The production of final states involving one or more energetic photons from e(+)e(-) collisions is studied in a sample of 58.5 pb(-1) of data recorded at a centre-of-mass energy of 183 GeV by the ALEPH detector at LEP. The e(+)e(-) --> v (v) over bar gamma(gamma) and e(+)e(-) --> gamma gamma(gamma) cross sections are measured. The data are in good agreement with predictions based on the Standard Model and are used to set upper limits on the cross sections for anomalous photon production in the context of two supersymmetric models and for various extensions to QED. In particular, in the context of a super-light gravitino model a cross section upper limit of 0.38 pb is placed on the process e(+)e(-) --> (G) over tilde (G) over tilde gamma, allowing a lower limit to be set on the mass of the gravitino. Limits are also set on the mass of the lightest neutralino in Gauge Mediated Supersymmetry Breaking models. In the case of equal ee *gamma and ee gamma couplings a 95% C.L. lower limit on M-e* of 250 GeV/c(2) is obtained.
Single-and multi-photon production in e(+)e(-) collisions at a centre-of-mass energy of 183 GeV / Barate, R; Buskulic, D; Decamp, D; Ghez, P; Goy, C; Jezequel, S; Lees, Jp; Lucotte, A; Martin, F; Merle, E; Minard, Mn; Nief, Jy; Pietrzyk, B; Alemany, R; Boix, G; Casado, Mp; Chmeissani, M; Crespo, Jm; Delfino, M; Fernandez, E; Fernandez Bosman, M; Garrido, L; Grauges, E; Juste, A; Martinez, M; Merino, G; Miquel, R; Mir, Lm; Morawitz, P; Park, Ic; Pascual, A; Perlas, Ja; Riu, I; Sanchez, F; Colaleo, A; Creanza, Donato Maria; de Palma, M; Gelao, G; Iaselli, Giuseppe; Maggi, Giorgio Pietro; Maggi, M; Nuzzo, S; Ranieri, A; Raso, G; Ruggieri, F; Selvaggi, G; Silvestris, L; Tempesta, P; Tricomi, A; Zito, G; Huang, X; Lin, J; Ouyang, Q; Wang, T; Xie, Y; Xu, R; Xue, S; Zhang, J; Zhang, L; Zhao, W; Abbaneo, D; Becker, U; Bright Thomas, P; Casper, D; Cattaneo, M; Ciulli, V; Dissertori, G; Drevermann, H; Forty, Rw; Frank, M; Gianotti, F; Hagelberg, R; Hansen, Jb; Harvey, J; Janot, P; Jost, B; Lehraus, I; Maley, P; Mato, P; Minten, A; Moneta, L; Qi, N; Pacheco, A; Ranjard, F; Rolandi, L; Rousseau, D; Schlatter, D; Schmitt, M; Schneider, O; Tejessy, W; Teubert, F; Tomalin, Ir; Vreeswijk, M; Wachsmuth, H; Ajaltouni, Z; Badaud, F; Chazelle, G; Deschamps, O; Falvard, A; Ferdi, C; Gay, P; Guicheney, C; Henrard, P; Jousset, J; Michel, B; Monteil, S; Montret, Jc; Pallin, D; Perret, P; Podlyski, F; Proriol, J; Rosnet, P; Hansen, Jd; Hansen, Jr; Hansen, Ph; Nilsson, Bs; Rensch, B; Waananen, A; Daskalakis, G; Kyriakis, A; Markou, C; Simopoulou, E; Vayaki, A; Blondel, A; Brient, Jc; Machefert, F; Rouge, A; Rumpf, M; Tanaka, R; Valassi, A; Videau, H; Focardi, E; Parrini, G; Zachariadou, K; Cavanaugh, R; Corden, M; Georgiopoulos, C; Huehn, T; Jaffe, De; Antonelli, A; Bencivenni, G; Bologna, G; Bossi, F; Campana, P; Capon, G; Cerutti, F; Chiarella, V; Felici, G; Laurelli, P; Mannocchi, G; Murtas, F; Murtas, Gp; Passalacqua, L; Pepe Altarelli, M; Chalmers, M; Curtis, L; Halley, Aw; Lynch, Jg; Negus, P; O'Shea, V; Raine, C; Scarr, Jm; Smith, K; Teixeira Dias, P; Thompson, As; Thomson, E; Ward, Jj; Buchmuller, O; Dhamotharan, S; Geweniger, C; Graefe, G; Hanke, P; Hansper, G; Hepp, V; Eluge, Ee; Putzer, A; Sommer, J; Tittle, K; Werner, S; Wunsch, M; Beuselinck, R; Binnie, Dm; Cameron, W; Dornan, Pj; Girone, M; Goodsir, S; Martin, Eb; Marinelli, N; Moutoussi, A; Nash, J; Sedgbeer, Jk; Spagnolo, P; Williams, Md; Ghete, Vm; Girtler, P; Kneringer, E; Kuhn, D; Rudolph, G; Betteridge, Ap; Bowdery, Ck; Buck, Pg; Colrain, P; Crawford, G; Finch, Aj; Foster, F; Hughes, G; Jones, Rwl; Robertson, An; Williams, Mi; Giehl, I; Hoffmann, C; Jakobs, K; Kleinknecht, K; Quast, G; Renk, B; Rohne, E; Sander, Hg; van Gemmeren, P; Zeitnitz, C; Aubert, Jj; Benchouk, C; Bonissent, A; Bujosa, G; Carr, J; Coyle, P; Ealet, A; Fouchez, D; Leroy, O; Motsch, F; Payre, P; Talby, M; Sadouki, A; Thulasidas, M; Tilquin, A; Trabelsi, K; Aleppo, M; Antonelli, M; Ragusa, F; Berlich, R; Blum, W; Buscher, V; Dietl, H; Ganis, G; Kroha, H; Lutjens, G; Mannert, C; Manner, W; Moser, Hg; Schael, S; Settles, R; Seywerd, H; Stenzel, H; Wiedenmann, W; Wolf, G; Boucrot, J; Callot, O; Chen, S; Davier, M; Duflot, L; Grivaz, Jf; Heusse, P; Hocker, A; Jacholkowska, A; Kado, M; Kim, Dw; Le Diberder, F; Lefrancois, J; Serin, L; Tournefier, E; Veillet, Jj; Videau, I; Zerwas, D; Azzurri, P; Bagliesi, G; Bettarini, S; Boccali, T; Bozzi, C; Calderini, G; Dell'Orso, R; Fantechi, R; Ferrante, I; Giassi, A; Gregorio, A; Ligabue, F; Lusiani, A; Marrocchesi, Ps; Messineo, A; Palla, F; Rizzo, G; Sanguinetti, G; Sciaba, A; Sguazzoni, G; Tenchini, R; Vannini, C; Venturi, A; Verdini, Pg; Blair, Ga; Bryant, Lm; Chambers, Jt; Coles, J; Green, Mg; Medcalf, T; Perrodo, P; Strong, Ja; von Wimmersperg Toeller, Jh; Botterill, Dr; Clifft, Rw; Edgecock, Tr; Haywood, S; Norton, Pr; Thompson, Jc; Wright, Ae; Bloch Devaux, B; Colas, P; Fabbro, B; Faif, G; Lancon, E; Lemaire, Mc; Locci, E; Perez, P; Przysiezniak, H; Rander, J; Renardy, Jf; Rosowsky, A; Roussarie, A; Trabelsi, A; Vallage, B; Black, Sn; Dann, Jh; Kim, Hy; Konstantinidis, N; Litke, Am; Mcneil, Ma; Taylor, G; Booth, Cn; Brew, Caj; Cartwright, S; Combley, F; Kelly, Ms; Lehto, M; Reeve, J; Thompson, Lf; Affholderbach, K; Bohrer, A; Brandt, S; Cowan, G; Foss, J; Grupen, C; Smolik, L; Stephan, F; Giannini, G; Gobbo, B; Musolino, G; Putz, J; Rothberg, J; Wasserbaech, S; Williams, Rw; Armstrong, Sr; Charles, E; Elmer, P; Ferguson, Dps; Gao, Y; Gonzalez, S; Greening, Tc; Hayes, Oj; H, Hu; Jin, S; Mcnamara, Pa; Nachtman, Jm; Nielsen, J; Orejudos, W; Pan, Yb; Saadi, Y; Scott, Ij; Walsh, J; Wu, Sl; Wu, X; Zobernig, G.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 429:1-2(1998), pp. 201-214. [10.1016/S0370-2693(98)00468-7]
Single-and multi-photon production in e(+)e(-) collisions at a centre-of-mass energy of 183 GeV
Barate R; Buskulic D; Decamp D; Ghez P; Goy C; Jezequel S; Lees JP; Lucotte A; Martin F; Merle E; Minard MN; Nief JY; Pietrzyk B; Alemany R; Boix G; Casado MP; Chmeissani M; Crespo JM; Delfino M; Fernandez E; Fernandez Bosman M; Garrido L; Grauges E; Juste A; Martinez M; Merino G; Miquel R; Mir LM; Morawitz P; Park IC; Pascual A; Perlas JA; Riu I; Sanchez F; Colaleo A; CREANZA, Donato Maria ;de Palma M; Gelao G; IASELLI, Giuseppe ;MAGGI, Giorgio Pietro ;Maggi M; Nuzzo S; Ranieri A; Raso G; Ruggieri F; Selvaggi G; Silvestris L; Tempesta P; Tricomi A; Zito G; Huang X; Lin J; Ouyang Q; Wang T; Xie Y; Xu R; Xue S; Zhang J; Zhang L; Zhao W; Abbaneo D; Becker U; Bright Thomas P; Casper D; Cattaneo M; Ciulli V; Dissertori G; Drevermann H; Forty RW; Frank M; Gianotti F; Hagelberg R; Hansen JB; Harvey J; Janot P; Jost B; Lehraus I; Maley P; Mato P; Minten A; Moneta L; Qi N; Pacheco A; Ranjard F; Rolandi L; Rousseau D; Schlatter D; Schmitt M; Schneider O; Tejessy W; Teubert F; Tomalin IR; Vreeswijk M; Wachsmuth H; Ajaltouni Z; Badaud F; Chazelle G; Deschamps O; Falvard A; Ferdi C; Gay P; Guicheney C; Henrard P; Jousset J; Michel B; Monteil S; Montret JC; Pallin D; Perret P; Podlyski F; Proriol J; Rosnet P; Hansen JD; Hansen JR; Hansen PH; Nilsson BS; Rensch B; Waananen A; Daskalakis G; Kyriakis A; Markou C; Simopoulou E; Vayaki A; Blondel A; Brient JC; Machefert F; Rouge A; Rumpf M; Tanaka R; Valassi A; Videau H; Focardi E; Parrini G; Zachariadou K; Cavanaugh R; Corden M; Georgiopoulos C; Huehn T; Jaffe DE; Antonelli A; Bencivenni G; Bologna G; Bossi F; Campana P; Capon G; Cerutti F; Chiarella V; Felici G; Laurelli P; Mannocchi G; Murtas F; Murtas GP; Passalacqua L; Pepe Altarelli M; Chalmers M; Curtis L; Halley AW; Lynch JG; Negus P; O'Shea V; Raine C; Scarr JM; Smith K; Teixeira Dias P; Thompson AS; Thomson E; Ward JJ; Buchmuller O; Dhamotharan S; Geweniger C; Graefe G; Hanke P; Hansper G; Hepp V; Eluge EE; Putzer A; Sommer J; Tittle K; Werner S; Wunsch M; Beuselinck R; Binnie DM; Cameron W; Dornan PJ; Girone M; Goodsir S; Martin EB; Marinelli N; Moutoussi A; Nash J; Sedgbeer JK; Spagnolo P; Williams MD; Ghete VM; Girtler P; Kneringer E; Kuhn D; Rudolph G; Betteridge AP; Bowdery CK; Buck PG; Colrain P; Crawford G; Finch AJ; Foster F; Hughes G; Jones RWL; Robertson AN; Williams MI; Giehl I; Hoffmann C; Jakobs K; Kleinknecht K; Quast G; Renk B; Rohne E; Sander HG; van Gemmeren P; Zeitnitz C; Aubert JJ; Benchouk C; Bonissent A; Bujosa G; Carr J; Coyle P; Ealet A; Fouchez D; Leroy O; Motsch F; Payre P; Talby M; Sadouki A; Thulasidas M; Tilquin A; Trabelsi K; Aleppo M; Antonelli M; Ragusa F; Berlich R; Blum W; Buscher V; Dietl H; Ganis G; Kroha H; Lutjens G; Mannert C; Manner W; Moser HG; Schael S; Settles R; Seywerd H; Stenzel H; Wiedenmann W; Wolf G; Boucrot J; Callot O; Chen S; Davier M; Duflot L; Grivaz JF; Heusse P; Hocker A; Jacholkowska A; Kado M; Kim DW; Le Diberder F; Lefrancois J; Serin L; Tournefier E; Veillet JJ; Videau I; Zerwas D; Azzurri P; Bagliesi G; Bettarini S; Boccali T; Bozzi C; Calderini G; Dell'Orso R; Fantechi R; Ferrante I; Giassi A; Gregorio A; Ligabue F; Lusiani A; Marrocchesi PS; Messineo A; Palla F; Rizzo G; Sanguinetti G; Sciaba A; Sguazzoni G; Tenchini R; Vannini C; Venturi A; Verdini PG; Blair GA; Bryant LM; Chambers JT; Coles J; Green MG; Medcalf T; Perrodo P; Strong JA; von Wimmersperg Toeller JH; Botterill DR; Clifft RW; Edgecock TR; Haywood S; Norton PR; Thompson JC; Wright AE; Bloch Devaux B; Colas P; Fabbro B; Faif G; Lancon E; Lemaire MC; Locci E; Perez P; Przysiezniak H; Rander J; Renardy JF; Rosowsky A; Roussarie A; Trabelsi A; Vallage B; Black SN; Dann JH; Kim HY; Konstantinidis N; Litke AM; McNeil MA; Taylor G; Booth CN; Brew CAJ; Cartwright S; Combley F; Kelly MS; Lehto M; Reeve J; Thompson LF; Affholderbach K; Bohrer A; Brandt S; Cowan G; Foss J; Grupen C; Smolik L; Stephan F; Giannini G; Gobbo B; Musolino G; Putz J; Rothberg J; Wasserbaech S; Williams RW; Armstrong SR; Charles E; Elmer P; Ferguson DPS; Gao Y; Gonzalez S; Greening TC; Hayes OJ; Hu H; Jin S; McNamara PA; Nachtman JM; Nielsen J; Orejudos W; Pan YB; Saadi Y; Scott IJ; Walsh J; Wu SL; Wu X; Zobernig G.
1998-01-01
Abstract
The production of final states involving one or more energetic photons from e(+)e(-) collisions is studied in a sample of 58.5 pb(-1) of data recorded at a centre-of-mass energy of 183 GeV by the ALEPH detector at LEP. The e(+)e(-) --> v (v) over bar gamma(gamma) and e(+)e(-) --> gamma gamma(gamma) cross sections are measured. The data are in good agreement with predictions based on the Standard Model and are used to set upper limits on the cross sections for anomalous photon production in the context of two supersymmetric models and for various extensions to QED. In particular, in the context of a super-light gravitino model a cross section upper limit of 0.38 pb is placed on the process e(+)e(-) --> (G) over tilde (G) over tilde gamma, allowing a lower limit to be set on the mass of the gravitino. Limits are also set on the mass of the lightest neutralino in Gauge Mediated Supersymmetry Breaking models. In the case of equal ee *gamma and ee gamma couplings a 95% C.L. lower limit on M-e* of 250 GeV/c(2) is obtained.
Citazione
Single-and multi-photon production in e(+)e(-) collisions at a centre-of-mass energy of 183 GeV / Barate, R; Buskulic, D; Decamp, D; Ghez, P; Goy, C; Jezequel, S; Lees, Jp; Lucotte, A; Martin, F; Merle, E; Minard, Mn; Nief, Jy; Pietrzyk, B; Alemany, R; Boix, G; Casado, Mp; Chmeissani, M; Crespo, Jm; Delfino, M; Fernandez, E; Fernandez Bosman, M; Garrido, L; Grauges, E; Juste, A; Martinez, M; Merino, G; Miquel, R; Mir, Lm; Morawitz, P; Park, Ic; Pascual, A; Perlas, Ja; Riu, I; Sanchez, F; Colaleo, A; Creanza, Donato Maria; de Palma, M; Gelao, G; Iaselli, Giuseppe; Maggi, Giorgio Pietro; Maggi, M; Nuzzo, S; Ranieri, A; Raso, G; Ruggieri, F; Selvaggi, G; Silvestris, L; Tempesta, P; Tricomi, A; Zito, G; Huang, X; Lin, J; Ouyang, Q; Wang, T; Xie, Y; Xu, R; Xue, S; Zhang, J; Zhang, L; Zhao, W; Abbaneo, D; Becker, U; Bright Thomas, P; Casper, D; Cattaneo, M; Ciulli, V; Dissertori, G; Drevermann, H; Forty, Rw; Frank, M; Gianotti, F; Hagelberg, R; Hansen, Jb; Harvey, J; Janot, P; Jost, B; Lehraus, I; Maley, P; Mato, P; Minten, A; Moneta, L; Qi, N; Pacheco, A; Ranjard, F; Rolandi, L; Rousseau, D; Schlatter, D; Schmitt, M; Schneider, O; Tejessy, W; Teubert, F; Tomalin, Ir; Vreeswijk, M; Wachsmuth, H; Ajaltouni, Z; Badaud, F; Chazelle, G; Deschamps, O; Falvard, A; Ferdi, C; Gay, P; Guicheney, C; Henrard, P; Jousset, J; Michel, B; Monteil, S; Montret, Jc; Pallin, D; Perret, P; Podlyski, F; Proriol, J; Rosnet, P; Hansen, Jd; Hansen, Jr; Hansen, Ph; Nilsson, Bs; Rensch, B; Waananen, A; Daskalakis, G; Kyriakis, A; Markou, C; Simopoulou, E; Vayaki, A; Blondel, A; Brient, Jc; Machefert, F; Rouge, A; Rumpf, M; Tanaka, R; Valassi, A; Videau, H; Focardi, E; Parrini, G; Zachariadou, K; Cavanaugh, R; Corden, M; Georgiopoulos, C; Huehn, T; Jaffe, De; Antonelli, A; Bencivenni, G; Bologna, G; Bossi, F; Campana, P; Capon, G; Cerutti, F; Chiarella, V; Felici, G; Laurelli, P; Mannocchi, G; Murtas, F; Murtas, Gp; Passalacqua, L; Pepe Altarelli, M; Chalmers, M; Curtis, L; Halley, Aw; Lynch, Jg; Negus, P; O'Shea, V; Raine, C; Scarr, Jm; Smith, K; Teixeira Dias, P; Thompson, As; Thomson, E; Ward, Jj; Buchmuller, O; Dhamotharan, S; Geweniger, C; Graefe, G; Hanke, P; Hansper, G; Hepp, V; Eluge, Ee; Putzer, A; Sommer, J; Tittle, K; Werner, S; Wunsch, M; Beuselinck, R; Binnie, Dm; Cameron, W; Dornan, Pj; Girone, M; Goodsir, S; Martin, Eb; Marinelli, N; Moutoussi, A; Nash, J; Sedgbeer, Jk; Spagnolo, P; Williams, Md; Ghete, Vm; Girtler, P; Kneringer, E; Kuhn, D; Rudolph, G; Betteridge, Ap; Bowdery, Ck; Buck, Pg; Colrain, P; Crawford, G; Finch, Aj; Foster, F; Hughes, G; Jones, Rwl; Robertson, An; Williams, Mi; Giehl, I; Hoffmann, C; Jakobs, K; Kleinknecht, K; Quast, G; Renk, B; Rohne, E; Sander, Hg; van Gemmeren, P; Zeitnitz, C; Aubert, Jj; Benchouk, C; Bonissent, A; Bujosa, G; Carr, J; Coyle, P; Ealet, A; Fouchez, D; Leroy, O; Motsch, F; Payre, P; Talby, M; Sadouki, A; Thulasidas, M; Tilquin, A; Trabelsi, K; Aleppo, M; Antonelli, M; Ragusa, F; Berlich, R; Blum, W; Buscher, V; Dietl, H; Ganis, G; Kroha, H; Lutjens, G; Mannert, C; Manner, W; Moser, Hg; Schael, S; Settles, R; Seywerd, H; Stenzel, H; Wiedenmann, W; Wolf, G; Boucrot, J; Callot, O; Chen, S; Davier, M; Duflot, L; Grivaz, Jf; Heusse, P; Hocker, A; Jacholkowska, A; Kado, M; Kim, Dw; Le Diberder, F; Lefrancois, J; Serin, L; Tournefier, E; Veillet, Jj; Videau, I; Zerwas, D; Azzurri, P; Bagliesi, G; Bettarini, S; Boccali, T; Bozzi, C; Calderini, G; Dell'Orso, R; Fantechi, R; Ferrante, I; Giassi, A; Gregorio, A; Ligabue, F; Lusiani, A; Marrocchesi, Ps; Messineo, A; Palla, F; Rizzo, G; Sanguinetti, G; Sciaba, A; Sguazzoni, G; Tenchini, R; Vannini, C; Venturi, A; Verdini, Pg; Blair, Ga; Bryant, Lm; Chambers, Jt; Coles, J; Green, Mg; Medcalf, T; Perrodo, P; Strong, Ja; von Wimmersperg Toeller, Jh; Botterill, Dr; Clifft, Rw; Edgecock, Tr; Haywood, S; Norton, Pr; Thompson, Jc; Wright, Ae; Bloch Devaux, B; Colas, P; Fabbro, B; Faif, G; Lancon, E; Lemaire, Mc; Locci, E; Perez, P; Przysiezniak, H; Rander, J; Renardy, Jf; Rosowsky, A; Roussarie, A; Trabelsi, A; Vallage, B; Black, Sn; Dann, Jh; Kim, Hy; Konstantinidis, N; Litke, Am; Mcneil, Ma; Taylor, G; Booth, Cn; Brew, Caj; Cartwright, S; Combley, F; Kelly, Ms; Lehto, M; Reeve, J; Thompson, Lf; Affholderbach, K; Bohrer, A; Brandt, S; Cowan, G; Foss, J; Grupen, C; Smolik, L; Stephan, F; Giannini, G; Gobbo, B; Musolino, G; Putz, J; Rothberg, J; Wasserbaech, S; Williams, Rw; Armstrong, Sr; Charles, E; Elmer, P; Ferguson, Dps; Gao, Y; Gonzalez, S; Greening, Tc; Hayes, Oj; H, Hu; Jin, S; Mcnamara, Pa; Nachtman, Jm; Nielsen, J; Orejudos, W; Pan, Yb; Saadi, Y; Scott, Ij; Walsh, J; Wu, Sl; Wu, X; Zobernig, G.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 429:1-2(1998), pp. 201-214. [10.1016/S0370-2693(98)00468-7]
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Il report seguente simula gli indicatori relativi alla propria produzione scientifica in relazione alle soglie ASN 2023-2025 del proprio SC/SSD. Si ricorda che il superamento dei valori soglia (almeno 2 su 3) è requisito necessario ma non sufficiente al conseguimento dell'abilitazione. La simulazione si basa sui dati IRIS e sugli indicatori bibliometrici alla data indicata e non tiene conto di eventuali periodi di congedo obbligatorio, che in sede di domanda ASN danno diritto a incrementi percentuali dei valori. La simulazione può differire dall'esito di un’eventuale domanda ASN sia per errori di catalogazione e/o dati mancanti in IRIS, sia per la variabilità dei dati bibliometrici nel tempo. Si consideri che Anvur calcola i valori degli indicatori all'ultima data utile per la presentazione delle domande. La presente simulazione è stata realizzata sulla base delle specifiche raccolte sul tavolo ER del Focus Group IRIS coordinato dall’Università di Modena e Reggio Emilia e delle regole riportate nel DM 589/2018 e allegata Tabella A. Cineca, l’Università di Modena e Reggio Emilia e il Focus Group IRIS non si assumono alcuna responsabilità in merito all’uso che il diretto interessato o terzi faranno della simulazione. Si specifica inoltre che la simulazione contiene calcoli effettuati con dati e algoritmi di pubblico dominio e deve quindi essere considerata come un mero ausilio al calcolo svolgibile manualmente o con strumenti equivalenti.