Search for Heavy , Long-Lived Neutralinos that Decay to Photons at CDF II Using Photon Timing

  title={Search for Heavy , Long-Lived Neutralinos that Decay to Photons at CDF II Using Photon Timing},
  author={Timo. Aaltonen and Jahred Adelman and Takuma Akimoto and Michael G. Albrow and B. {\'A}lvarez Gonz{\'a}lez and Silvia Amerio and Dante Amidei and Anton Anastassov and Alberto Annovi and John Antos and Mari Aoki and Giorgio Apollinari and Artur. Apresyan and Tatsuya Arisawa and Akmal Artikov and W. Ashmanskas and Aline Attal and Adam Aurisano and Feroz Azfar and P. Azzi-Bacchetta and Paolo Azzurri and N. Bacchetta and William F. Badgett and Angela Barbaro-Galtieri and V. E. Barnes and Bruce A. Barnett and S. Baroiant and Valeria Bartsch and G{\"u}nther Bauer and P F Beauchemin and Franco Bedeschi and Peter. Bednar and Satyajit Behari and Giovanni Bellettini and Jane Bellinger and Alexandre Belloni and David Benjamin and A. Beretvas and Juerg Beringer and Tracey Berry and Ambreen Bhatti and Margaret Binkley and D. Bisello and I. Bizjak and Robert Blair and Craig Blocker and Barak Blumenfeld and Adriano Bocci and Arie Bodek and Val{\'e}rie Boisvert and Gino Bolla and Arkadiy Bolshov and Daniela Bortoletto and James Boudreau and Antonio Boveia and Benjamin Brau and Adam Bridgeman and L. Brigliadori and Carolina Ritter Bromberg and Erik Brubaker and J. A. Budagov and Howard S. Budd and Simon Budd and Kevin Burkett and Giuseppe Busetto and Peter Bussey and Alina Mihaela Buzatu and Karen L. Byrum and Susana Cabrera and Michele Campanelli and Maureen Campbell and Florencia Canelli and Alexandra Canepa and Duncan Carlsmith and Rodolfo Carosi and Simone Carrillo and St{\'e}phane Carron and Bruno Casal and M. Casarsa and Alberto Hidalgo Castro and Pierluigi Catastini and D. Cauz and M. Cavalli-Sforza and Andrea Cerri and Lucio Cerrito and Seo Hyoung Chang and Y. C. Chen and Maxwell Chertok and Giorgio Chiarelli and Guram Chlachidze and Frank Chlebana and Kiyoung Cho and D. Chokheli and John Paul Chou and Georgios Choudalakis and S. H. Chuang and K. Chung and W. H. Chung and Y. S. Chung and Catalin I. Ciobanu and M. A. Ciocci and A. G. Clark and David Clark and G. Compostella and Mary E. Convery and J. Kimmel K. S. Conway and Bridgette Cooper and K. Copic and M. Cordelli and Giorgio Cortiana and F. Crescioli and C. Cuenca Almenar and J Daniel Cuevas and Rob Culbertson and James Cully and David Dagenhart and M. Vyshnava Datta and Tesni Davies and P. de Barbaro and S. De Cecco and Amanda J Deisher and Gilles De Lentdecker and Gianluca De Lorenzo and M. Dell’Orso and Luc Demortier and Jinsong Deng and M. Deninno and D. De Pedis and Paul F. Derwent and Guglielmi Giovanni and Carla Dionisi and Barbara Ruzza and Jay R. Dittmann and M. D’Onofrio and Stefano Donati and P. Dong and J. Donini and Tommaso Dorigo and S. Dube and Jonathan Efron and Robert Erbacher and Deborah Errede and Steven M Errede and R. Eusebi and H. C. Fang and Stephanie Farrington and Wojtek Fedorko and R. G. Feild and Michael Feindt and J. -M. Pou Fernandez and C. Ferrazza and Robert Field and Gene Flanagan and Robyn E. Forrest and Steph Forrester and Melissa Franklin and James C Freeman and Ivan K. Furi{\'c} and Michele Gallinaro and J E Galyardt and Ford Garberson and J. E. Mu{\~n}oz Garcia and Amanda Garfinkel and Paul M Geffert and Krzysztof Genser and Heather K Gerberich and David W. Gerdes and Stefano Giagu and V. Giakoumopolou and Paola Giannetti and Kyle Gibson and J. L. Gimmell and C. M. Ginsburg and Nikos Giokaris and Maria Giordani and P. Giromini and Michele Giunta and V E Glagolev and Doug Glenzinski and Martin Gold and Nils Goldschmidt and A. Golossanov and Gilberto Guzm{\'a}n Valdivia G{\'o}mez and Guillelmo G{\'o}mez-Ceballos and Max Goncharov and Oscar Gonz{\'a}lez and I. A. Gorelov and Alfred T. Goshaw and Konstantin Goulianos and Amanda Dal Piva Gresele and S. Grinstein and Carla Grosso-Pilcher and U. Grundler and Jeferson B. da Costa and Z. Gunay-Unalan and C. Haber and K. Hahn and Steve R. Hahn and Eva Halkiadakis and Alexander Hamilton and B D Han and Joyce Ya-chi Han and Robert Handler and F. Happacher and Kazuhiko Hara and D H Hare and Matthew Hare and Sandra Harper and Randolph Harr and Robert M. Harris and Michael Hartz and Kenichi Hatakeyama and Jay F Hauser and Christopher Hays and Marcus Heck and Aart J. Heijboer and Bernhard Heinemann and Joel G. Heinrich and Christian Henderson and Marvin Herndon and J R Heuser and Samantha Hewamanage and D. Hidas and Christopher S. Hill and Dominic Hirschb{\"u}hl and Andy Hocker and Shuofei Hou and M. A. Houlden and S.-C. Hsu and B. Todd Huffman and Richard E. Hughes and Ulrich Husemann and Joey Huston and Joseph R. Incandela and Gian Luigi Introzzi and Marina Iori and Alexander Ivanov and B. Iyutin and E. James and Bodhitha Jayatilaka and Daniel Jeans and E. J. Jeon and Sergo Jindariani and Wendy R. Johnson and Mark Jones and K. K. Joo and Sangmi Jun and Ji Jung and Teruki Kamon and Deepak Kar and P. E. Karchin and Yoshinari Kato and Rebecca Kephart and Ulrich Kerzel and Vadim Khotilovich and Benjamin Kilminster and Doe Hyung Kim and Heung Sik Kim and Jihn E. Kim and Mun Ju Kim and S. B. Kim and S. H. Kim and Yejoon Kim and Naoki Kimura and Laurence Kirsch and Stanislav Klimenko and Markus Klute and Bruce Knuteson and Bumsuk Ko and Sue Ann Koay and Kunitaka Kondo and David Kong and Jacob 0 Konigsberg and Andrey Korytov and Ashutosh V. Kotwal and J. J. A. M. Kraus and Michal Kreps and Josiane Kroll and N. Krumnack and Morgan Kruse and Vyacheslav Krutelyov and Takayuki Kubo and S. E. Kuhlmann and Thomas. Kuhr and Nandkumar P. Kulkarni and Yasushi Kusakabe and Stan Kwang and A. T. Laasanen and Sandra Lai and S. Skali Lami and S. Lammel and Mark Lancaster and Roger Lander and Kevin Lannon and Amitabh Lath and Giuseppe Latino and Ignazio Lazzizzera and T. J. LeCompte and J. S. L. Lee and Y. J. Lee and R. Lef{\`e}vre and Nuno Leonardo and Stephanie S Leone and Stuart Levy and Jordan D. Lewis and C. S. Lin and Jacob Linacre and Monica Lindgren and Elliot Lipeles and Alison Lister and Dmitry Litvintsev and T Q Liu and N. S. Lockyer and Alexey Loginov and Michele Loreti and L{\'a}szl{\'o} Lovas and R.-S. Lu and Donatella Lucchesi and J. J. Lueck and Claudio Luci and P. J. Lujan and P. Lukens and Gina Lungu and L. Lyons and J. E. Lys and R. Lysak and Else Lytken and Peter Mack and David MacQueen and R. Madrak and Kaori Maeshima and Khaldoun Makhoul and Tuula Maki and Petar Maksimovic and Sachit Malde and Sarah A Malik and Giovanni Manca and Antonios Manousakis and Fabrizio Margaroli and Carmelo Marino and Concettina Marino and Aiden Martin and M. Martin and M. Mart́ınez and R. Mart́ınez-Ballaŕın and Takeo Maruyama and P. Mastrandrea and Tsugunosuke Masubuchi and Mark E Mattson and Paolo Mazzanti and Kevin S Mcfarland and Paula McIntyre and Andrew Mehta and P. Mehtala and A. Menzione and Petra Merkel and Christina Mesropian and Antonio Messina and Tianshun Miao and Nenad Miladinovic and Jeffrey Miles and R. Miller and Catherine Mills and M. Milnik and Abhas Mitra and Gena Mitselmakher and Hideaki Miyake and Shulamit Moed and N. Moggi and Carolyn Seungyoun Moon and R. Moore and Michelle Morello and Pedro A. Movilla Fern{\'a}ndez and Johannes M{\"u}lmenst{\"a}dt},
We present the results of the first hadron collider search for heavy, long-lived neutralinos that decay via e χ 0 1 → γ e G in gauge-mediated supersymmetry breaking models. Using an integrated lumi-nosity of 570±34 pb −1 of p¯ p collisions at √ s = 1.96 TeV, we select γ+jet+missing transverse energy candidate events based on the arrival time of a high-energy photon at the electromagnetic calorime-ter as measured with a timing system that was recently installed on the CDF II detector. We find 2… CONTINUE READING
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