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Measurement of the top quark forward-backward production asymmetry and its dependence on event kinematic properties

Title
Measurement of the top quark forward-backward production asymmetry and its dependence on event kinematic properties
Authors
Aaltonen T.Amerio S.Amidei D.Anastassov A.Annovi A.Antos J.Apollinari G.Appel J.A.Arisawa T.Artikov A.Asaadi J.Ashmanskas W.Auerbach B.Aurisano A.Azfar F.Badgett W.Bae T.Barbaro-Galtieri A.Barnes V.E.Barnett B.A.Barria P.Bartos P.Bauce M.Bedeschi F.Behari S.Bellettini G.Bellinger J.Benjamin D.Beretvas A.Bhatti A.Bland K.R.Blumenfeld B.Bocci A.Bodek A.Bortoletto D.Boudreau J.Boveia A.Brigliadori L.Bromberg C.Brucken E.Budagov J.Budd H.S.Burkett K.Busetto G.Bussey P.Butti P.Buzatu A.Calamba A.Camarda S.Campanelli M.Canelli F.Carls B.Carlsmith D.Carosi R.Carrillo S.Casal B.Casarsa M.Castro A.Catastini P.Cauz D.Cavaliere V.Cavalli-Sforza M.Cerri A.Cerrito L.Chen Y.C.Chertok M.Chiarelli G.Chlachidze G.Cho K.Chokheli D.Ciocci M.A.Clark A.Clarke C.Convery M.E.Conway J.Corbo M.Cordelli M.Cox C.A.Cox D.J.Cremonesi M.Cruz D.Cuevas J.Culbertson R.D'Ascenzo N.Datta M.De Barbaro P.Demortier L.Deninno M.Devoto F.D'Errico M.Di Canto A.Di Ruzza B.Dittmann J.R.D'Onofrio M.Donati S.Dorigo M.Driutti A.Ebina K.Edgar R.Elagin A.Erbacher R.Errede S.Esham B.Eusebi R.Farrington S.Fernandez Ramos J.P.Field R.Flanagan G.Forrest R.Franklin M.Freeman J.C.Frisch H.Funakoshi Y.Garfinkel A.F.Garosi P.Gerberich H.Gerchtein E.Giagu S.Giakoumopoulou V.Gibson K.Ginsburg C.M.Giokaris N.Giromini P.Giurgiu G.Glagolev V.Glenzinski D.Gold M.Goldin D.Golossanov A.Gomez G.Gomez-Ceballos G.Goncharov M.Gonzalez Lopez O.Gorelov I.Goshaw A.T.Goulianos K.Gramellini E.Grinstein S.Grosso-Pilcher C.Group R.C.Guimaraes Da Costa J.Hahn S.R.Han J.Y.Happacher F.Hara K.Hare M.Harr R.F.Harrington-Taber T.Hatakeyama K.Hays C.Heinrich J.Herndon M.Hocker A.Hong Z.Hopkins W.Hou S.Hughes R.E.Husemann U.Hussein M.Huston J.Introzzi G.Iori M.Ivanov A.James E.Jang D.Jayatilaka B.Jeon E.J.Jindariani S.Jones M.Joo K.K.Jun S.Y.Junk T.R.Kambeitz M.Kamon T.Karchin P.E.Kasmi A.Kato Y.Ketchum W.Keung J.Kilminster B.Kim D.H.Kim H.S.Kim J.E.Kim M.J.Kim S.B.Kim S.H.Kim Y.K.Kim Y.J.Kimura N.Kirby M.Knoepfel K.Kondo K.Kong D.J.Konigsberg J.Kotwal A.V.Kreps M.Kroll J.Kruse M.Kuhr T.Kurata M.Laasanen A.T.Lammel S.Lancaster M.Lannon K.Latino G.Lee H.S.Lee J.S.Leo S.Leone S.Lewis J.D.Limosani A.Lipeles E.Liu H.Liu Q.Liu T.Lockwitz S.Loginov A.Lucchesi D.Lueck J.Lujan P.Lukens P.Lungu G.Lys J.Lysak R.Madrak R.Maestro P.Malik S.Manca G.Manousakis-Katsikakis A.Margaroli F.Marino P.Martinez M.Matera K.Mattson M.E.Mazzacane A.Mazzanti P.McNulty R.Mehta A.Mehtala P.Mesropian C.Miao T.Mietlicki D.Mitra A.Miyake H.Moed S.Moggi N.Moon C.S.Moore R.Morello M.J.Mukherjee A.Muller T.Murat P.Mussini M.Nachtman J.Nagai Y.Naganoma J.Nakano I.Napier A.Nett J.Neu C.Nigmanov T.Nodulman L.Noh S.Y.Norniella O.Oakes L.Oh S.H.Oh Y.D.Oksuzian I.Okusawa T.Orava R.Ortolan L.Pagliarone C.Palencia E.Palni P.Papadimitriou V.Parker W.Pauletta G.Paulini M.Paus C.Phillips T.J.Piacentino G.Pianori E.Pilot J.Pitts K.Plager C.Pondrom L.Poprocki S.Potamianos K.Prokoshin F.Pranko A.Ptohos F.Punzi G.Ranjan N.Redondo Fernandez I.Renton P.Rescigno M.Riddick T.Rimondi F.Ristori L.Robson A.Rodriguez T.Rolli S.Ronzani M.Roser R.Rosner J.L.Ruffini F.Ruiz A.Russ J.Rusu V.Safonov A.Sakumoto W.K.Sakurai Y.Santi L.Sato K.Saveliev V.Savoy-Navarro A.Schlabach P.Schmidt E.E.Schwarz T.Scodellaro L.Scuri F.Seidel S.Seiya Y.Semenov A.Sforza F.Shalhout S.Z.Shears T.Shepard P.F.Shimojima M.Shochet M.Shreyber-Tecker I.Simonenko A.Sinervo P.Sliwa K.Smith J.R.Snider F.D.Sorin V.Song H.Stancari M.St. Denis R.Stelzer B.Stelzer-Chilton O.Stentz D.Strologas J.Sudo Y.Sukhanov A.Suslov I.Takemasa K.Takeuchi Y.Tang J.Tecchio M.Teng P.K.Thom J.Thomson E.Thukral V.Toback D.Tokar S.Tollefson K.Tomura T.Tonelli D.Torre S.Torretta D.Totaro P.Trovato M.Ukegawa F.Uozumi S.Vazquez F.Velev G.Vellidis C.Vernieri C.Vidal M.Vilar R.Vizan J.Vogel M.Volpi G.Wagner P.Wallny R.Wang S.M.Warburton A.Waters D.Wester W.C.Whiteson D.Wicklund A.B.Wilbur S.Williams H.H.Wilson J.S.Wilson P.Winer B.L.Wittich P.Wolbers S.Wolfe H.Wright T.Wu X.Wu Z.Yamamoto K.Yamato D.Yang T.Yang U.K.Yang Y.C.Yao W.-M.Yeh G.P.Yi K.Yoh J.Yorita K.Yoshida T.Yu G.B.Yu I.Zanetti A.M.Zeng Y.Zhou C.Zucchelli S.
Ewha Authors
이현수
SCOPUS Author ID
이현수scopusscopus
Issue Date
2013
Journal Title
Physical Review D - Particles, Fields, Gravitation and Cosmology
ISSN
1550-7998JCR Link
Citation
vol. 87, no. 9
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
We present new measurements of the inclusive forward-backward tt̄ production asymmetry, AFB, and its dependence on several properties of the tt̄ system. The measurements are performed with the full Tevatron data set recorded with the CDF II detector during pp̄ collisions at √s=1.96 TeV, corresponding to an integrated luminosity of 9.4 fb -1. We measure the asymmetry using the rapidity difference Δy=yt-yt̄. Parton-level results are derived, yielding an inclusive asymmetry of 0.164±0.047(stat+syst). We establish an approximately linear dependence of AFB on the top-quark pair mass Mtt̄ and the rapidity difference

Δy

at detector and parton levels. Assuming the standard model, the probabilities to observe the measured values or larger for the detector-level dependencies are 7.4×10-3 and 2.2×10-3 for Mtt̄ and

respectively. Lastly, we study the dependence of the asymmetry on the transverse momentum of the tt̄ system at the detector level. These results are consistent with previous lower-precision measurements and provide additional quantification of the functional dependencies of the asymmetry. © 2013 American Physical Society.
DOI
10.1103/PhysRevD.87.092002
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자연과학대학 > 물리학전공 > Journal papers
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