^y   Blair, R E ^a   Blocker, C ^c   Bloom, K ^t   Blusk, S ^ad   Bodek, A ^ad   Bokhari, W ^z   Bolla, G ^ac   Bonushkin, Y ^d   Bortoletto, D ^ac   Boudreau, J ^ab   Breccia, L ^b   Bromberg, C ^u   Bruner, N ^v   Brunetti, R ^b   Buckley Geer, E ^g   Budd, H S ^ad   Burkett, K ^k   Busetto, G ^y   Byon Wagner, A ^g   Byrum, K L ^a   Campbell, M ^t   Caner, A ^aa   Carithers, W ^r   Carlsmith, D ^an   Cassada, J ^ad   Castro, A ^y   Cauz, D ^aj   Cerri, A ^aa   Chang, P S ^ag   Chang, P T ^ag   Chao, H Y ^ag   Chapman, J ^t   Cheng, M ^ag   Chertok, M ^ah   Chiarelli, G ^aa   Chiou, C N ^ag   Chlebana, F ^g   Christofek, L ^m   Cropp, R ⁿ   Chu, M L ^ag   Cihangir, S ^g   Clark, A G ^j   Cobal, M ^aa   Cocca, E ^aa   Contreras, M ^e   Conway, J ^af   Cooper, J ^g   Cordelli, M ⁱ   Costanzo, D ^aa   Couyoumtzelis, C ^j   Cronin Hennessy, D ^f   Culbertson, R ^e   Dagenhart, D ^al   Daniels, T ^s   DeJongh, F ^g   Dell'Agnello S ⁱ   Dell'Orso M ^aa   Demina, R ^g   Demortier, L ^ae   Deninno, M ^b   Derwent, P F ^g   Devlin, T ^af   Dittmann, J R ^f   Donati, S ^aa   Done, J ^ah   Dorigo, T ^y   Eddy, N ^m   Einsweiler, K ^r   Elias, J E ^g   Ely, R ^r   Engels, E ^ab   Erdmann, W ^g   Errede, D ^m   Errede, S ^m   Fan, Q ^ad   Feild, R G ^ao   Feng, Z ^o   Ferretti, C ^aa   Fiori, I ^b   Flaugher, B ^g   Foster, G W ^g   Franklin, M ^k   Freeman, J ^g   Friedman, J ^s   Frisch, H ^e   Fukui, Y ^q   Gadomski, S ⁿ   Galeotti, S ^aa   Gallinaro, M ^z   Ganel, O ^ai   Garcia Sciveres, M ^r   Garfinkel, A F ^ac   Gay, C ^ao   Geer, S ^g   Gerdes, D W ^t   Giannetti, P ^aa   Giokaris, N ^ae   Giromini, P ⁱ   Giusti, G ^aa   Gold, M ^v   Gordon, A ^k   Goshaw, A T ^f   Gotra, Y ^ab   Goulianos, K ^ae   Grassmann, H ^aj   Green, C ^ac   Groer, L ^af   Grosso Pilcher, C ^e   Guillian, G ^t   Guimaraes da Costa, J ^t   Guo, R S ^ag   Haber, C ^r   Hafen, E ^s   Hahn, S R ^g   Hamilton, R ^k   Handa, T ^l   Handler, R ^an   Hao, W ^ai   Happacher, F ⁱ   Hara, K ^ak   Hardman, A D ^ac   Harris, R M ^g   Hartmann, F ^p   Hauser, J ^d   Hayashi, E ^ak   Heinrich, J ^z   Heiss, A ^p   Hinrichsen, B ⁿ   Hoffman, K D ^ac   Hohlmann, M ^e   Holck, C ^z   Hollebeek, R ^z   Holloway, L ^m   Huang, Z ^t   Huffman, B T ^ab   Hughes, R ^w   Huston, J ^u   Huth, J ^k   Ikeda, H ^ak   Incagli, M ^aa   Incandela, J ^g   Introzzi, G ^aa   Iwai, J ^am   Iwata, Y ^l   James, E ^t   Jensen, H ^g   Joshi, U ^g   Kajfasz, E ^y   Kambara, H ^j   Kamon, T ^ah   Kaneko, T ^ak   Karr, K ^al   Kasha, H ^ao   Kato, Y ^x   Keaffaber, T A ^ac   Kelley, K ^s   Kennedy, R D ^g   Kephart, R ^g   Kestenbaum, D ^k   Khazins, D ^f   Kikuchi, T ^ak   Kim, B J ^aa   Kim, H S ⁿ   Kim, S H ^ak   Kim, Y K ^r   Kirsch, L ^c   Klimenko, S ^h   Knoblauch, D ^p   Koehn, P ^w   Kongeter A ^p   Kondo, K ^ak   Konigsberg, J ^h   Kordas, K ⁿ   Korytov, A ^h   Kovacs, E ^a   Kowald, W ^f   Kroll, J ^z   Kruse, M ^ad   Kuhlmann, S E ^a   Kuns, E ^af   Kurino, K ^l   Kuwabara, T ^ak   Laasanen, A T ^ac   Lami, S ^aa   Lammel, S ^g   Lamoureux, J I ^c   Lancaster, M ^r   Lanzoni, M ^aa   Latino, G ^aa   LeCompte, T ^a   Leone, S ^aa   Lewis, J D ^g   Lindgren, M ^d   Liss, T M ^m   Liu, J B ^ad   Liu, Y C ^ag   Lockyer, N ^z   Long, O ^z   Loreti, M ^y   Lucchesi, D ^aa   Lukens, P ^g   Lusin, S ^an   Lys, J ^r   Maeshima, K ^g   Maksimovic, P ^k   Mangano, M ^aa   Mariotti, M ^y   Marriner, J P ^g   Martignon, G ^y   Martin, A ^ao   Matthews, J A J ^v   Mazzanti, P ^b   McFarland, K ^ad   McIntyre, P ^ah   Melese, P ^ae   Menguzzato, M ^y   Menzione, A ^aa   Meschi, E ^aa   Metzler, S ^z   Miao, C ^t   Miao, T ^g   Michail, G ^k   Miller, R ^u   Minato, H ^ak   Miscetti, S ⁱ   Mishina, M ^q   Miyashita, S ^ak   Moggi, N ^aa   Moore, E ^v   Morita, Y ^q   Mukherjee, A ^g   Muller, T ^p   Murat, P ^aa   Murgia, S ^u   Musy, M ^aj   Nakada, H ^ak   Nakaya, T ^e   Nakano, I ^l   Nelson, C ^g   Neuberger, D ^p   Newman Holmes, C ^g   Ngan, C Y P ^s   Nodulman, L ^a   Nomerotski, A ^h   Oh, S H ^f   Ohmoto, T ^l   Ohsugi, T ^l   Oishi, R ^ak   Okabe, M ^ak   Okusawa, T ^x   Olsen, J ^an   Pagliarone, C ^aa   Paoletti, R ^aa   Papadimitriou, V ^ai   Pappas, S P ^ao   Parashar, N ^aa   Parri, A ⁱ   Patrick, J ^g   Pauletta, G ^aj   Paulini, M ^r   Perazzo, A ^aa   Pescara, L ^y   Peters, M D ^r   Phillips, T J ^f   Piacentino, G ^aa   Pillai, M ^ad   Pitts, K T ^g   Plunkett, R ^g   Pompos, A ^ac   Pondrom, L ^an   Proudfoot, J ^a   Ptohos, F ^k   Punzi, G ^aa   Ragan, K ⁿ   Reher, D ^r   Reischl, M ^p   Ribon, A ^y   Rimondi, F ^b   Ristori, L ^aa   Robertson, W J ^f   Robinson, A ⁿ   Rodrigo, T ^aa   Rolli, S ^al   Rosenson, L ^s   Roser, R ^g   Saab, T ⁿ   Sakumoto, W K ^ad   Saltzberg, D ^d   Sansoni, A ⁱ   Santi, L ^aj   Sato, H ^ak   Schlabach, P ^g   Schmidt, E E ^g   Schmidt, M P ^ao   Scott, A ^d   Scribano, A ^aa   Segler, S ^g   Seidel, S ^v   Seiya, Y ^ak   Semeria, F ^b   Shah, T ^s   Shapiro, M D ^r   Shaw, N M ^ac   Shepard, P F ^ab   Shibayama, T ^ak   Shimojima, M ^ak   Shochet, M ^e   Siegrist, J ^r   Sill, A ^ai   Sinervo, P ⁿ   Singh, P ^m   Sliwa, K ^al   Smith, C ^o   Snider, F D ^o   Spalding, J ^g   Speer, T ^j   Sphicas, P ^s   Spinella, F ^aa   Spiropulu, M ^k   Spiegel, L ^g   Stanco, L ^y   Steele, J ^an   Stefanini, A ^aa   Strohmer R ^g   Strologas, J ^m   Strumia, F ^j   Stuart, D ^g   Sumorok, K ^s   Suzuki, J ^ak   Suzuki, T ^ak   Takahashi, T ^x   Takano, T ^x   Takashima, R ^l   Takikawa, K ^ak   Tanaka, M ^ak   Tannenbaum, B ^d   Tartarelli, F ^aa   Taylor, W ⁿ   Tecchio, M ^t   Teng, P K ^ag   Teramoto, Y ^x   Terashi, K ^ak   Tether, S ^s   Theriot, D ^g   Thomas, T L ^v   Thurman Keup, R ^a   Timko, M ^al   Tipton, P ^ad   Titov, A ^ae   Tkaczyk, S ^g   Toback, D ^e   Tollefson, K ^ad   Tollestrup, A ^g   Toyoda, H ^x   Trischuk, W ⁿ   Troconiz, J F ^k   Truitt, S ^t   Tseng, J ^s   Turini, N ^aa   Uchida, T ^ak   Ukegawa, F ^z   Valls, J ^af   van den Brink, S C ^o   Vejcik, S ^g   Velev, G ^aa   Vidal, R ^g   Vilar, R ^g   Volobouev, I ^a   Vucinic, D ^s   Wagner, R G ^a   Wagner, R L ^g   Wahl, J ^e   Wallace, N B ^aa   Walsh, A M ^af   Wang, C ^f   Wang, C H ^ag   Wang, M J ^ag   Warburton, A ⁿ   Watanabe, T ^ak   Watts, T ^af   Webb, R ^ah   Wei, C ^f   Wenzel, H ^p   Wester, W C ^g   Wicklund, A B ^a   Wicklund, E ^g   Wilkinson, R ^z   Williams, H H ^z   Wilson, P ^g   Winer, B L ^w   Winn, D ^t   Wolinski, D ^t   Wolinski, J ^u   Worm, S ^v   Wu, X ^j   Wyss, J ^aa   Yagil, A ^g   Yao, W ^r   Yasuoka, K ^ak   Yeh, G P ^g   Yeh, P ^ag   Yoh, J ^g   Yosef, C ^u   Yoshida, T ^x   Yu, I ^g   Zanetti, A ^aj   Zetti, F ^aa   Zucchelli, S ^b   more..

^a ARGONNE NATIONAL LABORATORY   (United States)

^b UNIVERSITY OF BOLOGNA   (Italy)

^c BRANDEIS UNIVERSITY   (United States)

^d UNIVERSITY OF CALIFORNIA   (United States)

^e UNIVERSITY OF CHICAGO   (United States)

^f DUKE UNIVERSITY   (United States)

^g FERMI NATIONAL ACCELERATOR LABORATORY   (United States)

^h UNIVERSITY OF FLORIDA   (United States)

ⁱ INFN LABORATORI NAZIONALI DI FRASCATI   (Italy)

^j UNIVERSITY OF GENEVA   (Switzerland)

^k HARVARD UNIVERSITY   (United States)

^l HIROSHIMA UNIVERSITY   (Japan)

^m UNIVERSITY OF ILLINOIS AT URBANA CHAMPAIGN   (United States)

ⁿ MCGILL UNIVERSITY   (Canada)

^o JOHNS HOPKINS UNIVERSITY   (United States)

^p UNIVERSITY OF KARLSRUHE   (Germany)

^q HIGH ENERGY ACCELERATOR RESEARCH ORGANIZATION KEK   (Japan)

^r LAWRENCE BERKELEY NATIONAL LABORATORY   (United States)

^s MASSACHUSETTS INSTITUTE OF TECHNOLOGY   (United States)

^t UNIVERSITY OF MICHIGAN   (United States)

^u MICHIGAN STATE UNIVERSITY   (United States)

^v UNIVERSITY OF NEW MEXICO   (United States)

^w OHIO STATE UNIVERSITY   (United States)

^x Osaka Prefecture University   (Japan)

^y UNIVERSITY OF PADOVA   (Italy)

^z UNIVERSITY OF PENNSYLVANIA   (United States)

^aa SCUOLA NORMALE SUPERIORE   (Italy)

^ab UNIVERSITY OF PITTSBURGH   (United States)

^ac PURDUE UNIVERSITY   (United States)

^ad UNIVERSITY OF ROCHESTER   (United States)

^ae ROCKEFELLER UNIVERSITY   (United States)

^af RUTGERS UNIVERSITY   (United States)

^ag ACADEMIA SINICA   (Taiwan)

^ah TEXAS A AND M UNIVERSITY   (United States)

^ai TEXAS TECH UNIVERSITY   (United States)

^aj UNIVERSITY OF TRIESTE   (Italy)

^ak UNIVERSITY OF TSUKUBA   (Japan)

^al TUFTS UNIVERSITY   (United States)

^am WASEDA UNIVERSITY   (Japan)

^an UNIVERSITY OF WISCONSIN MADISON   (United States)

^ao YALE UNIVERSITY   (United States)

more..

Author keywords

[No Author keywords available]

Indexed keywords

EID: 85039589320     PISSN: 15507998     EISSN: 15502368     Source Type: Journal    
DOI: 10.1103/PhysRevD.59.092002     Document Type: Article

References (84)

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51. While there are three (Formula presented) events (Formula presented) in the data with a background expectation of (Formula presented) the (Formula presented) candidate does not look like the background source. A more appropriate comparison is made by removing the (Formula presented) candidate event. In that case, for both photons above 12 GeV there are 2 diboson candidates, consistent with an expectation of (Formula presented) events, and for both photons above 25 GeV there are no diboson candidates, consistent with an expectation of (Formula presented) events.
52. For example, the event could be due to two (Formula presented) collisions occurring at the same time, each producing part of the event. Similarly, the event could be the overlap of a (Formula presented) collision and a cosmic ray interaction. Another possibility is that parts of the event are due to jets which faked the electron and/or photon identification criteria.
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61. The measurement of the shower in the electromagnetic calorimeter would also be unusual for an electron. However, a detailed study indicates that the problem is not significant and may be due to noise in the calorimeter.
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63. The photon sample was selected as “photons” having no nearby tracks (see Table I); the efficiency of these criteria is estimated to be 95.3%. Assuming all of the photons rejected from the sample have a VTX occupancy of greater than 50% and (Formula presented) the true rate at which photons pass these cuts could be as large as 15% and 7% respectively.
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67. We have considered here only standard model interpretations. There are exotic possibilities such as a new particle that decays to (Formula presented) that are consistent with all the data.
68. The list of electron requirements does not include the SVX Δφ cut since it is not part of the standard selection criteria. The CTC track requirement is removed since it restricts the η range in which electrons can be found. Removing these requirements is conservative as it only increases the rate at which standard model processes could produce the event.
69. S. Mrenna (private communication). This calculation was performed usingMADGRAPH 27 andPYTHIA 19.Also see Ref. 3(b). Based on experience with Diboson production there is about a 30% uncertainty on the (Formula presented) cross section because of higher order corrections and structure function uncertainties.
70. Supersymmetric scenarios could produce such a situation. For example (Formula presented)
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