Search for gamma gamma decays of a Higgs boson produced in association with a fermion pair in e+ e- collisions at LEP

Barate, R.; Decamp, D.; Ghez, P.; Goy, C.; Jezequel, S.; Lees, J.P.; Martin, F.; Merle, E.; Minard, M.N.; Pietrzyk, B.; Bravo, S.; Casado, M.P.; Chmeissani, M.; Crespo, J.M.; Fernandez, E.; Fernandez Bosman, M.; Garrido, L.; Grauges, E.; Lopez, J.; Martinez, M.; Merino, G.; Miquel, R.; Mir, L.M.; 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.; Boix, G.; Buchmuller, O.; Cattaneo, M.; Cerutti, F.; Dissertori, G.; Drevermann, H.; Forty, R.W.; Frank, M.; Gianotti, F.; Greening, T.C.; Hansen, J.B.; Harvey, J.; Janot, P.; Jost, B.; Kado, M.; Lemaitre, V.; Maley, P.; Mato, P.; Minten, A.; Moutoussi, A.; Ranjard, F.; Rolandi, G.; Schlatter, D.; Schmitt, M.; Schneider, O.; Spagnolo, P.; Tejessy, W.; Teubert, F.; Tournefier, E.; Valassi, A.; Ward, J.J.; Wright, A.E.; Ajaltouni, Z.; Badaud, F.; Chazelle, G.; Deschamps, O.; Dessagne, S.; Falvard, A.; Gay, P.; Guicheney, C.; Henrard, P.; Jousset, J.; Michel, B.; Monteil, S.; Montret, J.C.; Pallin, D.; Pascolo, J.M.; Perret, P.; Podlyski, F.; Hansen, J.D.; Hansen, J.R.; Hansen, P.H.; Nilsson, B.S.; Waananen, A.; Daskalakis, G.; Kyriakis, A.; Markou, C.; Simopoulou, E.; Vayaki, A.; Blondel, A.; Brient, J.C.; Machefert, F.; Rouge, A.; Swynghedauw, M.; Tanaka, R.; Videau, H.; Focardi, E.; Parrini, G.; Zachariadou, K.; Antonelli, A.; Antonelli, M.; Bencivenni, G.; Bologna, G.; Bossi, F.; Campana, P.; Capon, G.; Chiarella, V.; Laurelli, P.; Mannocchi, G.; Murtas, F.; Murtas, G.P.; Passalacqua, L.; Pepe Altarelli, M.; Chalmers, M.; Halley, A.W.; Kennedy, J.; Lynch, J.G.; Negus, P.; O'Shea, V.; Raeven, B.; Smith, D.; Teixeira Dias, P.; Thompson, A.S.; Cavanaugh, R.; Dhamotharan, S.; Geweniger, C.; Hanke, P.; Hepp, V.; Kluge, E.E.; Leibenguth, G.; Putzer, A.; Tittel, K.; Werner, S.; Wunsch, M.; Beuselinck, R.; Binnie, D.M.; Cameron, W.; Davies, G.; Dornan, P.J.; Girone, M.; Marinelli, N.; Nowell, J.; Przysiezniak, H.; Sedgbeer, J.K.; Thompson, J.C.; Thomson, E.J.; White, R.; Ghete, V.M.; Girtler, P.; Kneringer, E.; Kuhn, D.; Rudolph, G.; Bowdery, C.K.; Buck, P.G.; Clarke, D.P.; Ellis, G.; Finch, A.J.; Foster, F.; Hughes, G.; Jones, R.W.L.; Robertson, N.A.; Smizanska, M.; Giehl, I.; Holldorfer, F.; Jakobs, K.; Kleinknecht, K.; Krocker, M.; Muller, A.S.; Nurnberger, H.A.; Quast, G.; Renk, B.; Rohne, E.; Sander, H.G.; Schmeling, S.; Wachsmuth, H.; Zeitnitz, C.; Ziegler, T.; Bonissent, A.; Carr, J.; Coyle, P.; Curtil, C.; Ealet, A.; Fouchez, D.; Leroy, O.; Kachelhoffer, T.; Payre, P.; Rousseau, D.; Tilquin, A.; Aleppo, M.; Gilardoni, S.S.; Ragusa, F.; Dietl, H.; Ganis, G.; Heister, A.; Huttmann, K.; Lutjens, G.; Mannert, C.; Manner, W.; Moser, H.G.; Schael, S.; Settles, R.; Stenzel, H.; Wiedenmann, W.; Wolf, G.; Azzurri, P.; Boucrot, J.; Callot, O.; Davier, M.; Duflot, L.; Grivaz, J.F.; Heusse, P.; Jacholkowska, A.; Serin, L.; Veillet, J.J.; Videau, I.; de Vivie de Regie, J.B.; Zerwas, D.; Bagliesi, G.; Boccali, T.; Calderini, G.; Ciulli, V.; Foa, L.; Giammanco, A.; Giassi, A.; Ligabue, F.; Messineo, A.; Palla, F.; Rizzo, G.; Sanguinetti, G.; Sciaba, A.; Sguazzoni, G.; Tenchini, R.; Venturi, A.; Verdini, P.G.; Blair, G.A.; Coles, J.; Cowan, G.; Green, M.G.; Hutchcroft, D.E.; Jones, L.T.; Medcalf, T.; Strong, J.A.; von Wimmersperg Toeller, J.H.; Clifft, R.W.; Edgecock, T.R.; Norton, P.R.; Tomalin, I.R.; Bloch Devaux, B.; Boumediene, D.; Colas, P.; Fabbro, B.; Faif, G.; Lancon, E.; Lemaire, M.C.; Locci, E.; Perez, P.; Rander, J.; Renardy, J.F.; Rosowsky, A.; Seager, P.; Trabelsi, A.; Tuchming, B.; Vallage, B.; Black, S.N.; Dann, J.H.; Loomis, C.; Kim, H.Y.; Konstantinidis, N.; Litke, A.M.; Mcneil, M.A.; Taylor, G.; Booth, C.N.; Cartwright, S.; Combley, F.; Hodgson, P.N.; Lehto, M.; Thompson, L.F.; Affholderbach, K.; Boehrer, A.; Brandt, S.; Grupen, C.; Hess, J.; Misiejuk, A.; Prange, G.; Sieler, U.; Borean, C.; Giannini, G.; Gobbo, B.; He, H.; Putz, J.; Rothberg, J.; Wasserbaech, S.; Armstrong, S.R.; Cranmer, K.; Elmer, P.; Ferguson, D.P.S.; Gao, Y.; Gonzalez, S.; Hayes, O.J.; Hu, H.; Jin, S.; Kile, J.; Mcnamara, P.A.; Nielsen, J.; Orejudos, W.; Pan, Y.B.; Saadi, Y.; Scott, I.J.; Walsh, J.; Wu, J.; S. L., W.; Wu, X.; Zobernig, G.

doi:10.1016/S0370-2693(00)00821-2

A search for gamma-gamma decays of a Higgs boson is performed in the data sample collected at LEP with the ALEPH detector between 1991 and 1999. This corresponds to an integrated luminosity of 672 pb-1 at centre-of-mass energies ranging from 88 to 202 GeV.The search is based on topologies arising from a Higgs boson produced in association with a fermion pair via the Higgs-strahlung process Image , with Image or Image . Twenty-two events are selected in the data, while 28 events are expected from standard model processes. An upper limit is derived, as a function of the Higgs boson mass, on the product of the Image cross section and the H→γγ branching fraction. In particular, a fermiophobic Higgs boson produced with the standard model cross section is excluded at 95% confidence level for all masses below 100.7 GeV/c2.

Search for gamma gamma decays of a Higgs boson produced in association with a fermion pair in e+ e- collisions at LEP / R. Barate, D. Decamp, P. Ghez, C. Goy, S. Jezequel, J. P. Lees, F. Martin, E. Merle, M.N. Minard, B. Pietrzyk, S. Bravo, M. P. Casado, M. Chmeissani, J. M. Crespo, E. Fernandez, M. Fernandez-Bosman, L. Garrido, E. Grauges, J. Lopez, M. Martinez, G. Merino, R. Miquel, L. M. Mir, A. Pacheco, D. Paneque, H. Ruiz, A. Colaleo, D. Creanza, N. De Filippis, M. De Palma, G. Iaselli, G. Maggi, M. Maggi, S. Nuzzo, A. Ranieri, G. Raso, F. Ruggieri, G. Selvaggi, L. Silvestris, P. Tempesta, A. Tricomi, G. Zito, X. Huang, J. Lin, Q. Ouyang, T. Wang, Y. Xie, R. Xu, S. Xue, J. Zhang, L. Zhang, W. Zhao, D. Abbaneo, G. Boix, O. Buchmuller, M. Cattaneo, F. Cerutti, G. Dissertori, H. Drevermann, R. W. Forty, M. Frank, F. Gianotti, T. C. Greening, J. B. Hansen, J. Harvey, P. Janot, B. Jost, M. Kado, V. Lemaitre, P. Maley, P. Mato, A. Minten, A. Moutoussi, F. Ranjard, G. Rolandi, D. Schlatter, M. Schmitt, O. Schneider, P. Spagnolo, W. Tejessy, F. Teubert, E. Tournefier, A. Valassi, J. J. Ward, A. E. Wright, Z. Ajaltouni, F. Badaud, G. Chazelle, O. Deschamps, S. Dessagne, A. Falvard, P. Gay, C. Guicheney, P. Henrard, J. Jousset, B. Michel, S. Monteil, J. C. Montret, D. Pallin, J. M. Pascolo, P. Perret, F. Podlyski, J. D. Hansen, J. R. Hansen, P. H. Hansen, B. S. Nilsson, A. Waananen, G. Daskalakis, A. Kyriakis, C. Markou, E. Simopoulou, A. Vayaki, A. Blondel, J. C. Brient, F. Machefert, A. Rouge, M. Swynghedauw, R. Tanaka, H. Videau, E. Focardi, G. Parrini, K. Zachariadou, A. Antonelli, M. Antonelli, G. Bencivenni, G. Bologna, F. Bossi, P. Campana, G. Capon, V. Chiarella, P. Laurelli, G. Mannocchi, F. Murtas, G. P. Murtas, L. Passalacqua, M. Pepe-Altarelli, M. Chalmers, A. W. Halley, J. Kennedy, J. G. Lynch, P. Negus, V. O'Shea, B. Raeven, D. Smith, P. Teixeira-Dias, A. S. Thompson, R. Cavanaugh, S. Dhamotharan, C. Geweniger, P. Hanke, V. Hepp, E. E. Kluge, G. Leibenguth, A. Putzer, K. Tittel, S. Werner, M. Wunsch, R. Beuselinck, D. M. Binnie, W. Cameron, G. Davies, P. J. Dornan, M. Girone, N. Marinelli, J. Nowell, H. Przysiezniak, J. K. Sedgbeer, J. C. Thompson, Evelyn J. Thomson, R. White, V. M. Ghete, P. Girtler, E. Kneringer, D. Kuhn, G. Rudolph, C. K. Bowdery, P. G. Buck, D. P. Clarke, G. Ellis, A. J. Finch, F. Foster, G. Hughes, R. W. L. Jones, N. A. Robertson, M. Smizanska, I. Giehl, F. Holldorfer, K. Jakobs, K. Kleinknecht, M. Krocker, A. S. Muller, H. A. Nurnberger, G. Quast, B. Renk, E. Rohne, H.G. Sander, S. Schmeling, H. Wachsmuth, C. Zeitnitz, T. Ziegler, A. Bonissent, J. Carr, P. Coyle, C. Curtil, A. Ealet, D. Fouchez, O. Leroy, T. Kachelhoffer, P. Payre, D. Rousseau, A. Tilquin, M. Aleppo, Simone S. Gilardoni, F. Ragusa, H. Dietl, G. Ganis, A. Heister, K. Huttmann, G. Lutjens, C. Mannert, W. Manner, H. G. Moser, S. Schael, R. Settles, H. Stenzel, W. Wiedenmann, G. Wolf, P. Azzurri, J. Boucrot, O. Callot, M. Davier, L. Duflot, J. F. Grivaz, P. Heusse, A. Jacholkowska, L. Serin, J. J. Veillet, I. Videau, J. B. de Vivie de Regie, D. Zerwas, G. Bagliesi, T. Boccali, G. Calderini, V. Ciulli, L. Foa, A. Giammanco, A. Giassi, F. Ligabue, A. Messineo, F. Palla, G. Rizzo, G. Sanguinetti, A. Sciaba, G. Sguazzoni, R. Tenchini, A. Venturi, P. G. Verdini, G. A. Blair, J. Coles, G. Cowan, M. G. Green, D. E. Hutchcroft, L. T. Jones, T. Medcalf, J. A. Strong, J. H. von Wimmersperg-Toeller, R. W. Clifft, T. R. Edgecock, P. R. Norton, I. R. Tomalin, B. Bloch-Devaux, D. Boumediene, P. Colas, B. Fabbro, G. Faif, E. Lancon, M. C. Lemaire, E. Locci, P. Perez, J. Rander, J. F. Renardy, A. Rosowsky, P. Seager, A. Trabelsi, B. Tuchming, B. Vallage, S. N. Black, J. H. Dann, C. Loomis, H. Y. Kim, N. Konstantinidis, A. M. Litke, M. A. McNeil, G. Taylor, C. N. Booth, S. Cartwright, F. Combley, P. N. Hodgson, M. Lehto, L. F. Thompson, K. Affholderbach, A. Boehrer, S. Brandt, C. Grupen, J. Hess, A. Misiejuk, G. Prange, U. Sieler, C. Borean, G. Giannini, B. Gobbo, H. He, J. Putz, J. Rothberg, S. Wasserbaech, S. R. Armstrong, K. Cranmer, P. Elmer, D. P. S. Ferguson, Y. Gao, S. Gonzalez, O. J. Hayes, H. Hu, S. Jin, J. Kile, P. A. McNamara, J. Nielsen, W. Orejudos, Y. B. Pan, Y. Saadi, I. J. Scott, J. Walsh, J. Wu, S.L. Wu, X. Wu, G. Zobernig. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 487:3-4(2000), pp. 241-252. [10.1016/S0370-2693(00)00821-2]

Search for gamma gamma decays of a Higgs boson produced in association with a fermion pair in e+ e- collisions at LEP

R. Barate;D. Decamp;P. Ghez;C. Goy;S. Jezequel;J. P. Lees;F. Martin;E. Merle;M. N. Minard;B. Pietrzyk;S. Bravo;M. P. Casado;M. Chmeissani;J. M. Crespo;E. Fernandez;M. Fernandez Bosman;L. Garrido;E. Grauges;J. Lopez;M. Martinez;G. Merino;R. Miquel;L. M. Mir;A. Pacheco;D. Paneque;H. Ruiz;A. Colaleo;D. Creanza;N. De Filippis;M. De Palma;G. Iaselli;G. Maggi;M. Maggi;S. Nuzzo;A. Ranieri;G. Raso;F. Ruggieri;G. Selvaggi;L. Silvestris;P. Tempesta;A. Tricomi;G. Zito;X. Huang;J. Lin;Q. Ouyang;T. Wang;Y. Xie;R. Xu;S. Xue;J. Zhang;L. Zhang;W. Zhao;D. Abbaneo;G. Boix;O. Buchmuller;M. Cattaneo;F. Cerutti;G. Dissertori;H. Drevermann;R. W. Forty;M. Frank;F. Gianotti;T. C. Greening;J. B. Hansen;J. Harvey;P. Janot;B. Jost;M. Kado;V. Lemaitre;P. Maley;P. Mato;A. Minten;A. Moutoussi;F. Ranjard;G. Rolandi;D. Schlatter;M. Schmitt;O. Schneider;P. Spagnolo;W. Tejessy;F. Teubert;E. Tournefier;A. Valassi;J. J. Ward;A. E. Wright;Z. Ajaltouni;F. Badaud;G. Chazelle;O. Deschamps;S. Dessagne;A. Falvard;P. Gay;C. Guicheney;P. Henrard;J. Jousset;B. Michel;S. Monteil;J. C. Montret;D. Pallin;J. M. Pascolo;P. Perret;F. Podlyski;J. D. Hansen;J. R. Hansen;P. H. Hansen;B. S. Nilsson;A. Waananen;G. Daskalakis;A. Kyriakis;C. Markou;E. Simopoulou;A. Vayaki;A. Blondel;J. C. Brient;F. Machefert;A. Rouge;M. Swynghedauw;R. Tanaka;H. Videau;E. Focardi;G. Parrini;K. Zachariadou;A. Antonelli;M. Antonelli;G. Bencivenni;G. Bologna;F. Bossi;P. Campana;G. Capon;V. Chiarella;P. Laurelli;G. Mannocchi;F. Murtas;G. P. Murtas;L. Passalacqua;M. Pepe Altarelli;M. Chalmers;A. W. Halley;J. Kennedy;J. G. Lynch;P. Negus;V. O'Shea;B. Raeven;D. Smith;P. Teixeira Dias;A. S. Thompson;R. Cavanaugh;S. Dhamotharan;C. Geweniger;P. Hanke;V. Hepp;E. E. Kluge;G. Leibenguth;A. Putzer;K. Tittel;S. Werner;M. Wunsch;R. Beuselinck;D. M. Binnie;W. Cameron;G. Davies;P. J. Dornan;M. Girone;N. Marinelli;J. Nowell;H. Przysiezniak;J. K. Sedgbeer;J. C. Thompson;Evelyn J. Thomson;R. White;V. M. Ghete;P. Girtler;E. Kneringer;D. Kuhn;G. Rudolph;C. K. Bowdery;P. G. Buck;D. P. Clarke;G. Ellis;A. J. Finch;F. Foster;G. Hughes;R. W. L. Jones;N. A. Robertson;M. Smizanska;I. Giehl;F. Holldorfer;K. Jakobs;K. Kleinknecht;M. Krocker;A. S. Muller;H. A. Nurnberger;G. Quast;B. Renk;E. Rohne;H. G. Sander;S. Schmeling;H. Wachsmuth;C. Zeitnitz;T. Ziegler;A. Bonissent;J. Carr;P. Coyle;C. Curtil;A. Ealet;D. Fouchez;O. Leroy;T. Kachelhoffer;P. Payre;D. Rousseau;A. Tilquin;M. Aleppo;Simone S. Gilardoni;F. Ragusa;H. Dietl;G. Ganis;A. Heister;K. Huttmann;G. Lutjens;C. Mannert;W. Manner;H. G. Moser;S. Schael;R. Settles;H. Stenzel;W. Wiedenmann;G. Wolf;P. Azzurri;J. Boucrot;O. Callot;M. Davier;L. Duflot;J. F. Grivaz;P. Heusse;A. Jacholkowska;L. Serin;J. J. Veillet;I. Videau;J. B. de Vivie de Regie;D. Zerwas;G. Bagliesi;T. Boccali;G. Calderini;V. Ciulli;L. Foa;A. Giammanco;A. Giassi;F. Ligabue;A. Messineo;F. Palla;G. Rizzo;G. Sanguinetti;A. Sciaba;G. Sguazzoni;R. Tenchini;A. Venturi;P. G. Verdini;G. A. Blair;J. Coles;G. Cowan;M. G. Green;D. E. Hutchcroft;L. T. Jones;T. Medcalf;J. A. Strong;J. H. von Wimmersperg Toeller;R. W. Clifft;T. R. Edgecock;P. R. Norton;I. R. Tomalin;B. Bloch Devaux;D. Boumediene;P. Colas;B. Fabbro;G. Faif;E. Lancon;M. C. Lemaire;E. Locci;P. Perez;J. Rander;J. F. Renardy;A. Rosowsky;P. Seager;A. Trabelsi;B. Tuchming;B. Vallage;S. N. Black;J. H. Dann;C. Loomis;H. Y. Kim;N. Konstantinidis;A. M. Litke;M. A. McNeil;G. Taylor;C. N. Booth;S. Cartwright;F. Combley;P. N. Hodgson;M. Lehto;L. F. Thompson;K. Affholderbach;A. Boehrer;S. Brandt;C. Grupen;J. Hess;A. Misiejuk;G. Prange;U. Sieler;C. Borean;G. Giannini;B. Gobbo;H. He;J. Putz;J. Rothberg;S. Wasserbaech;S. R. Armstrong;K. Cranmer;P. Elmer;D. P. S. Ferguson;Y. Gao;S. Gonzalez;O. J. Hayes;H. Hu;S. Jin;J. Kile;P. A. McNamara;J. Nielsen;W. Orejudos;Y. B. Pan;Y. Saadi;I. J. Scott;J. Walsh;J. Wu;S. L. Wu;X. Wu;G. Zobernig

2000

Abstract

A search for gamma-gamma decays of a Higgs boson is performed in the data sample collected at LEP with the ALEPH detector between 1991 and 1999. This corresponds to an integrated luminosity of 672 pb-1 at centre-of-mass energies ranging from 88 to 202 GeV.The search is based on topologies arising from a Higgs boson produced in association with a fermion pair via the Higgs-strahlung process Image , with Image or Image . Twenty-two events are selected in the data, while 28 events are expected from standard model processes. An upper limit is derived, as a function of the Higgs boson mass, on the product of the Image cross section and the H→γγ branching fraction. In particular, a fermiophobic Higgs boson produced with the standard model cross section is excluded at 95% confidence level for all masses below 100.7 GeV/c2.

Scheda breve

Scheda completa

Scheda completa (DC)

	Parole chiave
	
			standard model ; Higgs boson ; elementary particle physics ; LEP ; accelerators
		
	Settori scientifico-disciplinari dell'articolo
	
			Settore FIS/01 - Fisica Sperimentale
		
	Data di pubblicazione
	
			2000
		
	Rivista in ANCE
	
			PHYSICS LETTERS. SECTION B
		
	DOI
	
			https://dx.doi.org/10.1016/S0370-2693(00)00821-2
		
	Tipologia
	
			Article (author)
		
	Appare nelle tipologie:
	
			01 - Articolo su periodico

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