Stefania Xella

Stefania Xella

Associate Professor, Guest Researcher


  1. Published

    Observation of Single-Top-Quark Production in Association with a Photon Using the ATLAS Detector

    Aad, G., Abbott, B., Abbott, D., Abeling, K., Abidi, S. H., Aboulhorma, A., Abramowicz, H., Abreu, H., Abulaiti, Y., Abusleme Hoffman, A. C., Dam, Mogens, Camplani, Alessandra, Hansen, Jørgen Beck, Hansen, Peter Henrik, Ignazzi, R., Petersen, Troels Christian, Hansen, Jørn Dines, Wiglesworth, Graig, Xella, Stefania & ATLAS, A., 30 Oct 2023, In: Physical Review Letters. 131, 18, 22 p., 181901.

    Research output: Contribution to journalLetterResearchpeer-review

  2. Published

    Observation of Long-Range Elliptic Azimuthal Anisotropies in root s=13 and 2.76 TeV pp Collisions with the ATLAS Detector

    Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Aben, R., Abolins, M., AbouZeid, O. S., Abramowicz, H., Abreu, H., Abreu, R., Acharya, B. S., Adamczyk, L., Adams, D. L., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Hansen, P. H., Petersen, T. C., Thomsen, L. A. & 7 others, Pingel, A. M., Løvschall-Jensen, A. E., Alonso Diaz, A., Monk, J. W., Pedersen, L. E., Wiglesworth, Graig & Galster, G. A. G. K., 27 Apr 2016, In: Physical Review Letters. 116, 17, 172301.

    Research output: Contribution to journalJournal articleResearchpeer-review

  3. Published

    Observation of Light-by-Light Scattering in Ultraperipheral Pb plus Pb Collisions with the ATLAS Detector

    ATLAS Collaboration, A. C., 31 Jul 2019, In: Physical Review Letters. 123, 5, 21 p., 052001.

    Research output: Contribution to journalJournal articleResearchpeer-review

  4. Published

    Observation of Higgs boson production in association with a top quark pair at the LHC with the ATLAS detector

    Aaboud, M., Aad, A., Abbott, B., Abdinov, O., Abeloos, B., Abhayasinghe, DK., Abidi, S. H., Abouzeid, O. S. A., Abraham, NL., Abramowicz, H., Abreu, H., Abulaiti, Y., Acharya, B. S., Adachi, S., Adamczyk, L., Adelman, J., Adersberger, M., Adiguzel, A., Adye, T., Affolder, A. A. & 17 others, Afik, Y., Agheorghiesei, C., Bajic, M., Besjes, G., Alonso Diaz, A., Dam, Mogens, de Almeida Dias, F., Galster, G. A. G. K., Hansen, Jørgen Beck, Hansen, Jørn Dines, Hansen, Peter Henrik, Monk, J. W., Petersen, Troels Christian, Stark, S. H., Thiele, F. A. J., Xella, Stefania & Wiglesworth, Graig, 10 Sep 2018, In: Physics Letters B. 784, p. 173-191 19 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  5. Published

    Observation of H -> b(b)over-bar decays and V H production with the ATLAS detector

    Aaboud, M., Aad, G., Abbott, B., Abdinov, O., Abeloos, B., Abhayasinghe, DK., Abidi, S. H., Abouzeid, O. S. A., Abraham, NL., Abramowicz, H., Abreu, H., Abulaiti, Y., Acharya, B. S., Adachi, S., Adam, L., Adamczyk, L., Adelman, J., Adersberger, M., Adiguzel, A., Adye, T. & 19 others, Affolder, A. A., Afik, Y., Agheorghiesei, C., Aguilar-Saavedra, J. A., Alonso Diaz, A., Besjes, G., Bajic, M., Dam, Mogens, de Almeida Dias, F., Galster, G. A. G. K., Hansen, Peter Henrik, Hansen, Jørn Dines, Hansen, Jørgen Beck, Monk, J. W., Petersen, Troels Christian, Thiele, F. A. J., Stark, S. H., Wiglesworth, Graig & Xella, Stefania, 10 Nov 2018, In: Physics Letters B. 786, p. 59-86 28 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  6. Published

    Observation of Electroweak Production of a Same-Sign W Boson Pair in Association with Two Jets in pp Collisions root s=13 TeV with the ATLAS Detector

    ATLAS, A., 15 Oct 2019, In: Physical Review Letters. 123, 16, 21 p., 161801.

    Research output: Contribution to journalJournal articleResearchpeer-review

  7. Published

    Observation of Centrality-Dependent Acoplanarity for Muon Pairs Produced via Two-Photon Scattering in Pb plus Pb Collisions at root s(NN)=5.02 TeV with the ATLAS Detector

    Aaboud, M., Aad, G., Abbott, B., Abdinov, O., Abeloos, B., Abhayasinghe, DK., Abidi, S. H., Abouzeid, O. S. A., Abraham, NL., Abramowicz, H., Abreu, H., Abulaiti, Y., Acharya, B. S., Adachi, S., Adamczyk, L., Adelman, J., Adersberger, M., Adiguzel, A., Adye, T., Affolder, A. A. & 19 others, Afik, Y., Agheorghiesei, C., Aguilar-Saavedra, J. A., Ahmadov, F., Alonso Diaz, A., Bajic, M., Besjes, G., Dam, Mogens, de Almeida Dias, F., Hansen, Jørgen Beck, Hansen, Peter Henrik, Hansen, Jørn Dines, Galster, G. A. G. K., Monk, J. W., Petersen, Troels Christian, Thiele, F. A. J., Stark, S. H., Wiglesworth, Graig & Xella, Stefania, 19 Nov 2018, In: Physical Review Letters. 121, 21, 21 p., 212301.

    Research output: Contribution to journalJournal articleResearchpeer-review

  8. Published

    Observation of Associated Near-Side and Away-Side Long-Range Correlations in root S-NN=5.02 TeV Proton-Lead Collisions with the ATLAS Detector

    Aad, G., Abajyan, T., Abbott, B., Abdallah, J., Khalek, S. A., 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., Løvschall-Jensen, A. E., Mehlhase, S., Nilsson, B. S., Petersen, Troels Christian & Xella, Stefania, 1 May 2013, In: Physical Review Letters. 110, 18, 182302.

    Research output: Contribution to journalJournal articleResearchpeer-review

  9. Published

    Observation and measurements of the production of prompt and non-prompt J/psi mesons in association with a Z boson in pp collisions at root s=8 TeV with the ATLAS detector

    Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, SA., Abdinov, O., Aben, R., Abi, B., Abolins, M., AbouZeid, O. S., Abramowicz, H., 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. & 6 others, Løvschall-Jensen, A. E., Alonso Diaz, A., Monk, J. W., Pedersen, L. E., Wiglesworth, Graig & Galster, G. A. G. K., 27 May 2015, In: The European Physical Journal C: Particles and Fields. 75, 5, 229.

    Research output: Contribution to journalJournal articleResearchpeer-review

  10. Published

    Observation and measurement of forward proton scattering in association with lepton pairs produced via the photon fusion mechanism at ATLAS

    Aad, G., Abbott, B., Abbott, DC., Abud, AA., Abeling, K., Abhayasinghe, D. K., Abidi, S. H., AbouZeid, O. S. A., Abraham, N., Abramowicz, H., Abreu, H., Abulaiti, Y., Acharya, B. S., Achkar, B., Adam, L., Camplani, A., Dam, M., hqz214, H., Galster, G. A. G. K., Hansen, J. D. & 9 others, Hansen, Peter Henrik, Hansen, Jørgen Beck, Ignazzi, R., Monk, J. W., Petersen, Troels Christian, Stark, S. H., Wiglesworth, Graig, Xella, Stefania & ATLAS Collaboration, A. C., 23 Dec 2020, In: Physical Review Letters. 125, 26, 21 p., 261801.

    Research output: Contribution to journalJournal articleResearchpeer-review

  11. Published

    Observation and measurement of Higgs boson decays to WW* with the ATLAS detector

    Aad, A., Abbott, B., Abdallah, J., Abdel Khalek, S. A., Abdinov, O., Aben, R., Abi, B., Abolins, M., AbouZeid, O. S., Abramowicz, H., 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. & 6 others, Løvschall-Jensen, A. E., Alonso Diaz, A., Monk, J. W., Pedersen, L. E., Wiglesworth, Graig & Galster, G. A. G. K., 21 Jul 2015, In: Physical Review D (Particles, Fields, Gravitation and Cosmology). 92, 1, 012006.

    Research output: Contribution to journalJournal articleResearchpeer-review

  12. Published

    New techniques for jet calibration with the ATLAS detector

    Aad, G., Abbott, B., Abeling, K., Abicht, N. J., Abidi, S. H., Aboulhorma, A., Abramowicz, H., Abreu, H., Abulaiti, Y., Abusleme Hoffman, A. C., Dam, Mogens, Camplani, Alessandra, Hansen, Jørn Dines, Hansen, Jørgen Beck, Hansen, Peter Henrik, Ignazzi, R., Petersen, Troels Christian, Wiglesworth, Graig, Xella, Stefania & ATLAS, A., 29 Aug 2023, In: European Physical Journal C. 83, 8, 41 p., 761.

    Research output: Contribution to journalJournal articleResearchpeer-review

  13. Published

    Muon reconstruction performance of the ATLAS detector in proton-proton collision data at root s=13 TeV

    Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Abeloos, B., Aben, R., Abolins, M., AbouZeid, O. S., Abraham, N. L., Abramowicz, H., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Hansen, P. H., Petersen, T. C., Mehlhase, S., Pingel, A. M., Alonso Diaz, A., Monk, J. W. & 4 others, Galster, G. A. G. K., Thomsen, L. A., Løvschall-Jensen, A. E. & Pedersen, L. E., 25 May 2016, In: European Physical Journal C. 76, 5, 292.

    Research output: Contribution to journalJournal articleResearchpeer-review

  14. Published

    Muon reconstruction efficiency and momentum resolution of the ATLAS experiment in proton–proton collisions at √s=7 TeV in 2010

    Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdelalim, A. A., 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., Galster, G. A. G. K., Jørgensen, M. D., Pingel, A. M. & 5 others, Løvschall-Jensen, A. E., Alonso Diaz, A., Monk, J. W., Pedersen, L. E. & Wiglesworth, Graig, 16 Sep 2014, In: The European Physical Journal C: Particles and Fields. 74, 3034.

    Research output: Contribution to journalJournal articleResearchpeer-review

  15. Published

    Muon reconstruction and identification efficiency in ATLAS using the full Run 2 pp collision data set at s=13 TeV

    Aad, G., Abbott, B., Abbott, D., Abud, A., Abeling, K., Abhayasinghe, D. K., Abidi, S. H., AbouZeid, O. S. A., Abraham, N., Abramowicz, H., Camplani, Alessandra, Dam, Mogens, Hansen, Jørn Dines, Hansen, Jørgen Beck, Hansen, Peter Henrik, Ignazzi, R., Wiglesworth, Graig, Petersen, Troels Christian, Xella, Stefania & ATLAS Collaboration, A. C., 5 Jul 2021, In: European Physical Journal C. 81, 7, 44 p., 578.

    Research output: Contribution to journalJournal articleResearchpeer-review

  16. Published

    Multi-channel search for squarks and gluinos in root s=7 TeV pp collisions with the ATLAS detector at the LHC

    Aad, G., Abajyan, T., Abbott, B., Abdallah, J., Khalek, S. A., Dam, Mogens, Hansen, Jørgen Beck, Hansen, John Renner, Hansen, Peter Henrik, 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 Mar 2013, In: European Physical Journal C. 73, 3, 2362.

    Research output: Contribution to journalJournal articleResearchpeer-review

  17. Published

    Monte Carlo tools for Beyond the Standard Model Physics , April 14-16

    Badger...[et al.], S., rtc312, rtc312, Dalsgaard, H. H., Jørgensen, M. D., Dam, Mogens, Damgaard, Poul Henrik, Gaardhøje, Jens Jørgen, Hansen, Jørgen Beck, Hansen, Peter Henrik, Gregersen, K. A., Jez, P., Kim, J., Nesseris, S., Nielsen, Børge Svane, Nygaard, C., Petersen, Troels Christian, Søndergaard, U., Thomsen, L. A., Søgaard, C. & Xella, Stefania, 14 Apr 2010, København

    Research output: Other contributionResearch

  18. Published

    Monitoring and data quality assessment of the ATLAS liquid argon calorimeter

    Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Aben, R., Abi, B., Abolins, M., Dam, M., Hansen, J. D., Galster, G. A. G. K., Hansen, J. B., Xella, S., Hansen, P. H., Petersen, T. C., Thomsen, L. A., Mehlhase, S., Jørgensen, M. D., Pingel, A. M., Alonso Diaz, A. & 4 others, Løvschall-Jensen, A. E., Monk, J. W., Pedersen, L. E. & Wiglesworth, Graig, 16 May 2014, In: Journal of Instrumentation. 9, 39 p., P07024.

    Research output: Contribution to journalJournal articleResearchpeer-review

  19. Published

    Modelling radiation damage to pixel sensors in the ATLAS detector

    ATLAS, A., 20 Jun 2019, In: Journal of Instrumentation. 14, 53 p., P06012.

    Research output: Contribution to journalJournal articleResearchpeer-review

  20. Published

    Modelling and computational improvements to the simulation of single vector-boson plus jet processes for the ATLAS experiment

    Aad, G., Abbott, B., Abbott, D., Abud, A., Abeling, K., Abhayasinghe, D. K., Abidi, S. H., Aboulhorma, A., Abramowicz, H., Abreu, H., Dam, Mogens, Camplani, Alessandra, Hansen, Peter Henrik, Hansen, Jørgen Beck, Hansen, Jørn Dines, Petersen, Troels Christian, Ignazzi, R., Wiglesworth, Graig, Xella, Stefania & ATLAS Collaboration, A. C., 5 Aug 2022, In: Journal of High Energy Physics (Online). 8, 61 p., 089.

    Research output: Contribution to journalJournal articleResearchpeer-review

  21. Published

    Modelling Z -> tau tau processes in ATLAS with tau-embedded Z -> mu mu data

    Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Aben, R., Abolins, M., AbouZeid, O. S., Abramowicz, H., Abreu, H., Abreu, R., 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. & 6 others, Løvschall-Jensen, A. E., Alonso Diaz, A., Monk, J. W., Pedersen, L. E., Wiglesworth, Graig & Galster, G. A. G. K., 1 Sep 2015, In: Journal of Instrumentation. 10, P09018.

    Research output: Contribution to journalJournal articleResearchpeer-review

  22. Published

    Model-independent search for the presence of new physics in events including H → γγ with √s = 13 TeV pp data recorded by the ATLAS detector at the LHC

    Aad, G., Abbott, B., Abbott, DC., Abeling, K., Abidi, S. H., Aboulhorma, A., Abramowicz, H., Abreu, H., Abulaiti, Y., Abusleme Hoffman, A. C., Acharya, B. S., Dam, M., Camplani, A., Hansen, J. B., Hansen, J. D., Hansen, P. H., Ignazzi, R., Petersen, T. C., Wiglesworth, G., Xella, S. & 1 others, ATLAS, A., 24 Jul 2023, In: Journal of High Energy Physics (Online). 2023, 07, 51 p., 176.

    Research output: Contribution to journalJournal articleResearchpeer-review

  23. Published

    Medium-Induced Modification of Z-Tagged Charged Particle Yields in Pb plus Pb Collisions at 5.02 TeV with the ATLAS Detector

    Aad, G., Abbott, B., Abbott, DC., Abud, AA., Abeling, K., Abhayasinghe, D. K., Abidi, S. H., AbouZeid, O. S. A., Abraham, NL., Abramowicz, H., Abreu, H., Abulaiti, Y., Acharya, B. S., Achkar, B., Adam, L., Alonso Diaz, A., Bajic, M., Dam, M., Camplani, A., de Almeida Dias, F. & 12 others, hqz214, H., Galster, G. A. G. K., Hansen, Jørn Dines, Hansen, Jørgen Beck, Hansen, Peter Henrik, Ignazzi, R., Monk, J. W., Petersen, Troels Christian, Stark, S. H., Wiglesworth, Graig, Xella, Stefania & ATLAS Collaboration, A. C., 19 Feb 2021, In: Physical Review Letters. 126, 7, 20 p., 072301.

    Research output: Contribution to journalLetterResearchpeer-review

  24. Published

    Measurements of underlying-event properties using neutral and charged particles in pp collisions at vs= 900 GeV and vs= 7 TeV with the ATLAS detector at the LHC

    Aad...[et al.], G., Dam, Mogens, Hansen, John Renner, Hansen, Jørgen Beck, Hansen, Jørn Dines, Hansen, Peter Henrik, Jørgensen, M. D., Klinkby, E. B., Petersen, Troels Christian, Xella, Stefania, Boelaert, N. M. P. & Kittelmann, T. H., 1 May 2011, In: European Physical Journal C. 71, 5, p. 1636 24 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  25. Published

    Measurements of top-quark pair to Z-boson cross-section ratios at root s=13, 8, 7 TeV with the ATLAS detector

    Aaboud, M., Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Abeloos, B., Abidi, S., AbouZeid, O. S., Abraham, NL., Abramowicz, H., Abreu, H., Abreu, R., Abulaiti, Y., Acharya, B. S., Adachi, S., Adamczyk, L., Adams, D. L., Adelman, J. P., Adye, T., Dam, M. & 16 others, Hansen, Jørn Dines, Hansen, Jørgen Beck, Xella, Stefania, Hansen, Peter Henrik, Petersen, Troels Christian, Løvschall-Jensen, A. E., xtf324, X., Monk, J. W., Pedersen, L. E., Wiglesworth, Graig, Galster, G. A. G. K., Stark, S. H., Besjes, G., Thiele, F. A. J., de Almeida Dias, F. & Bajic, M., 23 Feb 2017, In: Journal of High Energy Physics. 2017, 2, p. 1-54 117.

    Research output: Contribution to journalJournal articleResearchpeer-review

ID: 7582