Abstract
This paper describes topological searches for neutral scalar bosons S0 produced in association with a Z0 boson via the Bjorken process e+e- → S0Z0 at centre-of-mass energies of 91 GeV and 183-209 GeV. These searches are based on studies of the recoil mass spectrum of Z0 → e+e- and μ+μ-and on a search for S0Z0 with Z0 → νν̄ and S0 → e+e- or photons. They cover the decays of the S0 into an arbitrary combination of hadrons, leptons, photons and invisible particles as well as the possibility that it might be stable. No indication for a signal is found in the data and upper limits on the cross section of the Bjorken process are calculated. Cross-section limits are given in terms of a scale factor k with respect to the Standard Model cross section for the Higgs-strahlung process e+e- → HSM0Z0. These results can be interpreted in general scenarios independently of the decay modes of the S0. The examples considered here are the production of a single new scalar particle with a decay width smaller than the detector mass resolution, and for the first time, two scenarios with continuous mass distributions, due to a single very broad state or several states close in mass.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 311-329 |
| Number of pages | 19 |
| Journal | European Physical Journal C |
| Volume | 27 |
| Issue number | 3 |
| DOIs | |
| State | Published - Apr 2003 |
| Externally published | Yes |
ASJC Scopus subject areas
- Engineering (miscellaneous)
- Physics and Astronomy (miscellaneous)
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In: European Physical Journal C, Vol. 27, No. 3, 04.2003, p. 311-329.
Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Decay-mode independent searches for new scalar bosons with the OPAL detector at LEP
T2 - The OPAL collaboration
AU - Abbiendi, G.
AU - Ainsley, C.
AU - Åkesson, P. F.
AU - Alexander, G.
AU - Allison, J.
AU - Amaral, P.
AU - Anagnostou, G.
AU - Anderson, K. J.
AU - Arcelli, S.
AU - Asai, S.
AU - Axen, D.
AU - Azuelos, G.
AU - Bailey, I.
AU - Barberio, E.
AU - Barlow, R. J.
AU - Batley, R. J.
AU - Bechtle, P.
AU - Behnke, T.
AU - Bell, K. W.
AU - Bell, P. J.
AU - Bella, G.
AU - Bellerive, A.
AU - Benelli, G.
AU - Bethke, S.
AU - Biebel, O.
AU - Bloodworth, I. J.
AU - Boeriu, O.
AU - Bock, P.
AU - Bonacorsi, D.
AU - Boutemeur, M.
AU - Braibant, S.
AU - Brigliadori, L.
AU - Brown, R. M.
AU - Buesser, K.
AU - Burckhart, H. J.
AU - Cammin, J.
AU - Campana, S.
AU - Carnegie, R. K.
AU - Caron, B.
AU - Carter, A. A.
AU - Carter, J. R.
AU - Chang, C. Y.
AU - Charlton, D. G.
AU - Cohen, I.
AU - Csilling, A.
AU - Cuffiani, M.
AU - Dado, S.
AU - Dallavalle, G. M.
AU - Dallison, S.
AU - De Roeck, A.
AU - De Wolf, E. A.
AU - Desch, K.
AU - Donkers, M.
AU - Dubbert, J.
AU - Duchovni, E.
AU - Duckeck, G.
AU - Duerdoth, I. P.
AU - Elfgren, E.
AU - Etzion, E.
AU - Fabbri, F.
AU - Feld, L.
AU - Ferrari, P.
AU - Fiedler, F.
AU - Fleck, I.
AU - Ford, M.
AU - Frey, A.
AU - Fürtjes, A.
AU - Gagnon, P.
AU - Gary, J. W.
AU - Gaycken, G.
AU - Geich-Gimbel, C.
AU - Giacomelli, G.
AU - Giacomelli, P.
AU - Giunta, M.
AU - Goldberg, J.
AU - Gross, E.
AU - Grunhaus, J.
AU - Gruwé, M.
AU - Günther, P. O.
AU - Gupta, A.
AU - Hajdu, C.
AU - Hamann, M.
AU - Hanson, G. G.
AU - Harder, K.
AU - Harel, A.
AU - Harin-Dirac, M.
AU - Hauschild, M.
AU - Hauschildt, J.
AU - Hawkings, R.
AU - Hemingway, R. J.
AU - Hensel, C.
AU - Herten, G.
AU - Heuer, R. D.
AU - Hill, J. C.
AU - Hoffman, K.
AU - Homer, R. J.
AU - Horváth, D.
AU - Howard, R.
AU - Huntemeyer, P.
AU - Igo-Kemenes, P.
AU - Ishii, K.
AU - Jeremie, H.
AU - Jovanovic, P.
AU - Junk, T. R.
AU - Kanaya, N.
AU - Kanzaki, J.
AU - Karapetian, G.
AU - Karlen, D.
AU - Kartvelishvili, V.
AU - Kawagoe, K.
AU - Kawamoto, T.
AU - Keeler, R. K.
AU - Kellogg, R. G.
AU - Kennedy, B. W.
AU - Kim, D. H.
AU - Klein, K.
AU - Klier, A.
AU - Klute, M.
AU - Kluth, S.
AU - Kobayashi, T.
AU - Kobel, M.
AU - Kokott, T. P.
AU - Komamiya, S.
AU - Kormos, L.
AU - Kowalewski, R. V.
AU - Krämer, T.
AU - Kress, T.
AU - Krieger, P.
AU - von Krogh, J.
AU - Krop, D.
AU - Kupper, M.
AU - Kyberd, P.
AU - Lafferty, G. D.
AU - Landsman, H.
AU - Lanske, D.
AU - Layter, J. G.
AU - Leins, A.
AU - Lellouch, D.
AU - Letts, J.
AU - Levinson, L.
AU - Lillich, J.
AU - Lloyd, S. L.
AU - Loebinger, F. K.
AU - Lu, J.
AU - Ludwig, J.
AU - Macpherson, A.
AU - Mader, W.
AU - Marcellini, S.
AU - Marchant, T. E.
AU - Martin, A. J.
AU - Martin, J. P.
AU - Masetti, G.
AU - Mashimo, T.
AU - Mättig, P.
AU - McDonald, W. J.
AU - McKenna, J.
AU - McMahon, T. J.
AU - McPherson, R. A.
AU - Meijers, F.
AU - Mendez-Lorenzo, P.
AU - Menges, W.
AU - Merritt, F. S.
AU - Mes, H.
AU - Michelini, A.
AU - Mihara, S.
AU - Mikenberg, G.
AU - Miller, D. J.
AU - Moed, S.
AU - Mohr, W.
AU - Mori, T.
AU - Mutter, A.
AU - Nagai, K.
AU - Nakamura, I.
AU - Neal, H. A.
AU - Nisius, R.
AU - O'Neale, S. W.
AU - Oh, A.
AU - Okpara, A.
AU - Oreglia, M. J.
AU - Orito, S.
AU - Pahl, C.
AU - Pásztor, G.
AU - Pater, J. R.
AU - Patrick, G. N.
AU - Pilcher, J. E.
AU - Pinfold, J.
AU - Plane, D. E.
AU - Poli, B.
AU - Polok, J.
AU - Pooth, O.
AU - Przybycień, M.
AU - Quadt, A.
AU - Rabbertz, K.
AU - Rembser, C.
AU - Renkel, P.
AU - Rick, H.
AU - Roney, J. M.
AU - Rosati, S.
AU - Rozen, Y.
AU - Runge, K.
AU - Rust, D. R.
AU - Sachs, K.
AU - Saeki, T.
AU - Sahr, O.
AU - Sarkisyan, E. K.G.
AU - Schaile, A. D.
AU - Schaile, O.
AU - Scharff-Hansen, P.
AU - Schieck, J.
AU - Schoerner-Sadenius, T.
AU - Schroder, M.
AU - Schumacher, M.
AU - Schwick, C.
AU - Scott, W. G.
AU - Seuster, R.
AU - Shears, T. G.
AU - Shen, B. C.
AU - Shepherd-Themistocleous, C. H.
AU - Sherwood, P.
AU - Siroli, G.
AU - Skuja, A.
AU - Smith, A. M.
AU - Sobie, R.
AU - Soldner-Rembold, S.
AU - Spagnolo, S.
AU - Spano, F.
AU - Stahl, A.
AU - Stephens, K.
AU - Strom, D.
AU - Strähmer, R.
AU - Tarem, S.
AU - Tasevsky, M.
AU - Taylor, R. J.
AU - Teuscher, R.
AU - Thomson, M. A.
AU - Torrence, E.
AU - Toya, D.
AU - Tran, P.
AU - Trefzger, T.
AU - Tricoli, A.
AU - Trigger, I.
AU - Trócsányi, Z.
AU - Tsur, E.
AU - Turner-Watson, M. F.
AU - Ueda, I.
AU - Ujvári, B.
AU - Vachon, B.
AU - Vollmer, C. F.
AU - Vannerem, P.
AU - Verzocchi, M.
AU - Voss, H.
AU - Vossebeld, J.
AU - Waller, D.
AU - Ward, C. P.
AU - Ward, D. R.
AU - Watkins, P. M.
AU - Watson, N. K.
AU - Wells, P. S.
AU - Wengler, T.
AU - Wermes, N.
AU - Wetterling, D.
AU - Wilson, G. W.
AU - Wilson, J. A.
AU - Wolf, G.
AU - Wyatt, T. R.
AU - Yamashita, S.
AU - Zacek, V.
AU - Zer-Zion, D.
AU - Zivkovic, L.
PY - 2003/4
Y1 - 2003/4
N2 - This paper describes topological searches for neutral scalar bosons S0 produced in association with a Z0 boson via the Bjorken process e+e- → S0Z0 at centre-of-mass energies of 91 GeV and 183-209 GeV. These searches are based on studies of the recoil mass spectrum of Z0 → e+e- and μ+μ-and on a search for S0Z0 with Z0 → νν̄ and S0 → e+e- or photons. They cover the decays of the S0 into an arbitrary combination of hadrons, leptons, photons and invisible particles as well as the possibility that it might be stable. No indication for a signal is found in the data and upper limits on the cross section of the Bjorken process are calculated. Cross-section limits are given in terms of a scale factor k with respect to the Standard Model cross section for the Higgs-strahlung process e+e- → HSM0Z0. These results can be interpreted in general scenarios independently of the decay modes of the S0. The examples considered here are the production of a single new scalar particle with a decay width smaller than the detector mass resolution, and for the first time, two scenarios with continuous mass distributions, due to a single very broad state or several states close in mass.
AB - This paper describes topological searches for neutral scalar bosons S0 produced in association with a Z0 boson via the Bjorken process e+e- → S0Z0 at centre-of-mass energies of 91 GeV and 183-209 GeV. These searches are based on studies of the recoil mass spectrum of Z0 → e+e- and μ+μ-and on a search for S0Z0 with Z0 → νν̄ and S0 → e+e- or photons. They cover the decays of the S0 into an arbitrary combination of hadrons, leptons, photons and invisible particles as well as the possibility that it might be stable. No indication for a signal is found in the data and upper limits on the cross section of the Bjorken process are calculated. Cross-section limits are given in terms of a scale factor k with respect to the Standard Model cross section for the Higgs-strahlung process e+e- → HSM0Z0. These results can be interpreted in general scenarios independently of the decay modes of the S0. The examples considered here are the production of a single new scalar particle with a decay width smaller than the detector mass resolution, and for the first time, two scenarios with continuous mass distributions, due to a single very broad state or several states close in mass.
UR - http://www.scopus.com/inward/record.url?scp=0037397308&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0037397308&partnerID=8YFLogxK
U2 - 10.1140/epjc/s2002-01115-1
DO - 10.1140/epjc/s2002-01115-1
M3 - Article
AN - SCOPUS:0037397308
SN - 1434-6044
VL - 27
SP - 311
EP - 329
JO - European Physical Journal C
JF - European Physical Journal C
IS - 3
ER -