Stefania Xella

Stefania Xella

Associate Professor, Guest Researcher


  1. Published

    Observation of a New ¿b State in Radiative Transitions to ¿(1S) and ¿(2S) at ATLAS

    Aad, G., Dam, Mogens, Boelaert, N. M. P., Hansen, Jørgen Beck, Hansen, Peter Henrik, Hansen, John Renner, Hansen, Jørn Dines, Heisterkamp, S. J. F., Jørgensen, M. D., Klinkby, E. B., Mehlhase, S., Nilsson, B. S., Petersen, Troels Christian, Løvschall-Jensen, A. E. & Xella, Stefania, 9 Apr 2012, In: Physical Review Letters. 108, 15, p. 152001

    Research output: Contribution to journalJournal articleResearchpeer-review

  2. Published

    Measurement of ttbar production with a veto on additional central jet activity in pp collisions at sqrt(s) = 7 TeV using the ATLAS detector

    Aad, G., Boelaert, N. M. P., Dam, Mogens, Hansen, Jørgen Beck, Hansen, Peter Henrik, Hansen, Jørn Dines, Hansen, John Renner, Heisterkamp, S. J. F., Jørgensen, M. D., Klinkby, E. B., Mehlhase, S., Nilsson, B. S., Petersen, Troels Christian, Løvschall-Jensen, A. E. & Xella, Stefania, 20 Jun 2012, In: European Physical Journal C. 72, p. 2043

    Research output: Contribution to journalJournal articleResearchpeer-review

  3. Published

    Search for tb Resonances in Proton-Proton Collisions at vs=7¿¿TeV with the ATLAS Detector

    Aad, G., Dam, Mogens, Hansen, Jørgen Beck, Hansen, Peter Henrik, Hansen, Jørn Dines, Hansen, John Renner, Mehlhase, S., Heisterkamp, S. J. F., Boelaert, N. M. P., Jørgensen, M. D., Petersen, Troels Christian, Klinkby, E. B., Nilsson, B. S., Løvschall-Jensen, A. E. & Xella, Stefania, 21 Aug 2012, In: Physical Review Letters. 109, 8, p. 081801

    Research output: Contribution to journalJournal articleResearchpeer-review

  4. Published

    Search for lepton flavour violation in the e mu continuum with the ATLAS detector in sqrt(s) = 7 TeV pp collisions at the LHC

    Aad, G., Dam, Mogens, Hansen, Jørgen Beck, Hansen, Peter Henrik, Hansen, Jørn Dines, Hansen, John Renner, Heisterkamp, S. J. F., Boelaert, N. M. P., Mehlhase, S., Jørgensen, M. D., Petersen, Troels Christian, Nilsson, B. S., Klinkby, E. B., Løvschall-Jensen, A. E. & Xella, Stefania, 28 Jun 2012, In: European Physical Journal C. 72, 6, p. 2040

    Research output: Contribution to journalJournal articleResearchpeer-review

  5. Published

    Search for first generation scalar leptoquarks in pp collisions at sqrt(s) = 7 TeV with the ATLAS detecto

    Aad, G., Dam, Mogens, Boelaert, N. M. P., Hansen, Jørgen Beck, Hansen, Jørn Dines, Hansen, Peter Henrik, Hansen, John Renner, Heisterkamp, S. J. F., Klinkby, E. B., Jørgensen, M. D., Mehlhase, S., Nilsson, B. S., Petersen, Troels Christian, Xella, Stefania, Lundqvist, J. M. & Løvschall-Jensen, A. E., 23 Mar 2012, In: Physics Letters B. 711, 5, p. 442-455 13 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  6. Published

    A Particle Consistent with the Higgs Boson Observed with the ATLAS Detector at the Large Hadron Collider

    Aad, G., Dam, Mogens, Hansen, Jørgen Beck, Hansen, Peter Henrik, Hansen, John Renner, Hansen, Jørn Dines, Løvschall-Jensen, A. E., Jørgensen, M. D., Boelaert, N. M. P., Heisterkamp, S. J. F., Klinkby, E. B., Mehlhase, S., Nilsson, B. S., Petersen, Troels Christian & Xella, Stefania, 21 Dec 2012, In: Science. 338, 6114, p. 1576-1582

    Research output: Contribution to journalJournal articleResearchpeer-review

  7. Published

    A measurement of the ratio of the W and Z cross sections with exactly one associated jet in pp collisions at sqrt(s) = 7 TeV with ATLAS

    Aad, G., Dam, Mogens, Boelaert, N. M. P., Hansen, Jørgen Beck, Hansen, Peter Henrik, Hansen, John Renner, Hansen, Jørn Dines, Heisterkamp, S. J. F., Jørgensen, M. D., Klinkby, E. B., Mehlhase, S., Nilsson, B. S., Petersen, Troels Christian & Xella, Stefania, 28 Feb 2012, In: Physics Letters B. 708, 3-5, p. 221-240 19 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  8. Published

    Measurement of the centrality dependence of the charged particle pseudorapidity distribution in lead-lead collisions at sqrt(s_NN) = 2.76 TeV with the ATLAS detector

    Aad, G., Dam, Mogens, Hansen, Jørgen Beck, Hansen, Peter Henrik, Hansen, John Renner, Hansen, Jørn Dines, Heisterkamp, S. J. F., Jørgensen, M. D., Boelaert, N. M. P., Klinkby, E. B., Mehlhase, S., Nilsson, B. S., Petersen, Troels Christian, Løvschall-Jensen, A. E. & Xella, Stefania, 12 Apr 2012, In: Physics Letters B. 710, 3, p. 363-382 19 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  9. Published

    Measurement of the cross section for the production of a W boson in association with b-jets in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector

    Aad, G., Dam, Mogens, Hansen, Jørgen Beck, Hansen, Peter Henrik, Hansen, Jørn Dines, Hansen, John Renner, Heisterkamp, S. J. F., Jørgensen, M. D., Klinkby, E. B., Mehlhase, S., Nilsson, B. S., Boelaert, N. M. P., Petersen, Troels Christian & Xella, Stefania, 7 Feb 2012, In: Physics Letters B. 707, 5, p. 418-437 19 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  10. Published

    Search for the Standard Model Higgs boson in the H¿WW(¿)¿l¿l¿ decay mode with 4.7 fb-1 of ATLAS data at

    Aad, G., Dam, Mogens, Hansen, Jørgen Beck, Hansen, John Renner, Hansen, Peter Henrik, Hansen, Jørn Dines, Heisterkamp, S. J. F., Klinkby, E. B., Jørgensen, M. D., Nilsson, B. S., Mehlhase, S., Petersen, Troels Christian, Boelaert, N. M. P., Løvschall-Jensen, A. E. & Xella, Stefania, 17 Sep 2012, In: Physics Letters B. 716, 1, p. 62-81

    Research output: Contribution to journalJournal articleResearchpeer-review

  11. Published

    Search for the Standard Model Higgs boson in the H -> tau(+)tau(-) decay mode in root s=7 TeV pp collisions with ATLAS

    Aad, G., Dam, Mogens, Hansen, Jørn Dines, Hansen, Jørgen Beck, Hansen, John Renner, Hansen, Peter Henrik, Heisterkamp, S. J. F., Boelaert, N. M. P., Klinkby, E. B., Jørgensen, M. D., Petersen, Troels Christian, Nilsson, B. S., Xella, Stefania, Løvschall-Jensen, A. E. & Mehlhase, S., 1 Sep 2012, In: Journal of High Energy Physics (Online). 2012, 9, p. 070

    Research output: Contribution to journalJournal articleResearchpeer-review

  12. Published

    Search for supersymmetry in pp collisions at sqrt(s) = 7 TeV in final states with missing transverse momentum and b-jets with the ATLAS detector

    Aad, G., Dam, Mogens, Hansen, Jørgen Beck, Hansen, Peter Henrik, Hansen, Jørn Dines, Hansen, John Renner, Heisterkamp, S. J. F., Jørgensen, M. D., Mehlhase, S., Boelaert, N. M. P., Klinkby, E. B., Nilsson, B. S., Petersen, Troels Christian, Xella, Stefania & Løvschall-Jensen, A. E., 25 Jun 2012, In: Physical Review D (Particles, Fields, Gravitation and Cosmology). 85, 11, p. 112006 29 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  13. Published

    Determination of the Strange-Quark Density of the Proton from ATLAS Measurements of the W¿l¿ and Z¿ll Cross Sections

    Aad, G., Boelaert, N. M. P., Dam, Mogens, Hansen, John Renner, Hansen, Jørgen Beck, Hansen, Peter Henrik, Hansen, Jørn Dines, Heisterkamp, S. J. F., Jørgensen, M. D., Mehlhase, S., Klinkby, E. B., Petersen, Troels Christian, Nilsson, B. S., Løvschall-Jensen, A. E. & Xella, Stefania, 5 Jul 2012, In: Physical Review Letters. 109, 1, p. 012201 17 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  14. Published

    Search for anomalous production of prompt like-sign muon pairs and constraints on physics beyond the standard model with the ATLAS detector

    Aad, G., Dam, Mogens, Boelaert, N. M. P., Hansen, John Renner, Hansen, Jørgen Beck, Hansen, Peter Henrik, Hansen, Jørn Dines, Heisterkamp, S. J. F., Jørgensen, M. D., Mehlhase, S., Klinkby, E. B., Nilsson, B. S., Petersen, Troels Christian & Xella, Stefania, 17 Feb 2012, In: Physical Review D (Particles, Fields, Gravitation and Cosmology). 85, 3, p. 032004

    Research output: Contribution to journalJournal articleResearchpeer-review

  15. Published

    Search for second generation scalar leptoquarks in pp collisions at sqrt(s) = 7 TeV with the ATLAS detector

    Aad, G., Boelaert, N. M. P., Dam, Mogens, Hansen, Jørgen Beck, Hansen, Peter Henrik, Hansen, Jørn Dines, Hansen, John Renner, Heisterkamp, S. J. F., Jørgensen, M. D., Klinkby, E. B., Mehlhase, S., Nilsson, B. S., Petersen, Troels Christian, Løvschall-Jensen, A. E. & Xella, Stefania, 14 Sep 2012, In: European Physical Journal C. 72, p. 2151

    Research output: Contribution to journalJournal articleResearchpeer-review

  16. Published

    Search for excited leptons in proton-proton collisions at vs=7¿¿TeV with the ATLAS detector

    Aad, G., Dam, Mogens, Boelaert, N. M. P., Hansen, Jørgen Beck, Hansen, Peter Henrik, Hansen, John Renner, Hansen, Jørn Dines, Heisterkamp, S. J. F., Jørgensen, M. D., Klinkby, E. B., Mehlhase, S., Nilsson, B. S., Petersen, Troels Christian, Løvschall-Jensen, A. E. & Xella, Stefania, 27 Apr 2012, In: Physical Review D (Particles, Fields, Gravitation and Cosmology). 85, 7, p. 072003

    Research output: Contribution to journalJournal articleResearchpeer-review

  17. Published

    Search for anomaly-mediated supersymmetry breaking with the ATLAS detector based on a disappearing-track signature in pp collisions at sqrt(s) = 7 TeV

    Aad, G., Dam, Mogens, Boelaert, N. M. P., Hansen, Jørgen Beck, Hansen, Peter Henrik, Hansen, John Renner, Hansen, Jørn Dines, Jørgensen, M. D., Heisterkamp, S. J. F., Mehlhase, S., Klinkby, E. B., Nilsson, B. S., Petersen, Troels Christian, Løvschall-Jensen, A. E. & Xella, Stefania, 7 May 2012, In: European Physical Journal C. 72, 4, p. 1993

    Research output: Contribution to journalJournal articleResearchpeer-review

  18. Published

    Search for Pair Production of a Heavy Up-Type Quark Decaying to a W Boson and a b Quark in the lepton+jets Channel with the ATLAS Detector

    Aad, G., Dam, Mogens, Boelaert, N. M. P., Hansen, Jørgen Beck, Hansen, Peter Henrik, Hansen, Jørn Dines, Hansen, John Renner, Heisterkamp, S. J. F., Jørgensen, M. D., Klinkby, E. B., Mehlhase, S., Nilsson, B. S., Petersen, Troels Christian, Løvschall-Jensen, A. E. & Xella, Stefania, 26 Jun 2012, In: Physical Review Letters. 108, 26, p. 261802 18 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  19. Published

    Search for Production of Resonant States in the Photon-Jet Mass Distribution Using pp Collisions at vs=7¿¿TeV Collected by the ATLAS Detector

    Aad, G., Dam, Mogens, Hansen, Jørgen Beck, Hansen, Peter Henrik, Hansen, John Renner, Hansen, Jørn Dines, Heisterkamp, S. J. F., Boelaert, N. M. P., Jørgensen, M. D., Klinkby, E. B., Mehlhase, S., Petersen, Troels Christian, Nilsson, B. S., Xella, Stefania & Løvschall-Jensen, A. E., 22 May 2012, In: Physical Review Letters. 108, 21, p. 211802 18 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  20. Published

    Performance of the ATLAS Trigger System in 2010

    Aad, G., Dam, Mogens, Hansen, Jørgen Beck, Hansen, Peter Henrik, Hansen, John Renner, Hansen, Jørn Dines, Jørgensen, M. D., Heisterkamp, S. J. F., Mehlhase, S., Klinkby, E. B., Nilsson, B. S., Boelaert, N. M. P., Petersen, Troels Christian & Xella, Stefania, 3 Jan 2012, In: European Physical Journal C. 72, 1, p. 1849 49 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  21. Published

    Search for Magnetic Monopoles in root s=7 TeV pp Collisions with the ATLAS Detector

    Aad, G., Dam, Mogens, Hansen, Jørgen Beck, Hansen, Peter Henrik, Hansen, John Renner, Hansen, Jørn Dines, Heisterkamp, S. J. F., Jørgensen, M. D., Boelaert, N. M. P., Klinkby, E. B., Mehlhase, S., Nilsson, B. S., Petersen, Troels Christian, Xella, Stefania & Løvschall-Jensen, A. E., 27 Dec 2012, In: Physical Review Letters. 109, 26, p. 261803

    Research output: Contribution to journalJournal articleResearchpeer-review

  22. Published

    Measurement of the W W cross section in root s=7 TeV pp collisions with the ATLAS detector and limits on anomalous gauge couplings

    Aad, G., Abbott, B., Dam, Mogens, Hansen, Jørgen Beck, Hansen, Peter Henrik, Hansen, John Renner, Hansen, Jørn Dines, Jørgensen, M. D., Heisterkamp, S. J. F., Klinkby, E. B., Løvschall-Jensen, A. E., Boelaert, N. M. P., Mehlhase, S., Nilsson, B. S., Petersen, Troels Christian & Xella, Stefania, 12 Jun 2012, In: Physics Letters B. 712, 4-5, p. 289-308

    Research output: Contribution to journalJournal articleResearchpeer-review

  23. Published

    Search for charged Higgs bosons decaying via H-+/- -> tau nu in t(t)over-bar events using pp collision data at root s=7 TeV with the ATLAS detector

    Aad, G., Abbott, B., Dam, Mogens, Hansen, Jørgen Beck, Hansen, Peter Henrik, Hansen, John Renner, Hansen, Jørn Dines, Heisterkamp, S. J. F., Boelaert, N. M. P., Jørgensen, M. D., Klinkby, E. B., Løvschall-Jensen, A. E., Mehlhase, S., Nilsson, B. S., Petersen, Troels Christian & Xella, Stefania, 1 Jun 2012, In: Journal of High Energy Physics (Online). 2012, 6, p. 039

    Research output: Contribution to journalJournal articleResearchpeer-review

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