Stefania Xella

Stefania Xella

Associate Professor, Guest Researcher


  1. 2023
  2. Published

    Probing the CP nature of the top–Higgs Yukawa coupling in tt¯H and tH events with H→bb¯ decays using 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, L., Acharya, B. S., Dam, M., Camplani, A., Hansen, P. H., Hansen, J. D., Hansen, J. B., Ignazzi, R., Wiglesworth, G., Petersen, T. C., Xella, S. & 1 others, ATLAS Collaboration, A. C., 10 Mar 2023, In: Physics Letters B. 849, 25 p., 138469.

    Research output: Contribution to journalJournal articleResearchpeer-review

  3. Published

    Observation of electroweak production of two jets and a Z-boson pair

    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., Dam, M., Camplani, A., Hansen, J. D., Hansen, J. B., Hansen, P. H., Ignazzi, R., Wiglesworth, G., Petersen, T. C., Xella, S. & 1 others, ATLAS, A., 9 Feb 2023, In: Nature Physics. 19, p. 237-253 18 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  4. Published

    Electron and photon energy calibration with the ATLAS detector using LHC Run 2 data

    Aad, G., Abbott, B., Abeling, K., Abicht, N. J., Abidi, S. H., Aboulhorma, A., Abramowicz, H., Abreu, H., Abulaiti, Y., Acharya, B. S., Dam, Mogens, Hansen, Peter Henrik, Camplani, Alessandra, Hansen, Jørn Dines, Hansen, Jørgen Beck, Ignazzi, R., Wiglesworth, Graig, Petersen, Troels Christian, Xella, Stefania & ATLAS Collaboration, A. C., 5 Feb 2023, In: Journal of Instrumentation. 2024, 19, 58 p., P02009.

    Research output: Contribution to journalJournal articleResearchpeer-review

  5. Published

    Measurement of exclusive pion pair production in proton-proton collisions at √s=7 TeV with 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, Hansen, Jørn Dines, Camplani, Alessandra, Hansen, Jørgen Beck, Hansen, Peter Henrik, Ignazzi, R., Petersen, Troels Christian, Wiglesworth, Graig, Xella, Stefania & ATLAS, A., 2023, In: European Physical Journal C. 83, 7, 28 p., 627.

    Research output: Contribution to journalJournal articleResearchpeer-review

  6. Published

    Observation of an Excess of Dicharmonium Events in the Four-Muon Final State with the ATLAS Detector

    Aad, G., Abbott, B., Abeling, K., Abidi, S. H., Aboulhorma, A., Abramowicz, H., Abreu, H., Abulaiti, Y., Abusleme Hoffman, A. C., Acharya, B. S., Dam, Mogens, Camplani, Alessandra, Ignazzi, R., Hansen, Peter Henrik, Hansen, Jørn Dines, Hansen, Jørgen Beck, Petersen, Troels Christian, Wiglesworth, Graig, Xella, Stefania & ATLAS, A., 2023, In: Physical Review Letters. 131, 15, 22 p., 151902.

    Research output: Contribution to journalLetterResearchpeer-review

  7. Published

    Tools for estimating fake/non-prompt lepton backgrounds with the ATLAS detector at the LHC

    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, Peter Henrik, Hansen, Jørn Dines, Hansen, Jørgen Beck, Ignazzi, R., Petersen, Troels Christian, Wiglesworth, Graig, Xella, Stefania & ATLAS, A., 2023, In: Journal of Instrumentation. 18, 61 p., T11004.

    Research output: Contribution to journalJournal articleResearchpeer-review

  8. 2022
  9. Published

    Measurement of the polarisation of single top quarks and antiquarks produced in the t-channel at root s=13 TeV and bounds on the tWb dipole operator from the ATLAS experiment

    Aad, G., Abbott, B., Abbott, D., Abud, A., Abeling, K., Abhayasinghe, D. K., Abidi, S. H., Abramowicz, H., Abreu, H., Abulaiti, Y., Dam, Mogens, Camplani, Alessandra, Hansen, Jørgen Beck, Hansen, Jørn Dines, Hansen, Peter Henrik, Ignazzi, R., Petersen, Troels Christian, Wiglesworth, Graig, Xella, Stefania & ATLAS Collaboration, A. C., 9 Nov 2022, In: Journal of High Energy Physics (Online). 2022, 11, 62 p., 40.

    Research output: Contribution to journalJournal articleResearchpeer-review

  10. Published

    Search for type-III seesaw heavy leptons in leptonic final states in pp collisions at root s=13 TeV with the ATLAS detector

    Aad, G., Abbott, B., Abbott, DC., Abud, AA., Abeling, K., Abhayasinghe, DK., Abidi, S. H., Abramowicz, H., Abreu, H., Abulaiti, Y., Dam, M., Camplani, A., Petersen, T. C., Hansen, P. H., Hansen, J. D., Hansen, J. B., Ignazzi, R., Wiglesworth, G., Petersen, T. C., Xella, S. & 1 others, ATLAS, A., 3 Nov 2022, In: European Physical Journal C. 82, 11, 30 p., 988.

    Research output: Contribution to journalJournal articleResearchpeer-review

  11. Published

    Search for Higgs boson pair production in the two bottom quarks plus two photons final state in pp collisions at root s=13 TeV with the ATLAS detector

    Aad, G., Abbott, B., Abbott, D., Abud, A., Abeling, K., Abhayasinghe, D. K., Abidi, S. H., Abramowicz, H., Abreu, H., Abulaiti, Y., Dam, Mogens, Camplani, Alessandra, Hansen, Peter Henrik, Hansen, Jørgen Beck, Hansen, Jørn Dines, Ignazzi, R., Wiglesworth, Graig, Petersen, Troels Christian, Xella, Stefania & ATLAS Collaboration, A. C., 6 Sep 2022, In: Physical Review D. 106, 5, 35 p., 052001.

    Research output: Contribution to journalJournal articleResearchpeer-review

  12. Published

    Search for events with a pair of displaced vertices from long-lived neutral particles decaying into hadronic jets in the ATLAS muon spectrometer in pp collisions at root s=13 TeV

    ATLAS Collaboration, A. C., 1 Sep 2022, In: Physical Review D. 106, 3, 28 p., 032005.

    Research output: Contribution to journalJournal articleResearchpeer-review

ID: 7582