Stefania Xella

Stefania Xella

Associate Professor, Guest Researcher


  1. Published

    Search for chargino-neutralino production with mass splittings near the electroweak scale in three-lepton final states in root s=13 TeV pp collisions with the ATLAS detector

    Aad, G., Abbott, B., Abbott, DC., Abud, AA., Abeling, K., Abhayasinghe, DK., Abidi, S. H., AbouZeid, O. S. A., Abraham, NL., Abramowicz, H., Camplani, A., Dam, M., Galster, G. A. G. K., Hansen, P. H., Hansen, J. D., Hansen, J. B., Ignazzi, R., Monk, J. W., Petersen, T. C., Wiglesworth, G. & 3 others, Xella, Stefania, Stark, S. H. & ATLAS Collaboration, A. C., 7 Apr 2020, In: Physical Review D. 101, 7, 32 p., 072001.

    Research output: Contribution to journalJournal articleResearchpeer-review

  2. Published

    Search for chargino-neutralino production using recursive jigsaw reconstruction in final states with two or three charged leptons in proton-proton 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. & 19 others, Afik, Y., Agheorghiesei, C., Aguilar-Saavedra, J. A., Ahmadov, F., Alonso Diaz, A., Besjes, G., Bajic, M., Dam, Mogens, de Almeida Dias, F., Galster, G. A. G. K., Hansen, Jørn Dines, Hansen, Jørgen Beck, Hansen, Peter Henrik, Monk, J. W., Thiele, F. A. J., Petersen, Troels Christian, Stark, S. H., Wiglesworth, Graig & Xella, Stefania, 19 Nov 2018, In: Physical Review D. 98, 9, 42 p., 092012.

    Research output: Contribution to journalJournal articleResearchpeer-review

  3. Published

    Search for chargino-neutralino pair production in final states with three leptons and missing transverse momentum in 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., 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., 2021, In: European Physical Journal C. 81, 12, 55 p., 1118.

    Research output: Contribution to journalJournal articleResearchpeer-review

  4. Published

    Search for chargino and neutralino production in final states with a Higgs boson and missing transverse momentum at root s=13 TeV with the ATLAS detector

    ATLAS, A., 30 Jul 2019, In: Physical Review D. 100, 1, 37 p., 012006.

    Research output: Contribution to journalJournal articleResearchpeer-review

  5. 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

  6. Published

    Search for charged Higgs bosons through the violation of lepton universality in t(t)over-bar events using pp collision data at root s=7 TeV with the ATLAS experiment

    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, Jørgensen, M. D., Heisterkamp, S. J. F., Boelaert, N. M. P., Klinkby, E. B., Løvschall-Jensen, A. E., Mehlhase, S., Nilsson, B. S., Petersen, Troels Christian & Xella, Stefania, 1 Mar 2013, In: Journal of High Energy Physics (Online). 2013, 3, 076.

    Research output: Contribution to journalJournal articleResearchpeer-review

  7. Published

    Search for charged Higgs bosons produced in association with a top quark and decaying via H-+/- -> tau nu using pp collision data recorded at root s=13 TeV by the ATLAS detector

    Aaboud, M., Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Abeloos, B., Aben, R., AbouZeid, O. S., Abraham, NL., Abramowicz, H., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Hansen, P. H., Petersen, T. C., Thomsen, L. A., 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., 10 Aug 2016, In: Physics Letters B. 759, p. 555-574

    Research output: Contribution to journalJournal articleResearchpeer-review

  8. Published

    Search for charged Higgs bosons in the H-+/- -> tb decay channel in pp collisions at root s=8 TeV using the ATLAS detector

    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., 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., 17 Mar 2016, In: Journal of High Energy Physics (Online). 2016, 3, 127.

    Research output: Contribution to journalJournal articleResearchpeer-review

  9. Published

    Search for charged Higgs bosons decaying via H-+/- -> tau(+/-)nu(tau) in the tau plus jets and tau plus lepton final states with 36 fb(-1) of pp collision data recorded at root s=13 TeV with the ATLAS experiment

    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. & 16 others, Afik, Y., Alonso Diaz, A., Bajic, M., Besjes, G., Dam, Mogens, de Almeida Dias, F., Galster, G. A. G. K., Hansen, Jørn Dines, Hansen, Peter Henrik, Hansen, Jørgen Beck, Monk, J. W., Petersen, Troels Christian, Stark, S. H., Thiele, F. A. J., Wiglesworth, Graig & Xella, Stefania, 25 Sep 2018, In: Journal of High Energy Physics. 2018, 9, 48 p., 139.

    Research output: Contribution to journalJournal articleResearchpeer-review

  10. Published

    Search for charged Higgs bosons decaying via H-+/- -> tau(+/-) nu in fully hadronic final states using pp collision data at root 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., 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., 17 Mar 2015, In: Journal of High Energy Physics (Online). 2015, 3, 088.

    Research output: Contribution to journalJournal articleResearchpeer-review

  11. Published

    Search for charged Higgs bosons decaying via H-+/- -> tau nu in t(t)over-bar events using pp collision data at root s=7 TeV with the ATLAS detector

    Aad, G., Abbott, B., Dam, Mogens, Hansen, Jørgen Beck, Hansen, Peter Henrik, Hansen, John Renner, 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 Jun 2012, In: Journal of High Energy Physics (Online). 2012, 6, p. 039

    Research output: Contribution to journalJournal articleResearchpeer-review

  12. Published

    Search for charged Higgs bosons decaying into top and bottom quarks at root s=13TeV 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., Besjes, G., Alonso Diaz, A., Bajic, M., de Almeida Dias, F., Dam, Mogens, Galster, G. A. G. K., Hansen, Peter Henrik, Hansen, Jørgen Beck, Hansen, Jørn Dines, Monk, J. W., Petersen, Troels Christian, Thiele, F. A. J., Stark, S. H., Wiglesworth, Graig & Xella, Stefania, 13 Nov 2018, In: The Journal of High Energy Physics. 2018, 11, 55 p., 085.

    Research output: Contribution to journalJournal articleResearchpeer-review

  13. 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

  14. 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

  15. Published

    Search for bottom squark pair production in proton-proton collisions at root s=13 TeV with the ATLAS detector

    Aaboud, M., Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Abeloos, B., Aben, R., AbouZeid, O. S., Abraham, N. L., Abramowicz, H., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Hansen, P. H., Petersen, T. C., Thomsen, L. A., 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., 6 Oct 2016, In: The European Physical Journal C: Particles and Fields. 76, 10, 547.

    Research output: Contribution to journalJournal articleResearchpeer-review

  16. Published

    Search for boosted diphoton resonances in the 10 to 70 GeV mass range using 138 fb-1 of 13 TeV pp collisions 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, Camplani, Alessandra, Hansen, Jørgen Beck, Hansen, Jørn Dines, Hansen, Peter Henrik, Ignazzi, R., Wiglesworth, Graig, Petersen, Troels Christian, Xella, Stefania & ATLAS, A., 20 Jul 2023, In: Journal of High Energy Physics (Online). 2023, 07, 42 p., 155.

    Research output: Contribution to journalJournal articleResearchpeer-review

  17. Published

    Search for associated production of a Z boson with an invisibly decaying Higgs boson or dark matter candidates root s=13 TeV with the ATLAS detector

    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, Ignazzi, R., Petersen, Troels Christian, Wiglesworth, Graig, Xella, Stefania & ATLAS Collaboration, A. C., 10 Jun 2022, In: Physics Letters B. 829, 25 p., 137066.

    Research output: Contribution to journalJournal articleResearchpeer-review

  18. Published

    Search for anomaly-mediated supersymmetry breaking with the ATLAS detector based on a disappearing-track signature in pp collisions at sqrt(s) = 7 TeV

    Aad, G., Dam, Mogens, Boelaert, N. M. P., Hansen, Jørgen Beck, Hansen, Peter Henrik, Hansen, John Renner, Hansen, Jørn Dines, Jørgensen, M. D., Heisterkamp, S. J. F., Mehlhase, S., Klinkby, E. B., Nilsson, B. S., Petersen, Troels Christian, Løvschall-Jensen, A. E. & Xella, Stefania, 7 May 2012, In: European Physical Journal C. 72, 4, p. 1993

    Research output: Contribution to journalJournal articleResearchpeer-review

  19. Published

    Search for anomalous production of prompt same-sign lepton pairs and pair-produced doubly charged Higgs bosons with root s=8 TeV pp collisions using 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., 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., 9 Mar 2015, In: Journal of High Energy Physics (Online). 2015, 3, 041.

    Research output: Contribution to journalJournal articleResearchpeer-review

  20. Published

    Search for anomalous production of prompt like-sign muon pairs and constraints on physics beyond the standard model with the ATLAS detector

    Aad, G., Dam, Mogens, Boelaert, N. M. P., Hansen, John Renner, Hansen, Jørgen Beck, Hansen, Peter Henrik, Hansen, Jørn Dines, Heisterkamp, S. J. F., Jørgensen, M. D., Mehlhase, S., Klinkby, E. B., Nilsson, B. S., Petersen, Troels Christian & Xella, Stefania, 17 Feb 2012, In: Physical Review D (Particles, Fields, Gravitation and Cosmology). 85, 3, p. 032004

    Research output: Contribution to journalJournal articleResearchpeer-review

  21. Published

    Search for anomalous electroweak production of WW/WZ in association with a high-mass dijet system in pp collisions at root S=8 TeV with the ATLAS detector

    Aaboud, M., Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Abeloos, B., Aben, R., 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., Affolder, A. A. & 16 others, Dam, Mogens, Hansen, Jørn Dines, Hansen, Jørgen Beck, Xella, Stefania, Hansen, Peter Henrik, Petersen, Troels Christian, Løvschall-Jensen, A. E., Alonso Diaz, A., 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., 8 Feb 2017, In: Physical Review D. 95, 3, 032001.

    Research output: Contribution to journalJournal articleResearchpeer-review

  22. Published

    Search for anomalous couplings in the Wtb vertex from the measurement of double differential angular decay rates of single top quarks produced in the t-channel 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., 5 Apr 2016, In: Journal of High Energy Physics. 2016, 4, 023.

    Research output: Contribution to journalJournal articleResearchpeer-review

  23. Published

    Search for an invisibly decaying Higgs boson or dark matter candidates produced in association with a Z boson in pp collisions at root s=13 TeV with the ATLAS detector

    Aaboud, M., Aad, G., Abbott, B., Abdinov, O., Abeloos, B., Abidi, S. H., Abouzeid, O. S. A., Abraham, NL., Abramowicz, H., Abreu, H., Abreu, R., Abulaiti, Y., Acharya, B. S., Adachi, S., Adamczyk, L., Adelman, J., Adersberger, M., Adye, T., Affolder, A. A., Dam, M. & 14 others, Hansen, Peter Henrik, Hansen, Jørgen Beck, Besjes, G., Hansen, Jørn Dines, Alonso Diaz, A., de Almeida Dias, F., Galster, G. A. G. K., Wiglesworth, Graig, Thiele, F. A. J., Monk, J. W., Bajic, M., Petersen, Troels Christian, Stark, S. H. & Xella, Stefania, 10 Jan 2018, In: Physics Letters B. 776, p. 318-337 20 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  24. Published

    Search for an excess of events with an identical flavour lepton pair and significant missing transverse momentum in vs = 7 TeV proton-proton collisions with the ATLAS detector

    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 Jul 2011, In: European Physical Journal C. 71, 7, p. 1647 18 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  25. Published

    Search for an axion-like particle with forward proton scattering in association with photon pairs at ATLAS

    Aad, G., Abbott, B., Abeling, K., Abicht, N. J., Abidi, S. H., Aboulhorma, A., Abramowicz, H., Abreu, H., Abulaiti, Y., Abusleme Hoffman, A. C., Acharya, B. S., Dam, M., Camplani, A., Hansen, J. D., Hansen, J. B., Hansen, P. H., Ignazzi, R., Petersen, T. C., Wiglesworth, G., Xella, S. & 1 others, ATLAS Collaboration, A. C., 31 Jul 2023, In: Journal of High Energy Physics. 2023, 07, 38 p., 234.

    Research output: Contribution to journalJournal articleResearchpeer-review

ID: 7582