Stefania Xella

Stefania Xella

Associate Professor, Guest Researcher


  1. Published

    Search for charged-lepton-flavour violation in Z-boson decays with the ATLAS detector

    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, Ignazzi, R., Hansen, Jørgen Beck, Hansen, Peter Henrik, Hansen, Jørn Dines, Petersen, Troels Christian, Wiglesworth, Graig, Xella, Stefania & ATLAS Collaboration, A. C., 1 Jul 2021, In: Nature Physics. 17, 7, p. 819-825 6 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  2. Published

    Search for pair production of third-generation scalar leptoquarks decaying into a top quark and a tau-lepton 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., AbouZeid, O. S. A., Abraham, N., Abramowicz, H., Camplani, Alessandra, Dam, Mogens, Ignazzi, R., Hansen, Jørgen Beck, Hansen, Jørn Dines, Hansen, Peter Henrik, Petersen, Troels Christian, Wiglesworth, Graig, Xella, Stefania & ATLAS Collaboration, A. C., 30 Jun 2021, In: Journal of High Energy Physics (Online). 2021, 6, 62 p., 179.

    Research output: Contribution to journalJournal articleResearchpeer-review

  3. Published

    Configuration and performance of the ATLAS b-jet triggers in Run 2

    Aad, G., Abbott, B., Abbott, D., Abud, A., Abeling, K., Abhayasinghe, D. K., Abidi, S. H., AbouZeid, O. S. A., Abraham, N., Abramowicz, H., Dam, Mogens, Camplani, Alessandra, Ignazzi, R., Hansen, Jørgen Beck, Hansen, Peter Henrik, Hansen, Jørn Dines, Petersen, Troels Christian, Wiglesworth, Graig, Xella, Stefania & ATLAS Collaboration, A. C., 9 Dec 2021, In: European Physical Journal C. 81, 12, 45 p., 1087.

    Research output: Contribution to journalJournal articleResearchpeer-review

  4. Published

    Fast b-tagging at the high-level trigger of the ATLAS experiment in LHC Run 3

    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, Peter Henrik, Hansen, Jørgen Beck, Hansen, Jørn Dines, Ignazzi, R., Petersen, Troels Christian, Wiglesworth, Graig, Xella, Stefania & ATLAS, A., 10 Nov 2023, In: Journal of Instrumentation. 18, 11, 38 p., P11006.

    Research output: Contribution to journalJournal articleResearchpeer-review

  5. Published

    Measurement of cross-sections for production of a Z boson in association with a flavor-inclusive or doubly b-tagged large-radius jet in proton-proton collisions at √s=13 TeV with the ATLAS experiment

    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, P. H., Hansen, J. D., Hansen, J. B., Ignazzi, R., Wiglesworth, G., Petersen, T. C., Xella, S. & 1 others, ATLAS Collaboration, A. C., 31 Jul 2023, In: Physical Review D. 108, 1, 32 p., 12022.

    Research output: Contribution to journalJournal articleResearchpeer-review

  6. Published

    Measurements of observables sensitive to colour reconnection in t(t)over-bar events with the ATLAS detector at √s=13TeV

    Aad, G., Abbott, B., Abbott, D., Abeling, K., Abidi, S. H., Aboulhosn, J. 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 Collaboration, A. C., 20 Jun 2023, In: European Physical Journal C. 83, 6, 52 p., 518.

    Research output: Contribution to journalJournal articleResearchpeer-review

  7. Published

    Measurement of the Z boson invisible width at √s=13 TeV with the ATLAS detector

    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, Camplani, Alessandra, Hansen, Peter Henrik, Hansen, Jørn Dines, Hansen, Jørgen Beck, Ignazzi, R., Petersen, Troels Christian, Wiglesworth, Graig, Xella, Stefania & ATLAS Collaboration, A. C., 10 May 2024, In: Physics Letters B. 854, 25 p., 138705.

    Research output: Contribution to journalJournal articleResearchpeer-review

  8. Published

    Electron and photon efficiencies in LHC Run 2 with the ATLAS experiment

    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, Camplani, Alessandra, Hansen, Peter Henrik, Hansen, Jørn Dines, Hansen, Jørgen Beck, Ignazzi, R., Petersen, Troels Christian, Wiglesworth, Graig, Xella, Stefania & ATLAS Collaboration, A. C., 14 May 2024, In: Journal of High Energy Physics (Online). 2024, 05, 65 p., 162.

    Research output: Contribution to journalJournal articleResearchpeer-review

  9. Published

    Evidence for the Higgs Boson Decay to a Z Boson and a Photon at the LHC

    Aad, G., Abbott, B., Abeling, K., Abicht, N. J., Abidi, S. H., Aboulhorma, A., Abramowicz, H., Abreu, H., Abulaiti, Y., Dam, Mogens, Camplani, Alessandra, Hansen, Peter Henrik, Hansen, Jørn Dines, Hansen, Jørgen Beck, Ignazzi, R., Petersen, Troels Christian, Wiglesworth, Graig, Xella, Stefania, ATLAS Collaboration, A. C. & The CMS collaboration, T. C. C., 11 Jan 2024, In: Physical Review Letters. 132, 2, 32 p., 021803.

    Research output: Contribution to journalLetterResearchpeer-review

  10. Published

    ATLAS Run 2 searches for electroweak production of supersymmetric particles interpreted within the pMSSM

    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, Camplani, Alessandra, Hansen, Peter Henrik, Hansen, Jørn Dines, Hansen, Jørgen Beck, Ignazzi, R., Petersen, Troels Christian, Wiglesworth, Graig, Xella, Stefania & ATLAS Collaboration, A. C., 9 May 2024, In: Journal of High Energy Physics (Online). 2024, 05, 57 p., 106.

    Research output: Contribution to journalJournal articleResearchpeer-review

  11. Published

    Hardware and firmware developments for the upgrade of the ATLAS Level-1 Central Trigger Processor

    Anders, G., Bertelsen, Henrik, Boisen, A., Childers, T., Dam, Mogens, Ellis, N., Farthouat, P., Ruiz, C. G., Ghibaudi, M., Gorini, B., Haas, S., Kaneda, M., Ohm, C., Silva Oliveira, M., Pauly, T., Poettgen, R., Schmieden, K., Spiwoks, R. & Xella, Stefania, 1 Jan 2014, In: Journal of Instrumentation. 9, C01035.

    Research output: Contribution to journalJournal articleResearchpeer-review

  12. Published

    Search for new phenomena in photon plus jet events collected in proton-proton collisions at root s=8 TeV with the ATLAS detector

    Aad, A., 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., 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., 20 Jan 2014, In: Physics Letters B. 728, p. 562-578

    Research output: Contribution to journalJournal articleResearchpeer-review

  13. Published

    Search for heavy Majorana neutrinos with the ATLAS detector in pp collisions at root s=8 TeV

    Aad, A., 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., 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., 29 Jul 2015, In: Journal of High Energy Physics (Online). 2015, 7, 162.

    Research output: Contribution to journalJournal articleResearchpeer-review

  14. Published

    Search for Low-Mass Dijet Resonances Using Trigger-Level Jets with the ATLAS Detector in pp Collisions at √s=13  TeV

    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., Abu Al-Soud, W., Acharya, B. S., Adachi, S., Adam, L., Adamczyk, L., Adelman, J., Adersberger, M., Adiguzel, A., Adye, T. & 22 others, Affolder, A. A., Afik, Y., Agheorghiesei, C., Aguilar-Saavedra, J. A., Ahmadov, F., Aielli, G., Alonso Diaz, A., Besjes, G., Bajic, M., Hansen, Jørn Dines, Dam, Mogens, Galster, G. A. G. K., Hansen, Jørgen Beck, Monk, J. W., de Almeida Dias, F., hqz214, H., Hansen, Peter Henrik, Petersen, Troels Christian, Stark, S. H., Xella, Stefania, Wiglesworth, Graig & The ATLAS collaboration, T. A. C., 22 Aug 2018, In: Physical Review Letters. 121, 20 p., 081801.

    Research output: Contribution to journalJournal articleResearchpeer-review

  15. Published

    Search for long-lived particles in final states with displaced dimuon vertices in pp collisions at root s=13 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. & 25 others, Afik, Y., Agheorghiesei, C., Aguilar-Saavedra, J. A., Ahmadov, F., Aielli, G., Akatsuka, S., Akesson, T. P. A., Alonso Diaz, A., Besjes, G., Hansen, Peter Henrik, Dam, Mogens, de Almeida Dias, F., Bajic, M., Hansen, Jørgen Beck, Monk, J. W., Petersen, Troels Christian, hqz214, H., Galster, G. A. G. K., Hansen, Jørn Dines, Stark, S. H., Wiglesworth, Graig, Xella, Stefania, Camplani, Alessandra, Ignazzi, R. & ATLAS, A., 3 Jan 2019, In: Physical Review D. 99, 1, 32 p., 012001.

    Research output: Contribution to journalJournal articleResearchpeer-review

  16. 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

  17. Published

    Measurement of fiducial and differential W+W- production cross-sections at root s=13 TeV with the ATLAS detector

    ATLAS, A., 1 Oct 2019, In: European Physical Journal C. 79, 10, 34 p., 884.

    Research output: Contribution to journalJournal articleResearchpeer-review

  18. Published

    Search for large missing transverse momentum in association with one top-quark in proton-proton collisions at root s=13 TeV with the ATLAS detector

    ATLAS, A., 7 May 2019, In: Journal of High Energy Physics. 2019, 5, 50 p., 041.

    Research output: Contribution to journalJournal articleResearchpeer-review

  19. Published

    Measurement of the ratio of cross sections for inclusive isolated-photon production in pp collisions at root s=13 and 8 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. & 21 others, Afik, Y., Agheorghiesei, C., Aguilar-Saavedra, J. A., Ahmadov, F., Aielli, G., Alonso Diaz, A., Besjes, G., Bajic, M., de Almeida Dias, F., Dam, Mogens, hqz214, H., Galster, G. A. G. K., Hansen, Jørgen Beck, Hansen, Jørn Dines, Hansen, Peter Henrik, Monk, J. W., Stark, S. H., Petersen, Troels Christian, Wiglesworth, Graig, Xella, Stefania & The ATLAS collaboration, T. A. C., 12 Apr 2019, In: Journal of High Energy Physics. 2019, 4, 47 p., 093.

    Research output: Contribution to journalJournal articleResearchpeer-review

  20. Published

    Measurement of prompt photon production in root s(NN)=8.16 TeV p Pb collisions with ATLAS

    Aaboud, M., Aad, G., Abbott, B., Abbott, DC., Abdinov, O., Abeloos, B., Abhayasinghe, DK., Abidi, S. H., AbouZeid, O. S. A., Abraham, NL., Bajic, M., Besjes, G-J., Alonso Diaz, A., Camplani, A., Dam, M., de Almeida Dias, F., hqz214, H., Galster, G. A. G. K., Hansen, J. D., Hansen, P. H. & 8 others, Hansen, Jørgen Beck, Ignazzi, R., Monk, J. W., Petersen, Troels Christian, Stark, S. H., Xella, Stefania, Wiglesworth, Graig & ATLAS, A., 10 Sep 2019, In: Physics Letters B. 796, p. 230-252 23 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  21. Published

    Measurement of the t(t)over-barZ and t(t)over-barW cross sections in proton-proton collisions at root s=13 TeV with the ATLAS detector

    ATLAS, A., 29 Apr 2019, In: Physical Review D. 99, 7, 38 p., 072009.

    Research output: Contribution to journalJournal articleResearchpeer-review

  22. Published

    Measurement of the flow harmonic correlations in pp, p plus Pb and low multiplicity Pb plus Pb collisions with the ATLAS detector at the LHC

    ATLAS, A., 1 Feb 2019, In: Nuclear Physics A. 982, p. 479-482

    Research output: Contribution to journalJournal articleResearchpeer-review

  23. Published

    Search for electroweak diboson production in association with a high-mass dijet system in semileptonic final states in pp collisions at root s=13 TeV with the ATLAS detector

    ATLAS, A., 22 Aug 2019, In: Physical Review D. 100, 3, 36 p., 032007.

    Research output: Contribution to journalJournal articleResearchpeer-review

  24. Published

    Study of the hard double-parton scattering contribution to inclusive four-lepton production in pp collisions at root s=8 TeV with the ATLAS detector

    ATLAS, A., 10 Mar 2019, In: Physics Letters B. 790, p. 595-614 20 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  25. Published

    Search for heavy charged long-lived particles in proton-proton collisions at root s=13 TeV using an ionisation measurement with the ATLAS detector

    ATLAS, A., 10 Jan 2019, In: Physics Letters B. 788, p. 96-116 21 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

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