Search for squarks in R-parity violating supersymmetry in ep collisions at HERA

Research output: Contribution to journalArticle

Abstract

A search for squarks in R-parity violating super-symmetry is performed in e(+/-)p collisions at HERA using the H1 detector. The full data sample taken at a centre-of-mass energy root s = 319 GeV is used for the analysis, corresponding to an integrated luminosity of 255 pb(-1) of e(+)p and 183 pb(-1) of e(-)p collision data. The resonant production of squarks via a Yukawa coupling. lambda' is considered, taking into account direct and indirect R-parity violating decay modes. Final states with jets and leptons are investigated. No evidence for squark production is found and mass dependent limits on lambda' are obtained in the framework of the Minimal Supersymmetric Standard Model and in the Minimal Super-gravity Model. In the considered part of the parameter space, for a Yukawa coupling of electromagnetic strength lambda' = 0.3, squarks of all flavours are excluded up to masses of 275 GeV at 95% confidence level, with down-type squarks further excluded up to masses of 290 GeV.

Details

Authors
  • F. D. Aaron
  • C. Alexa
  • V. Andreev
  • S. Backovic
  • A. Baghdasaryan
  • S. Baghdasaryan
  • E. Barrelet
  • W. Bartel
  • K. Begzsuren
  • A. Belousov
  • J. C. Bizot
  • V. Boudry
  • I. Bozovic-Jelisavcic
  • J. Bracinik
  • G. Brandt
  • M. Brinkmann
  • V. Brisson
  • D. Britzger
  • D. Bruncko
  • A. Bunyatyan
  • G. Buschhorn
  • L. Bystritskaya
  • A. J. Campbell
  • K. B. Cantun Avila
  • F. Ceccopieri
  • K. Cerny
  • V. Cerny
  • V. Chekelian
  • A. Cholewa
  • J. G. Contreras
  • J. A. Coughlan
  • J. Cvach
  • J. B. Dainton
  • K. Daum
  • B. Delcourt
  • J. Delvax
  • E. A. DeWolf
  • C. Diaconu
  • M. Dobre
  • V. Dodonov
  • A. Dossanov
  • A. Dubak
  • G. Eckerlin
  • S. Egli
  • A. Eliseev
  • E. Elsen
  • L. Favart
  • A. Fedotov
  • R. Felst
  • J. Feltesse
  • J. Ferencei
  • D. -J. Fischer
  • M. Fleischer
  • A. Fomenko
  • E. Gabathuler
  • J. Gayler
  • S. Ghazaryan
  • A. Glazov
  • L. Goerlich
  • N. Gogitidze
  • M. Gouzevitch
  • C. Grab
  • A. Grebenyuk
  • T. Greenshaw
  • B. R. Grell
  • G. Grindhammer
  • S. Habib
  • D. Haidt
  • C. Helebrant
  • R. C. W. Henderson
  • E. Hennekemper
  • H. Henschel
  • M. Herbst
  • G. Herrera
  • M. Hildebrandt
  • K. H. Hiller
  • D. Hoffmann
  • R. Horisberger
  • T. Hreus
  • F. Huber
  • M. Jacquet
  • X. Janssen
  • A. W. Jung
  • H. Jung
  • M. Kapichine
  • J. Katzy
  • I. R. Kenyon
  • C. Kiesling
  • M. Klein
  • C. Kleinwort
  • T. Kluge
  • A. Knutsson
  • R. Kogler
  • P. Kostka
  • M. Kraemer
  • J. Kretzschmar
  • K. Krueger
  • K. Kutak
  • M. P. J. Landon
  • W. Lange
  • G. Lastovicka-Medin
  • P. Laycock
  • A. Lebedev
  • V. Lendermann
  • S. Levonian
  • K. Lipka
  • B. List
  • J. List
  • N. Loktionova
  • R. Lopez-Fernandez
  • V. Lubimov
  • A. Makankine
  • E. Malinovski
  • P. Marage
  • H. -U. Martyn
  • S. J. Maxfield
  • A. Mehta
  • A. B. Meyer
  • H. Meyer
  • J. Meyer
  • S. Mikocki
  • I. Milcewicz-Mika
  • F. Moreau
  • A. Morozov
  • J. V. Morris
  • M. U. Mozer
  • M. Mudrinic
  • K. Mueller
  • Th. Naumann
  • P. R. Newman
  • C. Niebuhr
  • D. Nikitin
  • G. Nowak
  • K. Nowak
  • J. E. Olsson
  • Sakar Osman
  • D. Ozerov
  • P. Pahl
  • V. Palichik
  • I. Panagoulias
  • M. Pandurovic
  • Th. Papadopoulou
  • C. Pascaud
  • G. D. Patel
  • E. Perez
  • A. Petrukhin
  • I. Picuric
  • S. Piec
  • H. Pirumov
  • D. Pitzl
  • R. Placakyte
  • B. Pokorny
  • R. Polifka
  • B. Povh
  • V. Radescu
  • N. Raicevic
  • T. Ravdandorj
  • P. Reimer
  • E. Rizvi
  • P. Robmann
  • R. Roosen
  • A. Rostovtsev
  • M. Rotaru
  • J. E. Ruiz Tabasco
  • S. Rusakov
  • D. Salek
  • D. P. C. Sankey
  • M. Sauter
  • E. Sauvan
  • S. Schmitt
  • L. Schoeffel
  • A. Schoening
  • H. -C. Schultz-Coulon
  • F. Sefkow
  • L. N. Shtarkov
  • S. Shushkevich
  • T. Sloan
  • I. Smiljanic
  • Y. Soloviev
  • P. Sopicki
  • D. South
  • V. Spaskov
  • A. Specka
  • Z. Staykova
  • M. Steder
  • B. Stella
  • G. Stoicea
  • U. Straumann
  • D. Sunar
  • T. Sykora
  • G. Thompson
  • P. D. Thompson
  • T. Toll
  • T. H. Tran
  • D. Traynor
  • P. Truoel
  • I. Tsakov
  • B. Tseepeldorj
  • J. Turnau
  • K. Urban
  • A. Valkarova
  • C. Vallee
  • P. Van Mechelen
  • Y. Vazdik
  • M. von den Driesch
  • D. Wegener
  • E. Wuensch
  • J. Zacek
  • J. Zalesak
  • Z. Zhang
  • A. Zhokin
  • H. Zohrabyan
  • F. Zomer
Organisations
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Subatomic Physics
Original languageEnglish
JournalEuropean Physical Journal C. Particles and Fields
Volume71
Issue number3
Publication statusPublished - 2011
Publication categoryResearch
Peer-reviewedYes