Search for a Higgs boson in the diphoton final state using the full CDF data set from [formula omitted] collisions at [formula omitted

T Aaltonen,J Yoh,J Budagov,Y Zeng,A Bodek,S Rolli,A Semenov,R Mcnulty,R Madrak,J Asaadi,G Piacentino,N Ershaidat,H Wolfe,R Vilar,D Stentz,F Ruffini,E Thomson,J Thome,G Flanagan,F Vázquez,T Riddick,A Bhatti,D Torretta,Y Funakoshi,J Morlock,F Rimondi,S Donati,A Eppig,W Badgett,J Naganoma,Y Seiya,B Álvarez González,S Leo,I Oksuzian,L Nodulman,T Kuhr,M Tecchio,A Manousakis-Katsikakis,T Miao,Y Kato,A Hamaguchi,D Dagenhart,G Manca,B Di Ruzza,D Waters,P Sinervo,C Bromberg,T Tomura,O Norniella,C Plager,P Murat,M Lindgren,D Tonelli,E Wicklund,Y Sudo,M Rescigno,M Corbo,L Pondrom,A Ruiz,L Ortolan,A Elagin,S Pagan Griso,D Yamato,D Krop,A Varganov,M Kurata,R Roser,M Hurwitz,D Toback,V Papadimitriou,R Orava,A Mazzacane,S Uozumi,A Scribano,S Torre,J Vizán,D Glenzinski,A Aurisano,G Compostella,T Okusawa,P De Barbaro,J Nett,K Matera,W Ketchum,H Gerberich,R Culbertson,Y Takeuchi,N Ranjan,L Demortier,R Forrest,I Shreyber-Tecker,S Lockwitz,S Behari,G Giurgiu,M Cordelli,G Chlachidze,K Tollefson,F Wick,J Lys,J Huston,P Giromini,C Mesropian,E Palencia,A Rahaman,T Yang,D Lucchesi,P Lukens,E Lee,S Amerio,E James,S Kwang,P Wilson,H Miyake,K Gibson,T Bae,D Amidei,A Napier,K Kondo,M Gold,F Ptohos,F Happacher,J Conway,M Heck,G Lungu,P Mazzanti,D Chokheli,G Volpi,K Takemasa,N Moggi,A Loginov,F Devoto,M Hussein,A Golossanov,V Rusu,O González,A Di Canto,M Stancari,J Keung,S Klimenko,C Grosso-Pilcher,M Franklin,C Vellidis,S Lami,B Carls,M Datta,A Mukherjee,T Wakisaka,D Mietlicki,P Movilla Fernandez,R St Denis,C Pagliarone,I Bizjak,P Squillacioti,P Totaro,S Carron,Y Sakurai,K Goulianos,S Zucchelli,K Sliwa,J Boudreau,P Catastini,K Potamianos,V Ramakrishnan,A Mitra,D Goldin,M Lancaster,M Vidal,M Campbell,A Artikov,D Cauz,G Velev,F Canelli,A Boveia,G Punzi,C Calancha,N Hussain,A Pranko,M Hare,S Errede,M Shimojima,L Santi,G Busetto,G Introzzi,W Ashmanskas,S Wolbers,K Ebina,G Pauletta,J Patrick,M Jones,V Khotilovich,S Carrillo,N Giokaris,N Goldschmidt,T Rodriguez,L Brigliadori,C Neu,M Feindt,P Garosi,P Schlabach,T Wright,V Saveliev,S Poprocki,Q Liu,E Gerchtein,A Anastassov,F Azfar,J Thom,L Scodellaro,J Kroll,I Nakano,S Jindariani,S Malik,G A Thompson ,M Kreps,D Bisello,C Marino,X Wu,D W Jang ,M Trovato,M Chertok,W C Wester ,A Paramonov ,R Carosi,I Redondo,I Vila,J Königsberg ,U K Yang ,D O Litvintsev ,K R Bland ,T Arisawa,A Kotwal ,T Lecompte,M J Morello ,Th Müller ,R Moore,A T Goshaw ,J Russ,P Dong,A Lath,V Cavaliere,M Kirby,A Soha,S Giagu,A Bocci,B Stelzer,A Ivanov,F Margaroli,R Wallny,P Wagner,S Tokár ,J C Yun ,B Blumenfeld,M Cavalli‐Sforza ,T Kamon,R Eusebi,T Shears,K Burkett,Y.K Kim,M Goncharov,E J Jeon ,K Yorita,J.E Kim,P Renton,D.H Kim,K Cho,M Gallinaro,S M Farrington ,P Mcintyre,G Bellettini,S C Seidel ,J Freeman ,R Erbacher,P Barria,M E Convery ,B A Barnett ,S.H Kim,T J Phillips ,C S Moon ,F Chlebana,S.W Lee,J Dittmann ,J R Smith ,T Dorigo,D Benjamin,Y Yang ,S Leone,P Mastrandrea,I Yu,M Bauce,V Giakoumopoulou,M Dell’orso ,A T Laasanen ,M.J Kim,A Robson,H.S Kim,J D Lewis ,R L Wagner ,A Clark,F Prokoshin,I Gorelov,B Kilminster,K Lannon,T R Junk ,A Barbaro‐Galtieri ,A Beretvas,D Whiteson,G Latino,J Nielsen,J.S Lee,G B Yu ,Y D Oh ,M D’errico ,D Bortoletto,K Hara,M Casarsa,P Bussey,J Pilot,C M Ginsburg ,S Lammel,S Wilbur,A Savoy-Navarro,F D Snider ,P Mehtälä ,T Liu,J E Garcia ,K Hatakeyama,A Safonov,C Zhou,B L Winer ,P Lujan,J Cuevas,E Pianori,R Hughes ,M Herndon,V Krutelyov,J Guimarães Da Costa ,K Yamamoto,F Bedeschi,C Paus,A Limosani,E E Schmidt ,А Суханов ,Y.J Kim,M Mussini,S.M Wang,K Pitts,M N Mondragón ,G Gómez ,A Annovi,K Yi,D J Cox ,H H Williams ,S Camarda,A Zanetti,W K Sakumoto ,A Castro,R Lysák ,P F Shepard ,R D Field ,J P Fernández ,J A Appel ,A Calamba,K Maeshima,D Hare,A Höcker ,V Glagolev,W H Chung ,J Tang,Y.C Chen,J Heinrich,K J Knoepfel ,M Kruse,S Moêd ,J Lueck,L Ristori,F Sforza,K Sato,S R Hahn ,J Antos̆ ,S H Oh ,M Dorigo,G Apollinari,A F Garfinkel ,J Strologas,A Warburton,T Rodrigo,A Lister,B Casal,H S Budd ,Thomas Schwarz ,David Horn ,C Clarke,C P Hays ,J S Wilson ,F Scuri,H Liu,L Cerrito,M Vogel,Y Nagai,C A Cox ,U Husemann,M E Mattson ,M J Shochet ,A Mehta,J Han ,M Deninno,S Shalhout ,N Kimura,I K Furic ,P Giannetti,M Paulini,H.S Lee,G Chiarelli,W H Hopkins ,C J Lin ,A Kasmi,R Lander ,G L Strycker ,S Hou,S Grinstein,L Oakes,А Симоненко ,F Ukegawa,S S Yu ,M D’onofrio ,N D’ascenzo ,W-M Yao ,A Cerri,M Iori,P E Karchin ,A Schmidt,F Crescioli,И Суслов ,T Yoshida,D Pellett ,A B Wicklund ,M Campanelli,A Buzatu,M J Frank ,P Wittich,D J Kong ,Y S Chung ,E Lipeles,M A Ciocci ,P Maestro,R Harr ,P Bartoš ,B Jayatilaka,S.B Kim,S Y Jun ,G Gómez-Ceballos ,B Auerbach,E Halkiadakis,P K Teng ,E Rogers,S Y Noh ,V E Barnes ,S Hewamanage,O Stelzer-Chilton,M S Neubauer ,G P Yeh ,E Brücken ,M Martínez,V Sorı́n ,Z Wu,H Song,J Nachtman,J Bellinger,C Liu,A Penzo,K K Joo ,K S Mcfarland ,D Carlsmith

doi:10.1016/j.physletb.2012.08.051

Abstract

A search for a narrow Higgs boson resonance in the diphoton mass spectrum is presented based on data corresponding to 10 fb−1 of integrated luminosity collected by the CDF experiment from proton–antiproton collisions at s=1.96 TeV. To increase the sensitivity of the search, we employ a multivariate discriminant technique for the first time in this channel at CDF. No evidence of signal is observed, and upper limits are set on the cross section times branching ratio of the resonant state as a function of the Higgs boson mass. The limits are interpreted in the context of the standard model with an expected (observed) limit on the cross section times branching ratio of 9.9 (17.0) times the standard model prediction at the 95% credibility level for a Higgs boson mass of 125 GeV/c2. Moreover, a Higgs boson with suppressed couplings to fermions is excluded for masses below 114 GeV/c2 at the 95% credibility level.

Highlights

The standard model (SM) of particle physics has proven to be a robust theory that accurately describes the properties of elementary particles and the forces of interaction between them
In this Letter, we present a search for a Higgs boson decaying to two photons using the final Collider Detector at Fermilab (CDF) diphoton data set, corresponding to an integrated luminosity of 10 fb−1
They are 4% or less for the channels associated with the SM diphoton resonance search and are less than 7% for the CC0 and CCJ categories used in the multivariate technique

Summary

Introduction

The standard model (SM) of particle physics has proven to be a robust theory that accurately describes the properties of elementary particles and the forces of interaction between them. Visitor from Northwestern University, Evanston, IL 60208, USA. Visitor from University of Notre Dame, Notre Dame, IN 46556, USA. Visitor from Texas Tech University, Lubbock, TX 79609, USA. In this Letter, we present a search for a Higgs boson decaying to two photons using the final CDF diphoton data set, corresponding to an integrated luminosity of 10 fb−1. This analysis searches the diphoton mass distribution for a narrow resonance that could reveal the presence of a SM or fermiophobic Higgs boson, updating the previous CDF result [9] with more than 40% additional integrated luminosity. We implement a new multivariate technique for events that contain two central photons, using both diphoton and jet kinematic variables to improve the sensitivity for identifying a Higgs boson signal from the diphoton backgrounds

Higgs boson signal model

Detector and event selection

Diphoton resonance search

Multivariate discriminator

Systematic uncertainties

Summary and conclusions