Search for a Low-Mass Neutral Higgs Boson with Suppressed Couplings to Fermions Using Events with Multiphoton Final States

T Aaltonen,S Amerio, D Amidei, A Anastassov, A Annovi, J Antos, G Apollinari,J A Appel,T Arisawa,A Artikov,J Asaadi,W Ashmanskas,B Auerbach,A Aurisano, F Azfar,W Badgett, T Bae, A Barbarogaltieri,V E Barnes,B A Barnett,P Barria,P Bartos,M Bauce,F Bedeschi, S Behari, G Bellettini,J Bellinger,D Benjamin, A Beretvas,A Bhatti,K R Bland,B Blumenfeld, A Bocci,A Bodek,D Bortoletto,J Boudreau, A Boveia, L Brigliadori,C Bromberg,E Brucken,J Budagov,H S Budd, K Burkett,G Busetto, P Bussey,P Butti,A Buzatu,A Calamba,S Camarda,M Campanelli,F Canelli,B Carls, D Carlsmith,R Carosi,S Carrillo,B Casal,M Casarsa,A Castro, P Catastini, D Cauz,V Cavaliere,A Cerri, L Cerrito,Y C Chen, M Chertok,G Chiarelli,G Chlachidze,Kyoungik Cho,D Chokheli,A Clark,C Clarke,M E Convery,J Conway,M Corbo,M Cordelli, C A Cox,D J Cox,M Cremonesi,D Cruz, J Cuevas,R Culbertson,N Dascenzo,M Datta,P De Barbaro,L Demortier, L Marchese, M Deninno,F Devoto, M Derrico,A Di Canto,B Di Ruzza,J R Dittmann,M Donofrio,S Donati,M Dorigo, A Driutti,K Ebina, Ryan Christopher Edgar,R Erbacher

PHYSICAL REVIEW D（2016）

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摘要

A search for a Higgs boson with suppressed couplings to fermions, h(f), assumed to be the neutral, lower-mass partner of the Higgs boson discovered at the Large Hadron Collider, is reported. Such a Higgs boson could exist in extensions of the standard model with two Higgs doublets, and could be produced via p (p) over bar -> H(+/-)h(f) -> W*h(f)h(f) -> 4 gamma + X where H (+/-) is a charged Higgs boson. This analysis uses all events withat least three photons in the final state from proton-antiproton collisions at a center-of-mass energy of 1.96 TeV collected by the Collider Detector at Fermilab, corresponding to an integrated luminosity of 9.2 fb(-1). No evidence of a signal is observed in the data. Values of Higgs-boson masses between 10 and 100 GeV/c(2) are excluded at 95% Bayesian credibility.

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关键词

neutral higgs boson,fermions,multiphoton,couplings,low-mass

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