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Search for Charged Higgs Bosos in e+e- Collisions at sqrts(s) = 189-209 GeV (2008) |
- Abbiendi, G,
- Ainsley, C,
- Åkesson, P F,
- Alexander, G,
- Anagnostou, G,
- Anderson, K J,
- Asai, S,
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- Barberio, E,
- Barillari, T,
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- Bell, K W,
- Bell, P J,
- Bella, G,
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- Benelli, G,
- Bethke, S,
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- Boeriu, O,
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- Dubbert, J,
- Duchovni, E,
- Duckeck, G,
- Duerdoth, I P,
- Etzion, E,
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- Fiedler, F,
- Fleck, I,
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- Geich-Gimbel, C,
- Giacomelli, G,
- Giacomelli, P,
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- Gruwé, M,
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- Hauschild, M,
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- Hawkings, R,
- Herten, G,
- Heuer, R D,
- Hill, J C,
- Horváth, D,
- Igo-Kemenes, P,
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- Schörner-Sadenius, T,
- Schröder, M,
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- Sobie, R J,
- Söldner-Rembold, S,
- Spanó, F,
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- Strom, D,
- Ströhmer, R,
- Tarem, S,
- Tasevsky, M,
- Teuscher, R,
- Thomson, M A,
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- Trócsányi, Z L,
- Tsur, E,
- Turner-Watson, M F,
- Ueda, I,
- Ujvári, B,
- Vollmer, C F,
- Vannerem, P,
- Vertesi, R,
- Verzocchi, M,
- Voss, H,
- Vossebeld, J,
- Ward, C P,
- Ward, D R,
- Watkins, P M,
- Watson, A T,
- Watson, N K,
- Wells, P S,
- Wengler, T,
- Wermes, N,
- Wilson, G W,
- Wilson, J A,
- Wolf, G,
- Wyatt, T R,
- Yamashita, S,
- Zer-Zion, D,
- Zivkovic, L
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Abstract |
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A search is made for charged Higgs bosons predicted by Two-Higgs-Doublet extensions of the Standard Model (2HDM) using electron-positron collision data collected by the OPAL experiment at sqrts=189-209 GeV, corresponding to an integrated luminosity of approximately 600pb-1. Charged Higgs bosons are assumed to be pair-produced and to decay into qq, tnt or AWpm. No signal is observed. Model-independent limits on the charged Higgs-boson production cross section are derived by combining these results with previous searches at lower energies. Excluded areas on the [mHpm, BR(Hpm->TV)] plane are presented assuming BR(Hpm->tnt)+BR(Hpm->qq)=1. Under the above assumption, motivated by general 2HDM type II models, charged Higgs bosons are excluded up to a mass of 76.6GeV at 95% confidence level, independent of the branching ratio BR(Hpm->tnt). A scan of the 2HDM type I model parameter space is performed and limits on the Higgs-boson masses mHpm and mA are presented for different choices of tanb. |
Publication details |
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