학술논문

First measurement of the forward-backward asymmetry in bottom-quark pair production at high mass
Document Type
Working Paper
Author
CDF CollaborationAaltonen, 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.Cerri, A.Cerrito, L.Chen, Y. C.Chertok, M.Chiarelli, G.Chlachidze, G.Cho, K.Chokheli, D.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.Marchese, 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.Farrington, S.Ramos, J. P. FernándezField, R.Flanagan, G.Forrest, R.Franklin, M.Freeman, J. C.Frisch, H.Funakoshi, Y.Galloni, C.Garfinkel, A. F.Garosi, P.Gerberich, H.Gerchtein, E.Giagu, S.Giakoumopoulou, V.Gibson, K.Ginsburg, C. M.Giokaris, N.Giromini, P.Glagolev, V.Glenzinski, D.Gold, M.Goldin, D.Golossanov, A.Gomez, G.Gomez-Ceballos, G.Goncharov, M.López, O. GonzálezGorelov, I.Goshaw, A. T.Goulianos, K.Gramellini, E.Grosso-Pilcher, C.Group, R. C.da Costa, J. GuimaraesHahn, 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.Lister, A.Liu, H.Liu, Q.Liu, T.Lockwitz, S.Loginov, A.Lucà, 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.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, Th.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.Fernández, I. RedondoRenton, P.Rescigno, M.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.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.Sliwa, K.Smith, J. R.Snider, F. D.Sorin, V.Song, H.Stancari, M.Denis, R. St.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.Vázquez, F.Velev, G.Vellidis, C.Vernieri, C.Vidal, M.Vilar, R.Vizán, J.Vogel, M.Volpi, G.Wagner, P.Wallny, R.Wang, S. M.Waters, D.Wester III, 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.
Source
Phys. Rev. D 92, 032006 (2015)
Subject
High Energy Physics - Experiment
Language
Abstract
We measure the particle-level forward-backward production asymmetry in $b\bar{b}$ pairs with masses $m(b\bar{b})$ larger than 150 GeV/$c^2$, using events with hadronic jets and employing jet charge to distinguish $b$ from $\bar{b}$. The measurement uses 9.5/fb of ppbar collisions at a center of mass energy of 1.96 TeV recorded by the CDF II detector. The asymmetry as a function of $m(b\bar{b})$ is consistent with zero, as well as with the predictions of the standard model. The measurement disfavors a simple model including an axigluon with a mass of 200 GeV/$c^2$ whereas a model containing a heavier 345 GeV/$c^2$ axigluon is not excluded.
Comment: 11 pages, for submission to Physical Review D