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, d'Errico M, Devoto F, 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, Fernández 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, González López 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 J, Kim Y K, 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, Martínez 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 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, Pranko A, Prokoshin F, Ptohos F, Punzi G, Ranjan N, Redondo Fernández I, Renton 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, Sinervo P, Sliwa K, Smith J R, Snider F D, Song H, Sorin V, 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, 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, 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
Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00014, Helsinki, Finland.
Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy.
Phys Rev Lett. 2013 May 17;110(20):201802. doi: 10.1103/PhysRevLett.110.201802. Epub 2013 May 16.
We present a search for chargino-neutralino associated production using like electric charge dilepton events collected by the CDF II detector at the Fermilab Tevatron in proton-antiproton collisions at sqrt[s] = 1.96 TeV. One lepton is identified as the hadronic decay of a tau lepton, while the other is an electron or muon. In data corresponding to 6.0 fb(-1) of integrated luminosity, we obtain good agreement with standard model predictions and set limits on the chargino-neutralino production cross section for simplified gravity- and gauge-mediated models. As an example, assuming that the chargino and neutralino decays to taus dominate, in the simplified gauge-mediated model we exclude cross sections greater than 300 fb at 95% credibility level for chargino and neutralino masses of 225 GeV/c(2). This analysis is the first to extend the LHC searches for electroweak supersymmetric production of gauginos to high tanβ and slepton next-to-lightest supersymmetric particle scenarios.
我们利用费米实验室Tevatron的CDF II探测器在质心能量(\sqrt{s}=1.96) TeV的质子-反质子碰撞中收集的同电荷双轻子事件，开展了 chargino-中性子伴随产生的搜寻。一个轻子被识别为陶轻子的强子衰变，而另一个是电子或渺子。在对应于6.0 fb(^{-1})积分亮度的数据中，我们得到了与标准模型预测的良好一致性，并对简化的引力介导和规范介导模型的chargino-中性子产生截面设置了限制。例如，假设chargino和中性子衰变为陶轻子占主导，在简化的规范介导模型中，对于质量为225 GeV/c(^{2})的chargino和中性子，我们在95%置信水平下排除了大于300 fb的截面。该分析首次将大型强子对撞机对电弱超对称产生的超对称规范玻色子的搜寻扩展到高(\tan\beta)和次最轻超对称粒子为 sleptons 的情形。
