Search for massive, long-lived particles using multitrack displaced vertices or displaced lepton pairs in pp collisions at √s = 8 TeV with the ATLAS detector

  title={Search for massive, long-lived particles using multitrack displaced vertices or displaced lepton pairs in pp collisions at √s = 8 TeV with the ATLAS detector},
  author={Elin Kuutmann Berge{\aa}s and Torsten Paul Ake {\AA}kesson and Patrick Davison and Stephen Webb and Stephen Jacob Sekula and J. Huston and Chris Hoffmann and Andrei Akimov and Syed Haider Abidi and Ryota Yakabe and M. F. Isacson and S. Zimmermann and Jaroslava Schovancova and Bobby Samir Acharya and B. S. Acharya and Steve White and Martin Shapiro and Susanna Zimmermann and Michael Adersberger and Jfp Schouwenberg and Lukasz Zwalinski and Sebastian Pedraza Lopez and Julia Mariana Iturbe Ponce and Filippo Maria Giorgi and Scott Robertson and Fernando Monticelli and T. P. A. {\AA}kesson and Gian Luigi Alberghi and M. J. Alconada Verzini and S. C. Alderweireldt and Mario Mart{\'i}nez and Yury Tikhonov and Theodoros Alexopoulos and Henric George Wilkens and David J. Miller and Steven Patrick Alkire and Santiago Juan Batista and Benjamin William Allen and William Axel Leight and Cristiano Alpigiani and J. G. Contreras and Aleksey A. Nikiforov and S. T. French and Ph. Leruste and Andrew David Altheimer and Daniela Bortoletto and Christopher Thomas Potter and Azzah Aziz Alshehri and M. I. Alstaty and B. Alvarez Gonzalez and Cherifa Sabrina Amrouche and Lucian Stefan Ancu and Christoph Falk Anders and John Kenneth Anders and Hovhannes Khandanyan and Maria Josefina Alconada Verzini and Christos Anastopoulos and V. Castillo Gimenez and V. Andrei and Eric Thomson and Antonio Valero and Florian M{\"u}ller and Matthew Thomas Anthony and Kiyotomo Kawagoe and Stylianos Angelidakis and Valentin Andrei and Ludovica Aperio Bella and Pavol Strizenec and Christopher Michael Lester and Kelby Anderson and Jos{\'e} Enrique Garc{\'i}a Navarro and Elena Garc{\'i}a and Spyridon Argyropoulos and Francis Anghinolfi and William Lockman and Francisco Anuar Arduh and Boris Anatolievich Dolgoshein and Aaron James Armbruster and Lewis James Armitage and Alexander Armstrong and Rose Elisabeth Ardell and Cristina Mart{\'i}n P{\'e}rez and Wolfgang Ehrenfeld and Alexander Morton and Rachel Reisner Hinman and Alexey Boldyrev and John Stark and Andrei Artamonov and Eleni Myrto Asimakopoulou and Makhail Kazarinov and Domenico Scannicchio and Markus Atkinson and Alexei Klimentov and Simone Pagan Griso and Bojana Risti{\'c} and Todd Brian Huffman and Matthew Scott Rudolph and Peter Lundgaard Rosendahl and Keith A. Roscoe and Rachel Maria Avramidou and Giacomo Artoni and Stefan Gadatsch and Mohamad Kassem Ayoub and Deshan Kavishka Abhayasinghe and Hamed Bakhshiansohi and Ruslan Asfandiyarov and Roberta Santacesaria and Laura Pacheco Rodriguez and Suguru Hasegawa and P. Nevski and Arthur James Horton and Massimiliano Bellomo and Alain Bellerive and Christos Bakalis and Oliver Keith Baker and William Keaton Balunas and Pepijn Johannes Bakker and Sw. Banerjee and Arwa A E Bannoura and Xueyao Zhang and Manuel Vogel and John Butler and Seema Bahinipati and Elisabetta Luigia Barberio and Anjishnu Bandyopadhyay and Els Koffeman and Michael David Beattie and Sebastian Andres Olivares Pino and Gregory David Hallewell and Jason Tylor Colt Barkeloo and Joshua Wyatt Smith and Sarah Louise Barnes and Fernando Barreiro and Michele Faucci Giannelli and Maksym Deliyergiyev and Elisabeth Petit and Walter Hopkins and Silje Raddum and Hans Heinrich Braun and Matteo Mantoani and Andrea Michelle Bangert and D. Pose and Claudia Bertella and Zoltan Laszlo Trocsanyi and James Baker Beacham and Eric Drechsler and A. Barbaro Galtieri and Francesco De Lorenzi and V. A. Giakoumopoulou and Emmerich Kneringer and Ogul Arslan and Beniamino Di Girolamo and Hatice Duran Yildiz and Gustavo Otero y Garzon and Alastair Dewhurst and Steffen Maeland and Gaetano Barone and Meisam Ghasemi Bostanabad and Yu. V. Usov and Victoria Castillo Gimenez and Giuseppe Conti and Philip James Clark and Ji Hyung Yu and E. Benhar Noccioli and J. Hrivnac and Nora Emilia Pettersson and A. A. Grillo and Stefano Camarda and Robert Hickling and Isao Ueda and Matthew Beckingham and Michael Bender and Maximilian Swiatlowski and John Peter Mattmann and P. Bourdon and Lee Beresford and Hartmut Sadrozinski and Yu.V. Yudin and Dimargaritaceae R. K. Benjamin and Kerstin Tackmann and Lydia Beresford and Ch. Stegmann and Holger Schulz and E. Bergeaas Kuutmann and Benjamin Bordy Tannenwald and Daniel Camarero Munoz and Martin Hoeferkamp and Simon Paul Berlendis and Veronica Wallangen and W. Waltenberger and Manuella Greta Vincter and Julien-christopher Beyer and E. Hines and Florian Urs Bernlochner and Vladimir Nikolaenko and Mark Sosebee and Alessandro Di Girolamo and Olga Bessidskaia Bylund and Markus Elsing and O. Bessidskaia Bylund and Siegfried Bethke and Alaettin Serhan Mete and Christopher Betancourt and T. R. V. Billoud and Halina Bilokon and Nektarios Benekos and Galo Rafael Gonzalvo Rodriguez and Linquan Yao and Immanuel Bloch and Christopher John Mcnicol and Katharina Bierwagen and Thomas Remy Victor Billoud and Harry van der Graaf and Travaughn Bain and Guido Ciapetti and Jyoti Prakash Biswal and Chase Shimmin and Stephanie Hamilton and Nikola Lazar Whallon and P. Gagnon and George Sedov and Lorenzo Bianchini and Paul Soueid and Sinead Farrington and Alessandro Cerri and Pasquale Fabrizio Salvatore and Jon C. Henderson and Philipp Schwegler and Yang Qin and C. G. Leggett and Benedict Allbrooke and Michela Biglietti and Danijela Bogavac and Johan Sebastian Bonilla and Federico M Giorgi and Evangelos Leonidas Gkougkousis and Thomas Heim and Valerio Bortolotto and David Eduardo Sosa Corral and Carlo Gatti and Christian A. Gutschow and Jonathan David Bossio Sola and Francesco Lo Sterzo and Lei Li and Monica Dunford and Klemens Mueller and Ki Young Choi and Djamel Eddine Boumediene and Mengqing Wu and Priscilla Pani and W. D. Breaden Madden and Fred Luehring and Josephine Wittkowski and Andrzej Olszewski and A. Brandt and Vladimir Smakhtin and Simon Henry Connell and Simon H Connell and Sofia Vallecorsa and Giuseppe Mornacchi and Daniel Britzger and Shikma Bressler and Matthias Danninger and Ariane. L{\'e}ger and Gustaaf Brooijmans and Jorn Dines Hansen and J{\o}rn Bindslev Hansen and Francois Touchard and R. Cherkaoui El Moursli and G. Iakovidis and Attilio Picazio and Kentaro Nagai and Ryne Michael Carbone and Ye Chen and William Brooks and Robert McCarthy and Alessandro De Salvo and Fabian Spettel and Ryunosuke Itoh and Jacquelyn Brosamer and Pawel Bruckman de Renstrom and Gabriela de Andrade Bruni and Yu.G. Smirnov and Steven R. Majewski and Christina Mesropian and Koen Pieter Oussoren and Benjamin Wynne and Philip Bechtle and Miguel Fiolhais and Trygve Buanes and Philipp L{\"o}sel and Alejandro Alonso and Thibault Guillemin and Christina Potter and Jonathan Thomas Peter Burr and Carsten Daniel Burgard and Crisostomo Sciacca and Andrew Nelson and Sooraj Krishnan Radhakrishnan and Mateus Vicente Barreto Pinto and Daniel Moreno and Francesco Maria Spano and Peter Buchholz and Domenica Fiorella Espinoza Moreno and Volker B{\"u}scher and Marcel Michael Stanitzki and Camila de Oliveira Sandoval and Rebecca Jane Falla and S. Cabrera Urb{\'a}n and Giulio Tiziano Forcolin and Young-Kee Kim and R. Camacho Toro and Thomas Ravenscroft and Ray Thompson and Ramiro Rolando Debbe and Konstantin Belotskiy and Alessandro Calandri and Catalin Agheorghiesei and Marta Campanelli and Annabelle Julia Chuinard and Donnchadha Quilty and Alex Martyniuk and B{\o}rge Kile Gjelsten and Patrick Jussel and Lashkar Mohammad Kashif and Thomas Philippe Calvet and Kevin Daniel Finelli and Claire David and Hern{\'a}n D. Reisin and Schuhmann Dos Santos and Giorgio Bellettini and Thomas James Stevenson and Pawel Klimek and J. Cantero and L. William Heinrich and Marcella Capua and C. Kourkoumelis and Roberto Cardarelli and Juan Antonio Garcia Pascual and Andrea Rodriguez Perez and Massimo Corradi and Miloslav Vlas{\'a}k and Chao Wang and Benjamin Charles Carlson and Robert B. Gardner and Bruce. Carlson and N. Norjoharuddeen and Mikhail Danilov and David Alexandre and Albert Francis Casha and M Casolino and Jakub Solc and Gabriella P{\'a}sztor and Gabriele Chiodini and Ch. Geich-Gimbel and Jun Guo and Ljiljana Simi{\'c} and Alessandro Gabrielli and Martin Wessels and Daniel van der Ster and Yan Jie Schnellbach and Thorwald Klapdor-kleingrothaus and Renaud Bruneliere and Dario Sosa and Dilan Fabian Saraza Sosa and Andrew Chegwidden and Sebastian Moritz and Solomon H. Snyder and Joany Andreina Manjarres Ramos and Florian H{\"o}nig and D. Chakraborty and Ryan M. White and Aleksandr Kravchenko and Alexandra Kravchenko and Stefano Veneziano and Robert Francis Hunter and Magda Anna Chelstowska and Andrey Kiryunin and Andrew Beddall and Philippe Luc Yves Gris and Andreas Alexander Maier and Arthur Rene Chomont and Cristian Stanescu and Mohamed Anwar Abdel Haleem and Rajaa Cherkaoui El Moursli and Mark Stephen Neubauer and D. Emeliyanov and Susanne K{\"u}hn and Mario Lassnig and Diana M. Nguyen and Andreas Redelbach and Lincoln Wolfenstein and H. Hakobyan and Hrachya Hakobyan and Pavel {\vS}ťavina and Yu Him Justin Chiu and Nathan Rogers Bernard and Ludovico Pontecorvo and Largo Bruno Pontecorvo and Jonathan Butterworth and Francesco Cirotto and Andreas Korn and Fr{\'e}d{\'e}rick Dallaire and Nataliia Kondrashova and Kun Liu and Nayanka Myriam Bolnet and Alexey Dudarev and Giorgi Arabidze and Roger Caminal Armadans and Geng-Yuan Jeng and Michele Petteni and Yonatan Oren and Claire Bourdarios and John Parsons and S{\'e}bastien Prince and Henric George Sacha Wilkens and Mauro Citterio and Eirik Gramstad and Tim Jones and N. Vassilopoulos and Adam Pingel and Tetiana B. Hryn'ova and Yu. A. Golubkov and M. Ronzani and Steven Schramm and Vlad Boldea and Bill Cleland and Shirong Ye and Yasuhiro Makida},
Many extensions of the Standard Model posit the existence of heavy particles with long lifetimes. This article presents the results of a search for events containing at least one long-lived particle that decays at a significant distance from its production point into two leptons or into five or more charged particles. This analysis uses a data sample of proton-proton collisions at root s = 8 TeV corresponding to an integrated luminosity of 20.3 fb(-1) collected in 2012 by the ATLAS detector… CONTINUE READING


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