Search for charged Higgs bosons in e(+)e(-) collisions at [Formula: see text]

在 e(+)e(-) 碰撞中寻找带电希格斯玻色子 [公式：见正文]

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作者：Abbiendi,G,Ainsley,C,Åkesson,P F,Alexander,G,Anagnostou,G,Anderson,K J,Asai,S,Axen,D,Bailey,I,Barberio,E,Barillari,T,Barlow,R J,Batley,R J,Bechtle,P,Behnke,T,Bell,K W,Bell,P J,Bella,G,Bellerive,A,Benelli,G,Bethke,S,Biebel,O,Boeriu,O,Bock,P,Boutemeur,M,Braibant,S,Brown,R M,Burckhart,H J,Campana,S,Capiluppi,P,Carnegie,R K,Carter,A A,Carter,J R,Chang,C Y,Charlton,D G,Ciocca,C,Csilling,A,Cuffiani,M,Dado,S,Dallavalle,M,De Roeck,A,De Wolf,E A,Desch,K,Dienes,B,Dubbert,J,Duchovni,E,Duckeck,G,Duerdoth,I P,Etzion,E,Fabbri,F,Ferrari,P,Fiedler,F,Fleck,I,Ford,M,Frey,A,Gagnon,P,Gary,J W,Geich-Gimbel,C,Giacomelli,G,Giacomelli,P,Giunta,M,Goldberg,J,Gross,E,Grunhaus,J,Gruwé,M,Gupta,A,Hajdu,C,Hamann,M,Hanson,G G,Harel,A,Hauschild,M,Hawkes,C M,Hawkings,R,Herten,G,Heuer,R D,Hill,J C,Hoffman,K,Horváth,D,Igo-Kemenes,P,Ishii,K,Jeremie,H,Jovanovic,P,Junk,T R,Kanzaki,J,Karlen,D,Kawagoe,K,Kawamoto,T,Keeler,R K,Kellogg,R G,Kennedy,B W,Kluth,S,Kobayashi,T,Kobel,M,Komamiya,S,Krämer,T,Krasznahorkay,A Jr,Krieger,P,von Krogh,J,Kuhl,T,Kupper,M,Lafferty,G D,Landsman,H,Lanske,D,Lellouch,D,Letts,J,Levinson,L,Lillich,J,Lloyd,S L,Loebinger,F K,Lu,J,Ludwig,A,Ludwig,J,Mader,W,Marcellini,S,Marchant,T E,Martin,A J,Mashimo,T,Mättig,P,McKenna,J,McPherson,R A,Meijers,F,Menges,W,Merritt,F S,Mes,H,Meyer,N,Michelini,A,Mihara,S,Mikenberg,G,Miller,D J,Mohr,W,Mori,T,Mutter,A,Nagai,K,Nakamura,I,Nanjo,H,Neal,H A,O'Neale,S W,Oh,A,Okpara,A,Oreglia,M J,Orito,S,Pahl,C,Pásztor,G,Pater,J R,Pilcher,J E,Pinfold,J,Plane,D E,Pooth,O,Przybycień,M,Quadt,A,Rabbertz,K,Rembser,C,Renkel,P,Roney,J M,Rossi,A M,Rozen,Y,Runge,K,Sachs,K,Saeki,T,Sarkisyan,E K G,Schaile,A D,Schaile,O,Scharff-Hansen,P,Schieck,J,Schörner-Sadenius,T,Schröder,M,Schumacher,M,Seuster,R,Shears,T G,Shen,B C,Sherwood,P,Skuja,A,Smith,A M,Sobie,R,Söldner-Rembold,S,Spano,F,Stahl,A,Strom,D,Ströhmer,R,Tarem,S,Tasevsky,M,Teuscher,R,Thomson,M A,Torrence,E,Toya,D,Trigger,I,Trócsányi,Z,Tsur,E,Turner-Watson,M F,Ueda,I,Ujvári,B,Vollmer,C F,Vannerem,P,Vértesi,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
期刊：European Physical Journal C影响因子：4.800
时间：2012起止号：2012;72(7):2076
doi：10.1140/epjc/s10052-012-2076-0

Abstract

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 [Formula: see text], corresponding to an integrated luminosity of approximately 600 pb(-1). Charged Higgs bosons are assumed to be pair-produced and to decay into [Formula: see text], τν(τ) or AW(±). 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. Under the assumption [Formula: see text], motivated by general 2HDM type II models, excluded areas on the [Formula: see text] plane are presented and charged Higgs bosons are excluded up to a mass of 76.3 GeV at 95 % confidence level, independent of the branching ratio BR(H(±)→τν(τ) ). A scan of the 2HDM type I model parameter space is performed and limits on the Higgs-boson masses [Formula: see text] and m(A) are presented for different choices of tanβ.

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