Stefania Xella

Stefania Xella

Associate Professor, Guest Researcher


  1. Published

    Search for direct third-generation squark pair production in final states with missing transverse momentum and two b-jets in root s=8 TeV pp collisions with the ATLAS detector

    Aad, G., Abajyan, T., Abbott, B., Abdallah, J., Khalek, A. S., Dam, Mogens, Hansen, Jørgen Beck, Hansen, Jørn Dines, Hansen, John Renner, Hansen, Peter Henrik, Boelaert, N. M. P., Jørgensen, M. D., Heisterkamp, S. J. F., Klinkby, E. B., Nilsson, B. S., Løvschall-Jensen, A. E., Mehlhase, S., Petersen, Troels Christian & Xella, Stefania, 29 Oct 2013, In: Journal of High Energy Physics (Online). 2013, 10, 189.

    Research output: Contribution to journalJournal articleResearchpeer-review

  2. Published

    Search for direct top squark pair production in events with a Higgs or Z boson, and missing transverse momentum in root s=13 TeV pp collisions with the ATLAS detector

    Aaboud, M., Aad, G., Abbott, B., Abdinov, O., Abeloos, B., AbouZeid, O. S., Abraham, NL., Abramowicz, H., Abreu, H., Abreu, R., Abulaiti, Y., Acharya, B. S., Adachi, S., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Hansen, P. H., Petersen, T. C., Løvschall-Jensen, A. E. & 14 others, 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., Bajic, M., Barr, J., Arnold, H., Zhu, H. & Zwalinski, L., 1 Aug 2017, In: Journal of High Energy Physics. 2017, 8, 006.

    Research output: Contribution to journalJournal articleResearchpeer-review

  3. Published

    Search for direct top squark pair production in events with a Z boson, b-jets and missing transverse momentum in √s = 8 TeV pp collisions 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., Petersen, T. C., Hansen, P. H., Xella, S., Thomsen, L. A., Pedersen, L. E., Galster, G. A. G. K., Wiglesworth, G. & 6 others, Monk, J. W., Løvschall-Jensen, A. E., Alonso Diaz, A., Pingel, A. M., Jørgensen, M. D. & Mehlhase, S., 3 Jun 2014, In: The European Physical Journal C: Particles and Fields. 74, 2883.

    Research output: Contribution to journalJournal articleResearchpeer-review

  4. Published

    Search for direct top squark pair production in final states with two leptons in root s=13 TeV pp collisions with the ATLAS detector

    Aaboud, M., Aad, G., Abbott, B., Abdinov, O., Abeloos, B., Abidi, S. H., AbouZeid, O. S., Abraham, NL., Abramowicz, H., Abreu, H., Abreu, R., Abulaiti, Y., Acharya, B. S., Adachi, S., Adamczyk, L., Adelman, J. P., Adersberger, M., Adye, T., Affolder, A. A., Dam, M. & 16 others, 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., Bajic, M., Thiele, F. A. J. & de Almeida Dias, F., 21 Dec 2017, In: European Physical Journal C. 77, 12, 898.

    Research output: Contribution to journalJournal articleResearchpeer-review

  5. Published

    Search for direct top squark pair production in final states with two tau leptons in pp collisions at root s=8 TeV 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., Aielli, G., Ahlen, S. P., Adomeit, S., Adams, D. L., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Hansen, P. H. & 9 others, Petersen, Troels Christian, Thomsen, L. A., Pingel, A. M., Løvschall-Jensen, A. E., Alonso Diaz, A., Monk, J. W., Pedersen, L. E., Wiglesworth, Graig & Galster, G. A. G. K., 16 Feb 2016, In: European Physical Journal C. 76, 2, 81.

    Research output: Contribution to journalJournal articleResearchpeer-review

  6. Published

    Search for direct top-squark pair production in final states with two leptons in pp collisions at √s= 8TeV with the ATLAS detector

    Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Aben, R., Abi, B., Abolins, M., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Hansen, P. H., Petersen, T. C., Galster, G. A. G. K., Thomsen, L. A., Mehlhase, S., Jørgensen, M. D., Pingel, A. M., Løvschall-Jensen, A. E. & 4 others, Alonso Diaz, A., Monk, J. W., Pedersen, L. E. & Wiglesworth, Graig, 19 Mar 2014, In: Journal of High Energy Physics (Online). 2014, 124, 66 p., 1406.

    Research output: Contribution to journalJournal articleResearchpeer-review

  7. Published

    Search for displaced muonic lepton jets from light Higgs boson decay in proton-proton collisions at root s=7 TeV 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., Mehlhase, S., Løvschall-Jensen, A. E., Nilsson, B. S., Petersen, Troels Christian & Xella, Stefania, 10 Apr 2013, In: Physics Letters B. 721, 1-3, p. 32-50

    Research output: Contribution to journalJournal articleResearchpeer-review

  8. Published

    Search for displaced photons produced in exotic decays of the Higgs boson using 13 TeV pp collisions with the ATLAS detector

    Aad, G., Abbott, B., Abbott, D., Abidi, S. H., Aboulhorma, A., Abramowicz, H., Abreu, H., Abulaiti, Y., Abusleme Hoffman, A. C., Acharya, B. S., Dam, Mogens, Camplani, Alessandra, Hansen, Jørgen Beck, Hansen, Peter Henrik, Hansen, Jørn Dines, Ignazzi, R., Petersen, Troels Christian, Wiglesworth, Graig, Xella, Stefania & ATLAS Collaboration, A. C., 21 Aug 2023, In: Physical Review D. 108, 3, 33 p., 032016.

    Research output: Contribution to journalJournal articleResearchpeer-review

  9. Published

    Search for displaced vertices arising from decays of new heavy particles in 7 TeV pp collisions at ATLAS

    Aad, G., 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., Mehlhase, S., Nilsson, B. S., Petersen, Troels Christian & Xella, Stefania, 7 Feb 2012, In: Physics Letters B. 707, 5, p. 478-496 18 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  10. Published

    Search for displaced vertices of oppositely charged leptons from decays of long-lived particles 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., Alonso Diaz, A., Bajic, M., hqz214, H., Camplani, A., Dam, M., Hansen, P. H., Hansen, J. B., Hansen, J. D. & 8 others, Galster, G. A. G. K., Monk, J. W., Ignazzi, R., Petersen, Troels Christian, Stark, S. H., Wiglesworth, Graig, Xella, Stefania & ATLAS Collaboration, A. C., 10 Feb 2020, In: Physics Letters B. 801, 21 p., 135114.

    Research output: Contribution to journalJournal articleResearchpeer-review

  11. Published

    Search for doubly and singly charged Higgs bosons decaying into vector bosons in multi-lepton final states with the ATLAS detector using proton-proton collisions at root s=13 TeV

    Aaboud, M., Aad, G., Abbott, B., Abdinov, O., Abeloos, B., Abhayasinghe, D. K., Abidi, S. H., AbouZeid, O. S. A., Abraham, N., Abramowicz, H., 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., 24 Jun 2021, In: Journal of High Energy Physics (Online). 2021, 6, 54 p., 146.

    Research output: Contribution to journalJournal articleResearchpeer-review

  12. Published

    Search for doubly charged Higgs boson production in multi-lepton final states using 139 fb-1 of proton–proton collisions at √s= 13 TeV with the ATLAS detector

    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. D., Hansen, J. B., Hansen, P. H., Ignazzi, R., Petersen, T. C., Wiglesworth, G., Xella, S. & 1 others, ATLAS Collaboration, A. C., 12 Jul 2023, In: European Physical Journal C. 83, 7, 32 p., 605.

    Research output: Contribution to journalJournal articleResearchpeer-review

  13. Published

    Search for doubly charged Higgs boson production in multi-lepton final states with the ATLAS detector using proton-proton collisions at root s=13TeV

    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., Afik, Y. & 20 others, Agatonovic-Jovin, T., Agheorghiesei, C., Aguilar-Saavedra, J. A., Ahlen, S. P., Ahmadov, F., Dam, Mogens, Besjes, G., Galster, G. A. G. K., Alonso Diaz, A., Stark, S. H., Bajic, M., Monk, J. W., Hansen, Jørn Dines, de Almeida Dias, F., Wiglesworth, Graig, Xella, Stefania, Thiele, F. A. J., Hansen, Jørgen Beck, Petersen, Troels Christian & Hansen, Peter Henrik, 10 Mar 2018, In: European Physical Journal C. 78, 3, 34 p., 199.

    Research output: Contribution to journalJournal articleResearchpeer-review

  14. Published

    Search for doubly charged scalar bosons decaying into same-sign W boson pairs with the ATLAS detector

    ATLAS, A., 23 Jan 2019, In: European Physical Journal C. 79, 1, 30 p., 58.

    Research output: Contribution to journalJournal articleResearchpeer-review

  15. Published

    Search for down-type fourth generation quarks with the ATLAS detector in events with one lepton and hadronically decaying W bosons

    Aad, G., Dam, Mogens, Boelaert, N. M. P., Hansen, Jørgen Beck, Hansen, John Renner, Hansen, Jørn Dines, Hansen, Peter Henrik, Heisterkamp, S. J. F., Jørgensen, M. D., Mehlhase, S., Klinkby, E. B., Nilsson, B. S., Petersen, Troels Christian, Løvschall-Jensen, A. E. & Xella, Stefania, 20 Jul 2012, In: Physical Review Letters. 109, 3, p. 032001 19 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  16. 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

  17. Published

    Search for electroweak production of charginos and sleptons decaying into final states with two leptons and missing transverse momentum in root s=13 TeV pp collisions using 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., Abreu, H., Abulaiti, Y., Acharya, B. S., Alonso Diaz, A., hqz214, H., Camplani, A., Dam, M., Galster, G. A. G. K., Hansen, P. H., Hansen, J. B. & 9 others, Hansen, Jørn Dines, Ignazzi, R., Monk, J. W., Petersen, Troels Christian, Stark, S. H., Wiglesworth, Graig, Xella, Stefania, Bajic, M. & ATLAS Collaboration, A. C., 14 Feb 2020, In: European Physical Journal C. 80, 2, 33 p., 123.

    Research output: Contribution to journalJournal articleResearchpeer-review

  18. Published

    Search for electroweak production of supersymmetric particles in final states with two or three leptons 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., Abulaiti, Y., Acharya, B. S., Adachi, S., Adamczyk, L., Adelman, J., Adersberger, M., Adye, T., Affolder, A. A., Afik, Y., Agatonovic-Jovin, T. & 19 others, Agheorghiesei, C., Aguilar-Saavedra, J. A., Ahmadov, F., Aielli, G., Alonso Diaz, A., Bajic, M., Besjes, G., de Almeida Dias, F., Dam, Mogens, Galster, G. A. G. K., Hansen, Jørn Dines, Hansen, Jørgen Beck, Hansen, Peter Henrik, Monk, J. W., Petersen, Troels Christian, Stark, S. H., Thiele, F. A. J., Wiglesworth, Graig & Xella, Stefania, 5 Dec 2018, In: European Physical Journal C. 78, 12, 36 p., 995.

    Research output: Contribution to journalJournal articleResearchpeer-review

  19. Published

    Search for electroweak production of supersymmetric particles in final states with two τ-leptons in √s= 13 TeV pp collisions with the ATLAS detector

    Aad, G., Abbott, B., Abeling, K., Abicht, N. J., Abidi, S. H., Abramowicz, H., Abreu, H., Abulaiti, Y., Acharya, B. S., Dam, Mogens, Hansen, Peter Henrik, Hansen, Jørn Dines, Camplani, Alessandra, Hansen, Jørgen Beck, Ignazzi, R., Petersen, Troels Christian, Wiglesworth, Graig, Xella, Stefania & ATLAS Collaboration, A. C., 13 May 2024, In: Journal of High Energy Physics (Online). 2024, 05, 65 p., 150.

    Research output: Contribution to journalJournal articleResearchpeer-review

  20. Published

    Search for electroweak production of supersymmetric states in scenarios with compressed mass spectra 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., Abulaiti, Y., Acharya, B. S., Adachi, S., Adamczyk, L., Adelman, J., Adersberger, M., Adye, T., Affolder, A. A., Afik, Y., Agheorghiesei, C. & 19 others, Aguilar-Saavedra, J. A., Ahlen, S. P., Ahmadov, F., Aielli, G., Dam, Mogens, Hansen, Jørn Dines, Hansen, Jørgen Beck, Xella, Stefania, Hansen, Peter Henrik, Petersen, Troels Christian, Alonso Diaz, A., Monk, J. W., Wiglesworth, Graig, Galster, G. A. G. K., Stark, S. H., Besjes, G., Bajic, M., Thiele, F. A. J. & de Almeida Dias, F., 27 Mar 2018, In: Physical Review D. 97, 5, 35 p., 052010.

    Research output: Contribution to journalJournal articleResearchpeer-review

  21. 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

  22. Published

    Search for events with large missing transverse momentum, jets, and at least two tau leptons in 7 TeV proton-proton collision data with the ATLAS detector ATLAS Collaboration

    Aad, G., Abbott, B., 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., Mehlhase, S., Nilsson, B. S., Petersen, Troels Christian, Løvschall-Jensen, A. E. & Xella, Stefania, 14 Aug 2012, In: Physics Letters B. 714, 2-5, p. 180-196 16 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  23. Published

    Search for excited electrons and muons in root s=8 TeV proton-proton 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, 6 Sep 2013, In: New Journal of Physics. 15, 093011.

    Research output: Contribution to journalJournal articleResearchpeer-review

  24. Published

    Search for excited electrons singly produced in proton-proton collisions at root s=13 TeV with the ATLAS experiment at the LHC

    ATLAS, A., 3 Oct 2019, In: European Physical Journal C. 79, 9, 30 p., 803.

    Research output: Contribution to journalJournal articleResearchpeer-review

  25. Published

    Search for excited leptons in proton-proton collisions at vs=7¿¿TeV with the ATLAS detector

    Aad, G., Dam, Mogens, Boelaert, N. M. P., Hansen, Jørgen Beck, Hansen, Peter Henrik, Hansen, John Renner, Hansen, Jørn Dines, Heisterkamp, S. J. F., Jørgensen, M. D., Klinkby, E. B., Mehlhase, S., Nilsson, B. S., Petersen, Troels Christian, Løvschall-Jensen, A. E. & Xella, Stefania, 27 Apr 2012, In: Physical Review D (Particles, Fields, Gravitation and Cosmology). 85, 7, p. 072003

    Research output: Contribution to journalJournal articleResearchpeer-review

ID: 7582