Search for gamma gamma decays of a Higgs boson in e(+)e(-) collisions at root s up to 209 GeV

Heister, A; Schael, S; Barate, R; Bruneliere, R; De Bonis, I; Decamp, D; Goy, C; Jezequel, S; Lees, Jp; Martin, F; Merle, E; Minard, Mn; Pietrzyk, B; Trocme, B; Boix, G; Bravo, S; Casado, Mp; Chmeissani, M; Crespo, Jm; Fernandez, E; Fernandez Bosman, A; Garrido, L; Grauges, E; Lopez, J; Martinez, M; Merino, G; Pacheco, A; Paneque, D; Ruiz, H; Colaleo, A; Creanza, D; De Filippis, N; de Palma, M; Iaselli, G; Maggi, G; 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; Azzurri, P; Barklow, T; Buchmuller, O; Cattaneo, M; Cerutti, F; Clerbaux, B; Drevermann, H; Forty, Rw; Frank, M; Gianotti, F; Greening, Tc; Hansen, Jb; Harvey, J; Hutchcroft, De; Janot, P; Jost, B; Kado, M; Mato, P; Moutoussi, A; Ranjard, F; Rolandi, Luigi; Schlatter, D; Sguazzoni, G; Tejessy, W; Teubert, F; Valassi, A; Videau, I; Ward, Jj; Badaud, E; Dessagne, S; Falvard, A; Fayolle, D; Gay, P; Jousset, J; Michel, B; Monteil, S; Pallin, D; Pascolo, Jm; Perret, P; Hansen, Jd; Hansen, Jr; Hansen, Ph; Nilsson, Bs; Kyriakis, A; Markou, C; Simopoulou, E; Vayaki, A; Zachariadou, K; Blondel, A; Brient, Jc; Machefert, F; Rouge, A; Swynghedauw, M; Tanaka, R; Videau, H; Ciulli, V; Focardi, E; Parrini, G; Antonelli, A; Antonelli, M; Bencivenni, G; Bossi, F; Capon, G; Chiarella, V; Laurelli, P; Mannocchi, G; Murtas, Gp; Passalacqua, L; Kennedy, J; Lynch, Jg; Negus, P; O'Shea, V; Thompson, As; Wasserbaech, S; Cavanaugh, R; Dhamotharan, S; Geweniger, C; Hanke, P; Hepp, V; Kluge, Ee; Leibenguth, G; Putzer, A; Stenzel, H; Tittel, K; Wunsch, M; Beuselinck, R; Cameron, W; Davies, G; Dornan, Pj; Girone, M; Hill, Rd; Marinelli, N; Nowell, J; Rutherford, Sa; Sedgbeer, Jk; Thompson, Jc; White, R; Ghete, Vm; Girtler, P; Kneringer, E; Kuhn, D; Rudolph, G; Bouhova Thacker, E; Bowdery, Ck; Clarke, Dp; Ellis, G; Finch, Aj; Foster, F; Hughes, G; Jones, Rwl; Pearson, Mr; Robertson, Na; Smizanska, M; van der Aa, O; Delaere, C; Lemaitre, V; Blumenschein, U; Holldorfer, F; Jakobs, K; Kayser, F; Kleinknecht, K; Muller, As; Quast, G; Renk, B; Sander, Hg; Schmeling, S; Wachsmuth, H; Zeitnitz, C; Ziegler, T; Bonissent, A; Coyle, P; Curtil, C; Ealet, A; Fouchez, D; Payre, P; Tilquin, A; Ragusa, F; David, A; Dietl, H; Ganis, G; Huttmann, K; Lutjens, G; Manner, W; Moser, Hg; Settles, R; Wolf, G; Boucrot, J; Callot, O; Davier, M; Duflot, L; Grivaz, Jf; Heusse, P; Jacholkowska, A; Serin, L; Veillet, Jj; de Regie JBD,; Yuan, C; Bagliesi, G; Boccali, T; Foa, L; Giammanco, A; Giassi, A; Ligabue, Franco; Messineo, A; Palla, F; Sanguinetti, G; Sciaba, A; Tenchini, R; Venturi, A; Verdini, Pg; Awunor, O; Blair, Ga; Cowan, G; Garcia Bellido, A; Green, Mg; Jones, Lt; Medcalf, T; Misiejuk, A; Strong, Ja; Teixeira Dias, P; Clifft, Rw; Edgecock, Tr; Norton, Pr; Tomalin, Ir; Bloch Devaux, B; Boumediene, D; Colas, P; Fabbro, B; Lancon, E; Lemaire, Mc; Locci, E; Perez, P; Rander, J; Seager, P; Tuchming, B; Vallage, B; Konstantinidis, N; Litke, Am; Taylor, G; Booth, Cn; Cartwright, S; Combley, F; Hodgson, Pn; Lehto, M; Thompson, Lf; Bohrer, A; Brandt, S; Grupen, C; Hess, J; Ngac, A; Prange, G; Sieler, U; Borean, C; Giannini, G; He, H; Putz, J; Rothberg, J; Armstrong, Sr; Berkelman, K; Cranmer, K; Ferguson, Dps; Gao, Y; Gonzalez, S; Hayes, Oj; Hu, H; Jin, S; Kile, J; Mcnamara, Pa; Nielsen, J; Pan, Yb; von Wimmersperg Toeller JH,; Wiedenmann, W; Wu, J; Wu, Sl; Wu, X; Zobernig, G; Dissertori, G.

doi:10.1016/S0370-2693(02)02242-6

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A search for events with a photon pair arising from the decay of a Higgs boson produced in association with a fermion pair, is performed in 893 pb(-1) of data recorded by the ALEPH detector at LEP at centre-of-mass energies up to 209 GeV. No excess of such events is found over the expected background. An upper limit is derived on the product of the e(+)e(-) --> HZ cross section and the H --> gammagamma branching fraction as a function of the Higgs boson mass. A fermiophobic Higgs boson produced with the Standard Model cross section is excluded at 95% confidence level for all masses below 105.4 GeV/c(2). (C) 2002 Elsevier Science B.V. All rights reserved.

Titolo:	Search for gamma gamma decays of a Higgs boson in e(+)e(-) collisions at root s up to 209 GeV
Autori:	Heister A Schael S Barate R Bruneliere R De Bonis I Decamp D Goy C Jezequel S Lees JP Martin F Merle E Minard MN Pietrzyk B Trocme B Boix G Bravo S Casado MP Chmeissani M Crespo JM Fernandez E Fernandez Bosman A Garrido L Grauges E Lopez J Martinez M Merino G Pacheco A Paneque D Ruiz H Colaleo A Creanza D De Filippis N de Palma M Iaselli G Maggi G 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 Azzurri P Barklow T Buchmuller O Cattaneo M Cerutti F Clerbaux B Drevermann H Forty RW Frank M Gianotti F Greening TC Hansen JB Harvey J Hutchcroft DE Janot P Jost B Kado M Mato P Moutoussi A Ranjard F ROLANDI, LUIGI Schlatter D Sguazzoni G Tejessy W Teubert F Valassi A Videau I Ward JJ Badaud E Dessagne S Falvard A Fayolle D Gay P Jousset J Michel B Monteil S Pallin D Pascolo JM Perret P Hansen JD Hansen JR Hansen PH Nilsson BS Kyriakis A Markou C Simopoulou E Vayaki A Zachariadou K Blondel A Brient JC Machefert F Rouge A Swynghedauw M Tanaka R Videau H Ciulli V Focardi E Parrini G Antonelli A Antonelli M Bencivenni G Bossi F Capon G Chiarella V Laurelli P Mannocchi G Murtas GP Passalacqua L Kennedy J Lynch JG Negus P O'Shea V Thompson AS Wasserbaech S Cavanaugh R Dhamotharan S Geweniger C Hanke P Hepp V Kluge EE Leibenguth G Putzer A Stenzel H Tittel K Wunsch M Beuselinck R Cameron W Davies G Dornan PJ Girone M Hill RD Marinelli N Nowell J Rutherford SA Sedgbeer JK Thompson JC White R Ghete VM Girtler P Kneringer E Kuhn D Rudolph G Bouhova Thacker E Bowdery CK Clarke DP Ellis G Finch AJ Foster F Hughes G Jones RWL Pearson MR Robertson NA Smizanska M van der Aa O Delaere C Lemaitre V Blumenschein U Holldorfer F Jakobs K Kayser F Kleinknecht K Muller AS Quast G Renk B Sander HG Schmeling S Wachsmuth H Zeitnitz C Ziegler T Bonissent A Coyle P Curtil C Ealet A Fouchez D Payre P Tilquin A Ragusa F David A Dietl H Ganis G Huttmann K Lutjens G Manner W Moser HG Settles R Wolf G Boucrot J Callot O Davier M Duflot L Grivaz JF Heusse P Jacholkowska A Serin L Veillet JJ de Regie JBD Yuan C Bagliesi G Boccali T Foa L Giammanco A Giassi A LIGABUE, FRANCO Messineo A Palla F Sanguinetti G Sciaba A Tenchini R Venturi A Verdini PG Awunor O Blair GA Cowan G Garcia Bellido A Green MG Jones LT Medcalf T Misiejuk A Strong JA Teixeira Dias P Clifft RW Edgecock TR Norton PR Tomalin IR Bloch Devaux B Boumediene D Colas P Fabbro B Lancon E Lemaire MC Locci E Perez P Rander J Seager P Tuchming B Vallage B Konstantinidis N Litke AM Taylor G Booth CN Cartwright S Combley F Hodgson PN Lehto M Thompson LF Bohrer A Brandt S Grupen C Hess J Ngac A Prange G Sieler U Borean C Giannini G He H Putz J Rothberg J Armstrong SR Berkelman K Cranmer K Ferguson DPS Gao Y Gonzalez S Hayes OJ Hu H Jin S Kile J McNamara PA Nielsen J Pan YB von Wimmersperg Toeller JH Wiedenmann W Wu J Wu SL Wu X Zobernig G Dissertori G. mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2002
Rivista:	PHYSICS LETTERS. SECTION B
Abstract:	A search for events with a photon pair arising from the decay of a Higgs boson produced in association with a fermion pair, is performed in 893 pb(-1) of data recorded by the ALEPH detector at LEP at centre-of-mass energies up to 209 GeV. No excess of such events is found over the expected background. An upper limit is derived on the product of the e(+)e(-) --> HZ cross section and the H --> gammagamma branching fraction as a function of the Higgs boson mass. A fermiophobic Higgs boson produced with the Standard Model cross section is excluded at 95% confidence level for all masses below 105.4 GeV/c(2). (C) 2002 Elsevier Science B.V. All rights reserved.
Handle:	http://hdl.handle.net/11384/5814
Appare nelle tipologie:	1.1 Articolo in rivista

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