Stefania Xella

Stefania Xella

Associate Professor, Guest Researcher


  1. 2014
  2. Published

    Search for direct production of charginos, neutralinos and sleptons in final states with two leptons and missing transverse momentum in pp collisions at sqrt(s) = 8 TeV with the ATLAS detector

    Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Aben, R., Abi, B., Abolins, M., AbouZeid, O. S., Abramowicz, H., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Galster, G. A. G. K., Alonso Diaz, A., Wiglesworth, G., Petersen, T. C., Hansen, P. H., Thomsen, L. A. & 6 others, Mehlhase, S., Jørgensen, M. D., Løvschall-Jensen, A. E., Monk, J. W., Pedersen, L. E. & Pingel, A. M., 16 May 2014, In: Journal of High Energy Physics (Online). 2014, 071.

    Research output: Contribution to journalJournal articleResearchpeer-review

  3. Published

    Search for high-mass dilepton resonances in pp collisions at √s=8  TeV with the ATLAS detector

    Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Aben, R., Abi, B., Abolins, M., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Hansen, P. H., Petersen, T. C., Thomsen, L. A., Galster, G. A. G. K., Mehlhase, S., Jørgensen, M. D., Pingel, A. M., Løvschall-Jensen, A. E. & 4 others, Alonso Diaz, A., Monk, J. W., Pedersen, L. E. & Wiglesworth, Graig, 16 May 2014, In: Physical Review D (Particles, Fields, Gravitation and Cosmology). 90, 30 p., 052005.

    Research output: Contribution to journalJournal articleResearchpeer-review

  4. Published

    Search for microscopic black holes and string balls in final states with leptons and jets with the ATLAS detector at sqrt(s) = 8 TeV

    Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Aben, R., Abi, B., Abolins, M., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Hansen, P. H., Petersen, T. C., Thomsen, L. A., Galster, G. A. G. K., Mehlhase, S., Jørgensen, M. D., Pingel, A. M., Løvschall-Jensen, A. E. & 4 others, Alonso Diaz, A., Monk, J. W., Pedersen, L. E. & Wiglesworth, Graig, 16 May 2014, In: Journal of High Energy Physics (Online). 2014, 103, 48 p., 1408.

    Research output: Contribution to journalJournal articleResearchpeer-review

  5. Published

    Measurement of dijet cross-sections in pp collisions at 7 TeV centre-of-mass energy using the ATLAS detector

    Aad, G., Abajyan, T., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Aben, R., Abi, B., Abolins, M., AbouZeid, O. S., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Hansen, P. H., Petersen, T. C., Galster, G. A. G. K., Jørgensen, M. D., Thomsen, L. A., Mehlhase, S. & 6 others, Løvschall-Jensen, A. E., Alonso Diaz, A., Wiglesworth, Graig, Pingel, A. M., Pedersen, L. E. & Monk, J. W., 14 May 2014, In: Journal of High Energy Physics (Online). 2014, 59.

    Research output: Contribution to journalJournal articleResearchpeer-review

  6. Published

    Operation and performance of the ATLAS semiconductor tracker

    Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Aben, R., Abi, B., Abolins, M., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Hansen, P. H., Jørgensen, M. D., Petersen, T. C., Thomsen, L. A., Alonso Diaz, A., Galster, G. A. G. K., Mehlhase, S., Pingel, A. M. & 4 others, Løvschall-Jensen, A. E., Monk, J. W., Pedersen, L. E. & Wiglesworth, Graig, 29 Apr 2014, In: Journal of Instrumentation. 9, 80 p., P08009.

    Research output: Contribution to journalJournal articleResearchpeer-review

  7. Published

    Measurement of the cross section of high transverse momentum Z→bb¯ production in proton--proton collisions at √s=8TeV with the ATLAS Detector

    Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Aben, R., Abi, B., Abolins, M., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Hansen, P. H., Petersen, T. C., Alonso Diaz, A., Galster, G. A. G. K., Thomsen, L. A., Mehlhase, S., Jørgensen, M. D., Pingel, A. M. & 4 others, Løvschall-Jensen, A. E., Monk, J. W., Pedersen, L. E. & Wiglesworth, Graig, 28 Apr 2014, In: Physics Letters B. 738, p. 25-43 8 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  8. Published

    Measurement of χc1 and χc2 production with √s = 7 TeV pp collisions at ATLAS

    Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Aben, R., Abi, B., Abolins, M., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Hansen, P. H., Petersen, T. C., Pedersen, L. E., Thomsen, L. A., Alonso Diaz, A., Galster, G. A. G. K., Mehlhase, S., Jørgensen, M. D. & 4 others, Pingel, A. M., Løvschall-Jensen, A. E., Monk, J. W. & Wiglesworth, Graig, 28 Apr 2014, In: Journal of High Energy Physics (Online). 2014, 154, 52 p., 1407.

    Research output: Contribution to journalJournal articleResearchpeer-review

  9. Published

    Study of heavy-flavor quarks produced in association with top-quark pairs at root s=7 TeV using the ATLAS detector

    Aad, G., Abajyan, T., Abbott, B., Abdallah, J., Khalek, S. A., Dam, M., Hansen, J. B., Hansen, P. H., Hansen, J. D., Hansen, J. R., Boelaert, N. M. P., Klinkby, E. B., Mehlhase, S., Heisterkamp, S. J. F., Løvschall-Jensen, A. E., Jørgensen, M. D., Petersen, T. C., Xella, S., Kadlecik, P., Jez, P. & 3 others, Jakobsen, S., Gregersen, K. D. & Monk, J. W., 21 Apr 2014, In: Physical Review D (Particles, Fields, Gravitation and Cosmology). 89, 7, 072012.

    Research output: Contribution to journalJournal articleResearchpeer-review

  10. Published

    Search for supersymmetry at √s=8 TeV in final states with jets and two same-sign leptons or three leptons with the ATLAS detector

    Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Aben, R., Abi, B., Abolins, M., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Hansen, P. H., Petersen, T. C., Thomsen, L. A., Mehlhase, S., Jørgensen, M. D., Pingel, A. M., Løvschall-Jensen, A. E., Alonso Diaz, A. & 4 others, Monk, J. W., Pedersen, L. E., Wiglesworth, Graig & Galster, G. A. G. K., 9 Apr 2014, In: Journal of High Energy Physics (Online). 2014, 035, 50 p., 1406.

    Research output: Contribution to journalJournal articleResearchpeer-review

  11. Published

    Electron reconstruction and identification efficiency measurements with the ATLAS detector using the 2011 LHC proton-proton collision data

    Aad, G., Abbott, B., Abdallah, J., Abdelhalim, A. A., Abdel Khalek, S., Abdinov, O., Aben, R., Abi, B., Abolins, M., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Hansen, P. H., Petersen, T. C., Thomsen, L. A., Mehlhase, S., Jørgensen, M. D., Galster, G. A. G. K., Pingel, A. M. & 5 others, Løvschall-Jensen, A. E., Alonso Diaz, A., Monk, J. W., Pedersen, L. E. & Wiglesworth, Graig, 8 Apr 2014, In: The European Physical Journal C: Particles and Fields. 74, p. 1-38 38 p., 2941.

    Research output: Contribution to journalJournal articleResearchpeer-review

  12. Published

    Measurement of the low-mass Drell-Yan differential cross section at √s = 7 TeV using the ATLAS detector

    Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Aben, R., Abi, B., Abolins, M., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Hansen, P. H., Petersen, T. C., Thomsen, L. A., Mehlhase, S., Jørgensen, M. D., Pingel, A. M., Løvschall-Jensen, A. E., Alonso Diaz, A. & 4 others, Monk, J. W., Pedersen, L. E., Wiglesworth, Graig & Galster, G. A. G. K., 4 Apr 2014, In: Journal of High Energy Physics (Online). 2014, 112, 46 p., 1406.

    Research output: Contribution to journalJournal articleResearchpeer-review

  13. Published

    Measurement of the parity-violating asymmetry parameter αb and the helicity amplitudes for the decay Lambdab →J/ψ + Lambda with the ATLAS detector

    Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Aben, R., Abi, B., Abolins, M., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Hansen, P. H., Petersen, T. C., Thomsen, L. A., Mehlhase, S., Jørgensen, M. D., Pingel, A. M., Løvschall-Jensen, A. E., Alonso Diaz, A. & 4 others, Monk, J. W., Pedersen, L. E., Wiglesworth, Graig & Galster, G. A. G. K., 3 Apr 2014, In: Physical Review D (Particles, Fields, Gravitation and Cosmology). 89, 25 p., 092009.

    Research output: Contribution to journalJournal articleResearchpeer-review

  14. Published

    Search for dark matter in events with a Z boson and missing transverse momentum in pp collisions at √s=8 TeV with the ATLAS detector

    Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Aben, R., Abi, B., Abolins, M., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Hansen, P. H., Petersen, T. C., Thomsen, L. A., Mehlhase, S., Jørgensen, M. D., Pingel, A. M., Løvschall-Jensen, A. E., Galster, G. A. G. K. & 4 others, Alonso Diaz, A., Monk, J. W., Pedersen, L. E. & Wiglesworth, Graig, 31 Mar 2014, In: Physical Review D (Particles, Fields, Gravitation and Cosmology). 90, 21 p., 012004.

    Research output: Contribution to journalJournal articleResearchpeer-review

  15. Published

    Search for top quark decays t→qH with H→γγ using the ATLAS detector

    Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Aben, R., Abi, B., Abolins, M., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Hansen, P. H., Petersen, T. C., Thomsen, L. A., Mehlhase, S., Jørgensen, M. D., Pingel, A. M., Løvschall-Jensen, A. E., Alonso Diaz, A. & 4 others, Monk, J. W., Pedersen, L. E., Wiglesworth, Graig & Galster, G. A. G. K., 25 Mar 2014, In: Journal of High Energy Physics (Online). 2014, 008, 40 p., 1406.

    Research output: Contribution to journalJournal articleResearchpeer-review

  16. Published

    Measurements of Four-Lepton Production at the Z Resonance in pp Collisions at √s=7 and 8 TeV with ATLAS

    Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Aben, R., Abi, B., Abolins, M., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Hansen, P. H., Petersen, T. C., Thomsen, L. A., Galster, G. A. G. K., Mehlhase, S., Jørgensen, M. D., Pingel, A. M., Løvschall-Jensen, A. E. & 4 others, Alonso Diaz, A., Monk, J. W., Pedersen, L. E. & Wiglesworth, Graig, 22 Mar 2014, In: Physical Review Letters. 112, 18 p., 231806.

    Research output: Contribution to journalJournal articleResearchpeer-review

  17. Published

    Search for direct top-squark pair production in final states with two leptons in pp collisions at √s= 8TeV with the ATLAS detector

    Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Aben, R., Abi, B., Abolins, M., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Hansen, P. H., Petersen, T. C., Galster, G. A. G. K., Thomsen, L. A., Mehlhase, S., Jørgensen, M. D., Pingel, A. M., Løvschall-Jensen, A. E. & 4 others, Alonso Diaz, A., Monk, J. W., Pedersen, L. E. & Wiglesworth, Graig, 19 Mar 2014, In: Journal of High Energy Physics (Online). 2014, 124, 66 p., 1406.

    Research output: Contribution to journalJournal articleResearchpeer-review

  18. Published

    Measurement of event-plane correlations in √sNN=2.76 TeV lead-lead collisions with the ATLAS detector

    Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Aben, R., Abi, B., Abolins, M., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Hansen, P. H., Petersen, T. C., Thomsen, L. A., Galster, G. A. G. K., Mehlhase, S., Jørgensen, M. D., Pingel, A. M., Løvschall-Jensen, A. E. & 4 others, Alonso Diaz, A., Monk, J. W., Pedersen, L. E. & Wiglesworth, Graig, 3 Mar 2014, In: Physical Review C (Nuclear Physics). 90, 29 p., 024905.

    Research output: Contribution to journalJournal articleResearchpeer-review

  19. Published

    Search for direct production of charginos and neutralinos in events with three leptons and missing transverse momentum in √s= 8TeV pp collisions with the ATLAS detector

    Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Aben, R., Abi, B., Abolins, M., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Hansen, P. H., Petersen, T. C., Thomsen, L. A., Mehlhase, S., Jørgensen, M. D., Galster, G. A. G. K., Pingel, A. M., Løvschall-Jensen, A. E. & 4 others, Alonso Diaz, A., Monk, J. W., Pedersen, L. E. & Wiglesworth, Graig, 27 Feb 2014, In: Journal of High Energy Physics (Online). 2014, 169, 1404.

    Research output: Contribution to journalJournal articleResearchpeer-review

  20. Published

    Measurement of the production of a W boson in association with a charm quark in pp collisions at √s= 7 TeV with the ATLAS detector

    Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Aben, R., Abi, B., Abolins, M., Dam, M., Hansen, J. D., Pedersen, L. E., Hansen, J. B., Xella, S., Hansen, P. H., Petersen, T. C., Galster, G. A. G. K., Thomsen, L. A., Mehlhase, S., Jørgensen, M. D., Pingel, A. M. & 4 others, Løvschall-Jensen, A. E., Alonso Diaz, A., Monk, J. W. & Wiglesworth, Graig, 25 Feb 2014, In: Journal of High Energy Physics (Online). 2014, 068, 1405.

    Research output: Contribution to journalJournal articleResearchpeer-review

  21. Published

    Measurement of the top quark pair production charge asymmetry in proton-proton collisions at 7 TeV using the ATLAS detector

    Aad, G., Abbott, B., Abdallah, J., Abdel-Khalek, S., Abdinov, O., Aben, R., Abi, B., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Hansen, P. H., Petersen, T. C., Thomsen, L. A., Mehlhase, S., Jørgensen, M. D., Pingel, A. M., Løvschall-Jensen, A. E., Alonso Diaz, A., Monk, J. W. & 3 others, Pedersen, L. E., Wiglesworth, Graig & Galster, G. A. G. K., 25 Feb 2014, In: Journal of High Energy Physics (Online). 2014, 177, 107.

    Research output: Contribution to journalJournal articleResearchpeer-review

  22. Published

    The differential production cross section of the ϕ (1020) meson in √ s= 7 TeV pp collisions measured with the ATLAS detector

    Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Aben, R., Abi, B., Abolins, M., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Hansen, P. H., Petersen, T. C., Thomsen, L. A., Mehlhase, S., Jørgensen, M. D., Pingel, A. M., Galster, G. A. G. K., Løvschall-Jensen, A. E. & 4 others, Alonso Diaz, A., Monk, J. W., Pedersen, L. E. & Wiglesworth, Graig, 25 Feb 2014, In: European Physical Journal C. 74, 26 p., 2895.

    Research output: Contribution to journalJournal articleResearchpeer-review

  23. Published

    Search for Higgs boson decays to a photon and a Z boson in pp collisions at √s=7 and 8 TeV with the ATLAS detector

    Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Aben, R., Abi, B., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Hansen, P. H., Petersen, T. C., Thomsen, L. A., Mehlhase, S., Jørgensen, M. D., Galster, G. A. G. K., Pingel, A. M., Løvschall-Jensen, A. E., Alonso Diaz, A. & 3 others, Monk, J. W., Pedersen, L. E. & Wiglesworth, Graig, 13 Feb 2014, In: Physics Letters B. 732, p. 8-27 20 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  24. Published

    Search for Invisible Decays of a Higgs Boson Produced in Association with a Z Boson in ATLAS

    Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Aben, R., Abi, B., Dam, M., Hansen, J. B., Hansen, J. D., Xella, S., Galster, G. A. G. K., Hansen, P. H., Petersen, T. C., Thomsen, L. A., Mehlhase, S., Jørgensen, M. D., Pingel, A. M., Løvschall-Jensen, A. E., Alonso Diaz, A. & 3 others, Monk, J. W., Pedersen, L. E. & Wiglesworth, Graig, 13 Feb 2014, In: Physical Review Letters. 112, 19 p., 201802.

    Research output: Contribution to journalJournal articleResearchpeer-review

  25. Published

    Standalone vertex finding in the ATLAS muon spectrometer

    Aad, A., Abajyan, T., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Aben, R., Abi, B., Abolins, M., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Hansen, P. H., Galster, G. A. G. K., Petersen, T. C., Thomsen, L. A., Mehlhase, S., Jørgensen, M. D., Pingel, A. M. & 5 others, Løvschall-Jensen, A. E., Alonso Diaz, A., Monk, J. W., Pedersen, L. E. & Wiglesworth, Graig, 1 Feb 2014, In: Journal of Instrumentation. 9, P02001.

    Research output: Contribution to journalJournal articleResearchpeer-review

  26. Published

    Measurement of the electroweak production of dijets in association with a Z-boson and distributions sensitive to vector boson fusion in proton-proton collisions at √s= 8 TeV using the ATLAS detector

    Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Aben, R., Abi, B., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Hansen, P. H., Petersen, T. C., Thomsen, L. A., Mehlhase, S., Jørgensen, M. D., Pingel, A. M., Løvschall-Jensen, A. E., Galster, G. A. G. K., Alonso Diaz, A. & 3 others, Monk, J. W., Pedersen, L. E. & Wiglesworth, Graig, 29 Jan 2014, In: Journal of High Energy Physics (Online). 2014, 031, 1404.

    Research output: Contribution to journalJournal articleResearchpeer-review

ID: 7582