Stefania Xella

Stefania Xella

Associate Professor, Guest Researcher


  1. Published

    Search for dark matter in association with an energetic photon in pp collisions at root s=13 TeV with the ATLAS detector

    Aaboud, M., Aad, G., Abbott, B., Abdinov, O., Abeloos, B., Abhayasinghe, D. K., Abidi, S. H., AbouZeid, O. S. A., Abraham, NL., Abramowicz, H., Abreu, H., Abulaiti, Y., Acharya, B. S., Adachi, S., Adamczyk, L., Adelman, J., Alonso Diaz, A., Bajic, M., hqz214, H., Camplani, A. & 13 others, Dam, Mogens, Galster, G. A. G. K., Hansen, Jørgen Beck, Hansen, Peter Henrik, Hansen, Jørn Dines, de Almeida Dias, F., Ignazzi, R., Monk, J. W., Petersen, Troels Christian, Wiglesworth, Graig, Stark, S. H., Xella, Stefania & The ATLAS collaboration, T. A. C., 25 Feb 2021, In: Journal of High Energy Physics (Online). 2021, 2, 46 p., 226.

    Research output: Contribution to journalJournal articleResearchpeer-review

  2. Published

    Measurement of the jet mass in high transverse momentum Z(-> b(b)over bar)gamma production at root s=13 TeV using the ATLAS detector

    Aaboud, M., Aad, G., Abbott, B., Abdinov, O., Abeloos, B., Abhayasinghe, D. K., Abidi, S. H., AbouZeid, O. S. A., Abraham, NL., Abramowicz, H., Dam, M., Camplani, A., Hansen, J. D., Ignazzi, R., Hansen, J. B., Hansen, P. H., Petersen, T. C., Xella, S., Wiglesworth, G., Monk, J. W. & 7 others, hqz214, H., Galster, G. A. G. K., Stark, S. H., Alonso Diaz, A., Bajic, M., de Almeida Dias, F. & ATLAS Collaboration, A. C., 10 Jan 2021, In: Physics Letters B. 812, 23 p., 135991.

    Research output: Contribution to journalJournal articleResearchpeer-review

  3. Published

    Search for squarks and gluinos in final states with jets and missing transverse momentum using 139 fb-1 of root s=13 TeV pp collision data with the ATLAS detector

    Aaboud, M., Aad, G., Abbott, B., Abdinov, O., Abeloos, B., Abhayasinghe, D. K., 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., Alonso Diaz, A., Bajic, M., de Almeida Dias, F. & 14 others, Camplani, Alessandra, Dam, Mogens, hqz214, H., Galster, G. A. G. K., Hansen, Peter Henrik, Hansen, Jørgen Beck, Hansen, Jørn Dines, Ignazzi, R., Monk, J. W., Petersen, Troels Christian, Stark, S. H., Wiglesworth, Graig, Xella, Stefania & ATLAS Collaboration, A. C., 17 Feb 2021, In: Journal of High Energy Physics (Online). 2021, 2, 61 p., 143.

    Research output: Contribution to journalJournal articleResearchpeer-review

  4. 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

  5. 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

  6. 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

  7. Published

    A search for the dimuon decay of the Standard Model Higgs boson 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, N., Abramowicz, H., Abreu, H., Abulaiti, Y., Acharya, B. S., Achkar, B., Adam, L., Alonso Diaz, A., Bajic, M., Camplani, A., Dam, M., Galster, G. A. G. K. & 11 others, hqz214, H., Hansen, Jørgen Beck, Hansen, Peter Henrik, Hansen, Jørn Dines, Ignazzi, R., Monk, J. W., Petersen, Troels Christian, Stark, S. H., Wiglesworth, Graig, Xella, Stefania & ATLAS Collaboration, A. C., 10 Jan 2021, In: Physics Letters B. 812, 42 p., 135980.

    Research output: Contribution to journalJournal articleResearchpeer-review

  8. Published

    Search for new phenomena with top quark pairs in final states with one lepton, jets, and missing transverse momentum in pp collisions at root s=13 TeV with the ATLAS detector

    Aad, G., Aaboud, M., Abbott, B., Abdinov, O., Abeloos, B., Abhayasinghe, DK., Abidi, S. H., AbouZeid, O. S. A., Abraham, NL., Abramowicz, H., Dam, M., Camplani, A., Bajic, M., Hansen, P. H., Ignazzi, R., Hansen, J. D., Hansen, J. B., Alonso Diaz, A., Monk, J. W., hqz214, H. & 7 others, Petersen, Troels Christian, Galster, G. A. G. K., Wiglesworth, Graig, Stark, S. H., de Almeida Dias, F., Xella, Stefania & ATLAS Collaboration, A. C., 19 Apr 2021, In: Journal of High Energy Physics (Online). 2021, 4, 66 p., 174.

    Research output: Contribution to journalJournal articleResearchpeer-review

  9. Published

    A search for the decays of stopped long-lived particles 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, Peter Henrik, Hansen, Jørn Dines, Petersen, Troels Christian, Wiglesworth, Graig, Xella, Stefania & ATLAS Collaboration, A. C., 23 Jun 2021, In: Journal of High Energy Physics (Online). 2021, 7, 49 p., 173.

    Research output: Contribution to journalJournal articleResearchpeer-review

  10. Published

    Measurement of the t(t)over-bart(t)over-bar production cross section 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., Camplani, Alessandra, Dam, Mogens, Hansen, Jørgen Beck, Hansen, Peter Henrik, Hansen, Jørn Dines, Ignazzi, R., Petersen, Troels Christian, Wiglesworth, Graig, Xella, Stefania & ATLAS Collaboration, A. C., 16 Nov 2021, In: Journal of High Energy Physics (Online). 2021, 11, 23 p., 118.

    Research output: Contribution to journalJournal articleResearchpeer-review

  11. Published

    Sensitivity of the SHiP experiment to dark photons decaying to a pair of charged particles

    Ahdida, C., Akmete, A., Albanese, R., Alexandrov, A., Anokhina, A., Aoki, S., Arduini, G., Atkin, E., Azorskiy, N., Back, J. J., Bagulya, A., Baaltasar Dos Santos, F., Baranov, A., Bardou, F., Barker, G. J., Battistin, M., Bauche, J., Bay, A., Bayliss, M. B., Bencivenni, G. & 31 others, Berdnikov, A. Y., Berdnikov, Y. A., Bertani, M., Betancourt, C., Bezshyiko, Bezshyyko, O., Bick, D., Bieschke, S., Blanco, A., Boehm, J., Bogomilov, M., Boiarska, Bondarenko, K., Bonivento, W. M., Borburgh, J., Boyarsky, A., Brenner, R., Breton, D., Buescher, M., Buonaura, A., Buontempo, S., Cadeddu, S., Calcaterra, A., Calviani, M., Campanelli, M., Casolino, M., Lee, K. S., Ruchayskiy, Oleg, Tastet, J. L., Xella, Stefania & SHiP Collaboration, S. C., May 2021, In: European Physical Journal C. 81, 5, 17 p., 451.

    Research output: Contribution to journalJournal articleResearchpeer-review

  12. Published

    Exclusive dimuon production in ultraperipheral Pb plus Pb collisions at root S-NN=5.02 TeV with ATLAS

    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, Peter Henrik, Hansen, Jørgen Beck, Ignazzi, R., Petersen, Troels Christian, Wiglesworth, Graig, Xella, Stefania & ATLAS Collaboration, A. C., 19 Aug 2021, In: Physical Review C. 104, 2, 32 p., 024906.

    Research output: Contribution to journalJournal articleResearchpeer-review

  13. Published

    Search for new phenomena in pp collisions in final states with tau leptons, b-jets, and missing transverse momentum with the ATLAS detector

    Aad, G., Abbott, B., Abbott, D., Abud, A., Abeling, K., Abhayasinghe, D., Abidi, S. H., AbouZeid, O. S. A., Abramowicz, H., Abreu, H., Camplani, Alessandra, Dam, Mogens, Hansen, Jørgen Beck, Hansen, Jørn Dines, Hansen, Peter Henrik, Ignazzi, R., Petersen, Troels Christian, Wiglesworth, Graig, Xella, Stefania & ATLAS Collaboration, A. C., 21 Dec 2021, In: Physical Review D. 104, 11, 35 p., 112005.

    Research output: Contribution to journalJournal articleResearchpeer-review

  14. Published

    Search for a heavy Higgs boson decaying into a Z boson and another heavy Higgs boson in the llbb and llWW final states in pp collisions at root s=13 TeV with the ATLAS detector

    ATLAS Collaboration, A. C., 7 May 2021, In: European Physical Journal C. 81, 5, 36 p., 396.

    Research output: Contribution to journalJournal articleResearchpeer-review

  15. Published

    Measurement of the CP-violating phase φs in Bs(0) -> J/ψ φ decays in ATLAS at 13 TeV

    Aad, G., Abbott, B., Abbott, DC., Abud, AA., Abeling, K., Abhayasinghe, D. K., Abidi, S. H., AbouZeid, O. S. A., Abraham, NL., Abramowicz, H., Camplani, A., Galster, G. A. G. K., Dam, M., Hansen, J. B., Hansen, J. D., Hansen, P. H., Ignazzi, R., Monk, J. W., Petersen, T. C., hqz214, H. & 4 others, Stark, S. H., Xella, Stefania, Wiglesworth, Graig & ATLAS Collaboration, A. C., 21 Apr 2021, In: European Physical Journal C. 81, 4, 36 p., 342.

    Research output: Contribution to journalJournal articleResearchpeer-review

  16. Published

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

    Aaboud, M., Aad, G., Abbott, B., Abdinov, O., Abeloos, B., Abhayasinghe, D. K., Abidi, S. H., AbouZeid, O. S. A., Abraham, NL., Abramowicz, H., Alonso Diaz, A., Bajic, M., Camplani, A., Dam, M., Ignazzi, R., Hansen, J. D., Hansen, J. B., Hansen, P. H., Petersen, T. C., Xella, S. & 7 others, Wiglesworth, Graig, Galster, G. A. G. K., Stark, S. H., hqz214, H., Monk, J. W., de Almeida Dias, F. & ATLAS Collaboration, A. C., 5 Mar 2021, In: European Physical Journal C. 81, 3, 30 p., 218.

    Research output: Contribution to journalJournal articleResearchpeer-review

  17. Published

    Measurement of hadronic event shapes in high-p(T) multijet final states at root s=13 TeV with the ATLAS detector

    Aaboud, M., Aad, G., Abbott, B., Abdinov, O., Abeloos, B., Abhayasinghe, D. K., Abidi, S. H., AbouZeid, O. S. A., Abraham, NL., Abramowicz, H., Abreu, H., Abulaiti, Y., Acharya, B. S., Adachi, S., Adamczyk, L., Alonso Diaz, A., Bajic, M., Dam, M., Camplani, A., Hansen, J. D. & 12 others, Hansen, Peter Henrik, Hansen, Jørgen Beck, Galster, G. A. G. K., Ignazzi, R., Monk, J. W., hqz214, H., Petersen, Troels Christian, Wiglesworth, Graig, Xella, Stefania, Stark, S. H., de Almeida Dias, F. & ATLAS Collaboration, A. C., 28 Jan 2021, In: Journal of High Energy Physics (Online). 2021, 1, 44 p., 188.

    Research output: Contribution to journalJournal articleResearchpeer-review

  18. Published

    Search for charginos and neutralinos in final states with two boosted hadronically decaying bosons and missing transverse momentum in pp collisions at root s=13 TeV with the ATLAS detector

    Abbott, B., Aad, G., Abbott, D., Abud, A., Abeling, K., Abhayasinghe, D., 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., 27 Dec 2021, In: Physical Review D. 104, 11, 42 p., 112010.

    Research output: Contribution to journalJournal articleResearchpeer-review

  19. Published

    Search for charged Higgs bosons decaying into a top quark and a bottom quark 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, Hansen, Jørn Dines, Hansen, Peter Henrik, Hansen, Jørgen Beck, Ignazzi, R., Petersen, Troels Christian, Wiglesworth, Graig, Xella, Stefania & ATLAS Collaboration, A. C., 24 Jun 2021, In: Journal of High Energy Physics (Online). 2021, 6, 47 p., 145.

    Research output: Contribution to journalJournal articleResearchpeer-review

  20. Published

    Measurement of the production cross section of pairs of isolated photons in pp collisions at 13 TeV with the ATLAS detector

    Aad, G., Abbott, B., Abbott, D., Abud, A., Abeling, K., Abhayasinghe, D. K., Abidi, S. H., Abreu, H., Abulaiti, Y., Camplani, Alessandra, Dam, Mogens, Hansen, Jørn Dines, Hansen, Peter Henrik, Hansen, Jørgen Beck, Ignazzi, R., Petersen, Troels Christian, Wiglesworth, Graig, Xella, Stefania & ATLAS Collaboration, A. C., 22 Nov 2021, In: Journal of High Energy Physics (Online). 2021, 11, 53 p., 169.

    Research output: Contribution to journalJournal articleResearchpeer-review

  21. Published

    Search for supersymmetry in events with four or more charged leptons in 139 fb(-1) of root s=13 TeV pp collisions 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, Hansen, Jørgen Beck, Ignazzi, R., Hansen, Peter Henrik, Hansen, Jørn Dines, Petersen, Troels Christian, Wiglesworth, Graig, Xella, Stefania & ATLAS Collaboration, A. C., 22 Jul 2021, In: Journal of High Energy Physics (Online). 2021, 7, 57 p., 167.

    Research output: Contribution to journalJournal articleResearchpeer-review

  22. Published

    Search for bottom-squark pair production in pp collision events at root s=13 TeV with hadronically decaying tau-leptons, b-jets, and missing transverse momentum using 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, Hansen, Peter Henrik, Hansen, Jørn Dines, Hansen, Jørgen Beck, Ignazzi, R., Petersen, Troels Christian, Wiglesworth, Graig, Xella, Stefania & ATLAS Collaboration, A. C., 31 Aug 2021, In: Physical Review D. 104, 3, 31 p., 032014.

    Research output: Contribution to journalJournal articleResearchpeer-review

  23. Published

    Measurement of b-quark fragmentation properties in jets using the decay B-+/- -> J/psi K-+/- in pp collisions at root s=13 TeV with the ATLAS detector

    Aad, G., Abbott, B., Abbott, D., Abud, A., Abeling, K., Abhayasinghe, D., Abidi, S. H., AbouZeid, O. S. A., Abramowicz, H., Abreu, 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., 20 Dec 2021, In: Journal of High Energy Physics (Online). 2021, 12, 46 p., 131.

    Research output: Contribution to journalJournal articleResearchpeer-review

  24. Published

    The ATLAS Fast TracKer system

    Aad, G., Abbott, B., Abbott, D., Abud, A., Abeling, K., Abhayasinghe, D., Abidi, S. H., Abraham, N., Abreu, H., Dam, Mogens, Camplani, Alessandra, Hansen, Jørn Dines, Hansen, Peter Henrik, Hansen, Jørgen Beck, Ignazzi, R., Petersen, Troels Christian, Wiglesworth, Graig, Xella, Stefania & ATLAS Collaboration, A. C., 12 Jan 2021, In: Journal of Instrumentation. 16, 64 p., P07006.

    Research output: Contribution to journalJournal articleResearchpeer-review

  25. Published

    Measurements of W+W- + >= 1 jet production cross-sections in pp collisions at root s=13 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, N. L., Abramowicz, H., Abreu, H., Abulaiti, Y., Camplani, A., Dam, M., Hansen, P. H., Hansen, J. D., Hansen, J. B., Xella, S., Petersen, T. C., Ignazzi, R. & 2 others, Wiglesworth, Graig & ATLAS Collaboration, A. C., 1 Jun 2021, In: Journal of High Energy Physics (Online). 2021, 6, 59 p., 003.

    Research output: Contribution to journalJournal articleResearchpeer-review

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