Measurement of the forward-backward asymmetry of top-quark and antiquark pairs using the full CDF Run II data set

Επιστημονική δημοσίευση - Άρθρο Περιοδικού uoadl:3170368 35 Αναγνώσεις

Μονάδα:
Ερευνητικό υλικό ΕΚΠΑ
Τίτλος:
Measurement of the forward-backward asymmetry of top-quark and antiquark
pairs using the full CDF Run II data set
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
We measure the forward-backward asymmetry of the production of top-quark
and antiquark pairs in proton-antiproton collisions at center-of-mass
energy root s = 1.96 TeV using the full data set collected by the
Collider Detector at Fermilab (CDF) in Tevatron Run II corresponding to
an integrated luminosity of 9.1 fb(-1). The asymmetry is characterized
by the rapidity difference between top quarks and antiquarks (Delta y)
and measured in the final state with two charged leptons (electrons and
muons). The inclusive asymmetry, corrected to the entire phase space at
parton level, is measured to be A(FB)(t (t) over bar) = 0.12 +/- 0.13,
consistent with the expectations from the standard model (SM) and
previous CDF results in the final state with a single charged lepton.
The combination of the CDF measurements of the inclusive A(FB)(t (t)
over bar) in both final states yields A(FB)(t (t) over bar) 0.160 +/-
0.045, which is consistent with the SM predictions. We also measure the
differential asymmetry as a function of Delta y. A linear fit to A(FB)(t
(t) over bar) (vertical bar Delta y vertical bar),assuming zero
asymmetry at Delta y = 0, yields a slope of alpha = 0.14 +/- 0.15,
consistent with the SM prediction and the previous CDF determination in
the final state with a single charged lepton. The combined slope of
A(FB)(t (t) over bar) (vertical bar Delta y vertical bar) the two final
states is alpha = 0.227 +/- 0.057, which is 2.0 sigma larger than the SM
prediction.
Έτος δημοσίευσης:
2016
Συγγραφείς:
Aaltonen, T.
Amerio, S.
Amidei, D.
Anastassov, A. and
Annovi, A.
Antos, J.
Apollinari, G.
Appel, J. A. and
Arisawa, T.
Artikov, A.
Asaadi, J.
Ashmanskas, W. and
Auerbach, B.
Aurisano, A.
Azfar, F.
Badgett, W.
Bae, T.
and Barbaro-Galtieri, A.
Barnes, V. E.
Barnett, B. A. and
Barria, P.
Bartos, P.
Bauce, M.
Bedeschi, F.
Behari, S.
and Bellettini, G.
Bellinger, J.
Benjamin, D.
Beretvas, A.
and Bhatti, A.
Bland, K. R.
Blumenfeld, B.
Bocci, A. and
Bodek, A.
Bortoletto, D.
Boudreau, J.
Boveia, A. and
Brigliadori, L.
Bromberg, C.
Brucken, E.
Budagov, J. and
Budd, H. S.
Burkett, K.
Busetto, G.
Bussey, P.
Butti, P.
and Buzatu, A.
Calamba, A.
Camarda, S.
Campanelli, M. and
Canelli, F.
Carls, B.
Carlsmith, D.
Carosi, R.
Carrillo,
S.
Casal, B.
Casarsa, M.
Castro, A.
Catastini, P. and
Cauz, D.
Cavaliere, V.
Cerri, A.
Cerrito, L.
Chen, Y. C.
and Chertok, M.
Chiarelli, G.
Chlachidze, G.
Cho, K. and
Chokheli, D.
Clark, A.
Clarke, C.
Convery, M. E.
Conway,
J.
Corbo, M.
Cordelli, M.
Cox, C. A.
Cox, D. J. and
Cremonesi, M.
Cruz, D.
Cuevas, J.
Culbertson, R. and
d'Ascenzo, N.
Datta, M.
de Barbaro, P.
Demortier, L. and
Deninno, M.
D'Errico, M.
Devoto, F.
Di Canto, A.
Di
Ruzza, B.
Dittmann, J. R.
Donati, S.
D'Onofrio, M. and
Dorigo, M.
Driutti, A.
Ebina, K.
Edgar, R.
Erbacher, R.
and Errede, S.
Esham, B.
Farrington, S.
Fernandez Ramos, J.
P.
Field, R.
Flanagan, G.
Forrest, R.
Franklin, M. and
Freeman, J. C.
Frisch, H.
Funakoshi, Y.
Galloni, C. and
Garfinkel, A. F.
Garosi, P.
Gerberich, H.
Gerchtein, E. and
Giagu, S.
Giakoumopoulou, V.
Gibson, K.
Ginsburg, C. M. and
Giokaris, N.
Giromini, P.
Glagolev, V.
Glenzinski, D. and
Gold, M.
Goldin, D.
Golossanov, A.
Gomez, G. and
Gomez-Ceballos, G.
Goncharov, M.
Gonzalez Lopez, O.
Gorelov,
I.
Goshaw, A. T.
Goulianos, K.
Gramellini, E. and
Grosso-Pilcher, C.
da Costa, J. Guimaraes
Hahn, S. R.
Han,
J. Y.
Happacher, F.
Hara, K.
Hare, M.
Harr, R. F. and
Harrington-Taber, T.
Hatakeyama, K.
Hays, C.
Heinrich, J.
and Herndon, M.
Hocker, A.
Hong, Z.
Hopkins, W.
Hou, S.
and Hughes, R. E.
Husemann, U.
Hussein, M.
Huston, J. and
Introzzi, G.
Iori, M.
Ivanov, A.
James, E.
Jang, D. and
Jayatilaka, B.
Jeon, E. J.
Jindariani, S.
Jones, M.
Joo,
K. K.
Jun, S. Y.
Junk, T. R.
Kambeitz, M.
Kamon, T. and
Karchin, P. E.
Kasmi, A.
Kato, Y.
Ketchum, W.
Keung, J.
and Kilminster, B.
Kim, D. H.
Kim, H. S.
Kim, J. E.
Kim,
M. J.
Kim, S. H.
Kim, S. B.
Kim, Y. J.
Kim, Y. K. and
Kimura, N.
Kirby, M.
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.
and Lannon, K.
Latino, G.
Lee, H. S.
Lee, J. S.
Leo, S.
and Leone, S.
Lewis, J. D.
Limosani, A.
Lipeles, E. and
Lister, A.
Liu, Q.
Liu, T.
Lockwitz, S.
Loginov, A. and
Lucchesi, D.
Luca, A.
Lueck, J.
Lujan, P.
Lukens, P. and
Lungu, G.
Lys, J.
Lysak, R.
Madrak, R.
Maestro, P. and
Malik, S.
Manca, G.
Manousakis-Katsikakis, A.
Marchese, L.
and Margaroli, F.
Marino, P.
Matera, K.
Mattson, M. E. and
Mazzacane, A.
Mazzanti, P.
McNulty, R.
Mehta, A. and
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, Th.
Murat, P.
and Mussini, M.
Nachtman, J.
Nagai, Y.
Naganoma, J. and
Nakano, I.
Napier, A.
Nett, J.
Nigmanov, T.
Nodulman, L.
and Noh, S. Y.
Norniella, O.
Oakes, L.
Oh, S. H.
Oh, Y.
D.
Okusawa, T.
Orava, R.
Ortolan, L.
Pagliarone, C. and
Palencia, E.
Palni, P.
Papadimitriou, V.
Parker, W. and
Pauletta, G.
Paulini, M.
Paus, C.
Phillips, T. J. and
Piacentino, G.
Pianori, E.
Pilot, J.
Pitts, K.
Plager,
C.
Pondrom, L.
Poprocki, S.
Potamianos, K.
Pranko, A.
and Prokoshin, F.
Ptohos, F.
Punzi, G.
Redondo Fernandez, I.
and Renton, P.
Rescigno, M.
Rimondi, F.
Ristori, L. and
Robson, A.
Rodriguez, T.
Rolli, S.
Ronzani, M.
Roser, R.
and Rosner, J. L.
Ruffini, F.
Ruiz, A.
Russ, J.
Rusu, V.
and Sakumoto, W. K.
Sakurai, Y.
Santi, L.
Sato, K. and
Saveliev, V.
Savoy-Navarro, A.
Schlabach, P.
Schmidt, E. E.
and Schwarz, T.
Scodellaro, L.
Scuri, F.
Seidel, S. and
Seiya, Y.
Semenov, A.
Sforza, F.
Shalhout, S. Z.
Shears,
T.
Shepard, P. F.
Shimojima, M.
Shochet, M. and
Shreyber-Tecker, I.
Simonenko, A.
Sliwa, K.
Smith, J. R. and
Snider, F. D.
Song, H.
Sorin, V.
St Denis, R.
Stancari,
M.
Stentz, D.
Strologas, J.
Sudo, Y.
Sukhanov, A. and
Suslov, I.
Takemasa, K.
Takeuchi, Y.
Tang, J.
Tecchio,
M.
Teng, P. K.
Thom, J.
Thomson, E.
Thukral, V. and
Toback, D.
Tokar, S.
Tollefson, K.
Tomura, T.
Tonelli,
D.
Torre, S.
Torretta, D.
Totaro, P.
Trovato, M. and
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. and
Waters, D.
Wester, III, W. C.
Whiteson, D.
Wicklund, A. B.
and Wilbur, S.
Williams, H. H.
Wilson, J. S.
Wilson, P. and
Winer, B. L.
Wittich, P.
Wolbers, S.
Wolfe, H.
Wright,
T.
Wu, X.
Wu, Z.
Yamamoto, K.
Yamato, D.
Yang, T.
and 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.
and Zanetti, A. M.
Zeng, Y.
Zhou, C.
Zucchelli, S.
CDF
Collaboration
Περιοδικό:
Physical Review D
Εκδότης:
AMER PHYSICAL SOC
Τόμος:
93
Αριθμός / τεύχος:
11
Επίσημο URL (Εκδότης):
DOI:
10.1103/PhysRevD.93.112005
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