Stefania Xella

Stefania Xella

Associate Professor, Guest Researcher


  1. Published

    Search for Higgs boson decays into a pair of pseudoscalar particles in the bbμμ final state with the ATLAS detector in pp collisions at √s ​=13  TeV

    Aad, G., Abbott, B., Abbott, DC., Abud, AA., Abeling, K., Abhayasinghe, D. K., Abidi, S. H., Aboulhorma, A., Abramowicz, H., Abreu, H., Abulaiti, Y., 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., 11 Jan 2022, In: Physical Review D. 105, 29 p., 012006.

    Research output: Contribution to journalJournal articleResearchpeer-review

  2. Published

    Search for Higgs boson decays into pairs of light (pseudo)scalar particles in the gamma gamma jj final state 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., Adelmann, D., Adersberger, M., Adye, T., Affolder, A. A., Afik, Y. & 15 others, Dam, Mogens, Bajic, M., Alonso Diaz, A., Hansen, Jørgen Beck, Besjes, G., Hansen, Peter Henrik, Hansen, Jørn Dines, Galster, G. A. G. K., Wiglesworth, Graig, de Almeida Dias, F., Thiele, F. A. J., Monk, J. W., Stark, S. H., Petersen, Troels Christian & Xella, Stefania, 10 Jul 2018, In: Physics Letters B. 782, p. 750-767 17 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  3. Published

    Search for Higgs boson decays into two new low-mass spin-0 particles in the 4b channel with the ATLAS detector using pp collisions at √s=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., 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, Hansen, Peter Henrik, Hansen, Jørgen Beck, Hansen, Jørn Dines, Ignazzi, R., hqz214, H., Monk, J. W., Petersen, Troels Christian, Stark, S. H., Wiglesworth, Graig, Xella, Stefania & ATLAS Collaboration, A. C., 7 Dec 2020, In: Physical Review D. 102, 40 p., 112006.

    Research output: Contribution to journalJournal articleResearchpeer-review

  4. Published

    Search for Higgs boson decays to a photon and a Z boson in pp collisions at √s=7 and 8 TeV with the ATLAS detector

    Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Aben, R., Abi, B., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Hansen, P. H., Petersen, T. C., Thomsen, L. A., Mehlhase, S., Jørgensen, M. D., Galster, G. A. G. K., Pingel, A. M., Løvschall-Jensen, A. E., Alonso Diaz, A. & 3 others, Monk, J. W., Pedersen, L. E. & Wiglesworth, Graig, 13 Feb 2014, In: Physics Letters B. 732, p. 8-27 20 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  5. Published

    Search for Higgs boson decays to beyond-the-Standard-Model light bosons in four-lepton events with the ATLAS detector at root s=13 TeV

    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. & 19 others, Agatonovic-Jovin, T., Agheorghiesei, C., Aguilar-Saavedra, J. A., Ahlen, S. P., Alonso Diaz, A., Besjes, G., Bajic, M., de Almeida Dias, F., Dam, Mogens, Hansen, Peter Henrik, Hansen, Jørn Dines, Hansen, Jørgen Beck, Galster, G. A. G. K., Monk, J. W., Petersen, Troels Christian, Stark, S. H., Thiele, F. A. J., Wiglesworth, Graig & Xella, Stefania, 29 Jun 2018, In: Journal of High Energy Physics. 2018, 6, 51 p., 166.

    Research output: Contribution to journalConference articleResearchpeer-review

  6. Published

    Search for Higgs boson pair production in association with a vector boson in pp collisions at √s=13TeV 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., 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, 41 p., 519.

    Research output: Contribution to journalJournal articleResearchpeer-review

  7. Published

    Search for Higgs boson pair production in the WW(*)WW(*) decay channel using ATLAS data recorded at root 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., hqz214, H., Dam, M., de Almeida Dias, F., Xella, S., Stark, S. H., Hansen, J. B., Wiglesworth, G., Alonso Diaz, A., Hansen, P. H., Besjes, G-J. & 7 others, Petersen, Troels Christian, Ignazzi, R., Galster, G. A. G. K., Camplani, Alessandra, Bajic, M., Monk, J. W. & Hansen, Jørn Dines, 21 May 2019, In: Journal of High Energy Physics. 2019, 5, 38 p., 124.

    Research output: Contribution to journalJournal articleResearchpeer-review

  8. Published

    Search for Higgs boson pair production in the b(b)over-barWW* decay mode 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., Acharya, B. S., Adachi, J., Adam, L., 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., de Almeida Dias, F., Bajic, M., hqz214, H., Dam, Mogens, Besjes, G., Hansen, Jørgen Beck, Galster, G. A. G. K., Hansen, Peter Henrik, Hansen, Jørn Dines, Monk, J. W., Petersen, Troels Christian, Stark, S. H., Wiglesworth, Graig, Xella, Stefania & The ATLAS collaboration, T. A. C., 12 Apr 2019, In: Journal of High Energy Physics. 2019, 4, 47 p., 092.

    Research output: Contribution to journalJournal articleResearchpeer-review

  9. Published

    Search for Higgs boson pair production in the b(b)over-barb(b)over-bar final state from pp collisions at root s=8 TeVwith 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., 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 Sep 2015, In: The European Physical Journal C: Particles and Fields. 75, 9, 412.

    Research output: Contribution to journalJournal articleResearchpeer-review

  10. Published

    Search for Higgs boson pair production in the gamma gamma b(b)over-bar final state with 13TeV pp collision data collected by the ATLAS experiment

    Aaboud, M., Aad, G., 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., Afik, Y. & 19 others, Agheorghiesei, C., Aguilar-Saavedra, J. A., Ahmadov, F., Aielli, G., Alonso Diaz, A., Bajic, M., de Almeida Dias, F., Besjes, G., Dam, Mogens, Galster, G. A. G. K., Hansen, Jørn Dines, Hansen, Peter Henrik, Hansen, Jørgen Beck, Monk, J. W., Petersen, Troels Christian, Thiele, F. A. J., Stark, S. H., Wiglesworth, Graig & Xella, Stefania, 1 Nov 2018, In: Journal of High Energy Physics. 2018, 11, 44 p., 040.

    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 Higgs boson pair production in the..WW * channel using pp collision data recorded at v 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. & 18 others, Afik, Y., Agheorghiesei, C., Aguilar-Saavedra, J. A., Bajic, M., Besjes, G., de Almeida Dias, F., Alonso Diaz, A., Hansen, Peter Henrik, Hansen, Jørgen Beck, Galster, G. A. G. K., Hansen, Jørn Dines, Dam, Mogens, Monk, J. W., Stark, S. H., Thiele, F. A. J., Xella, Stefania, Petersen, Troels Christian & Wiglesworth, Graig, 11 Dec 2018, In: European Physical Journal C. 78, 12, 26 p., 1007.

    Research output: Contribution to journalJournal articleResearchpeer-review

  13. Published

    Search for Higgs boson production in association with a high-energy photon via vector-boson fusion with decay into bottom quark pairs 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., Alonso Diaz, A., Bajic, M., Camplani, A., Dam, M., Galster, G. A. G. K., Hansen, J. D., Hansen, P. H., Hansen, J. B., hqz214, H., Monk, J. W. & 7 others, Ignazzi, R., de Almeida Dias, F., Petersen, Troels Christian, Stark, S. H., Wiglesworth, Graig, Xella, Stefania & ATLAS Collaboration, A. C., 29 Mar 2021, In: Journal of High Energy Physics (Online). 2021, 3, 37 p., 268.

    Research output: Contribution to journalJournal articleResearchpeer-review

  14. Published

    Search for Higgs bosons decaying into new spin-0 or spin-1 particles in four-lepton final states with the ATLAS detector with 139 fb(-1) of pp collision data at root s=13 TeV

    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, Jørgen Beck, Hansen, Peter Henrik, Hansen, Jørn Dines, Ignazzi, R., Petersen, Troels Christian, Wiglesworth, Graig, Xella, Stefania & ATLAS Collaboration, A. C., 8 Mar 2022, In: Journal of High Energy Physics (Online). 2022, 3, 64 p., 041.

    Research output: Contribution to journalJournal articleResearchpeer-review

  15. Published

    Search for Higgs bosons decaying to aa in the mu mu tau tau final state in pp collisions at root s=8 TeV with the ATLAS experiment

    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., 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 Sep 2015, In: Physical Review D (Particles, Fields, Gravitation and Cosmology). 92, 5, 052002.

    Research output: Contribution to journalJournal articleResearchpeer-review

  16. Published

    Search for Higgs bosons produced via vector-boson fusion and decaying into bottom quark pairs in root s=13 TeV pp collisions 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. & 16 others, Afik, Y., Bajic, M., Besjes, G., Dam, Mogens, Alonso Diaz, A., Hansen, Peter Henrik, Hansen, Jørn Dines, Hansen, Jørgen Beck, Galster, G. A. G. K., de Almeida Dias, F., Monk, J. W., Petersen, Troels Christian, Thiele, F. A. J., Stark, S. H., Wiglesworth, Graig & Xella, Stefania, 10 Sep 2018, In: Physical Review D. 98, 5, 29 p., 052003.

    Research output: Contribution to journalJournal articleResearchpeer-review

  17. Published

    Search for High-Mass Resonances Decaying to tau nu 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., Abulaiti, Y., Abreu, H., Abulaiti, Y., Acharya, B. S., Adachi, S., Adamczyk, L., Adelman, J. P., Adersberger, M., Adye, T., Affolder, A. A. & 18 others, Afik, Y., Agheorghiesei, C., Aguilar-Saavedra, J. A., Ahlen, S. P., Dam, Mogens, Hansen, Jørn Dines, Hansen, Jørgen Beck, Hansen, Peter Henrik, Petersen, Troels Christian, Xella, Stefania, Alonso Diaz, A., Wiglesworth, Graig, Monk, J. W., Thiele, F. A. J., Stark, S. H., Bajic, M., de Almeida Dias, F. & Besjes, G., 20 Apr 2018, In: Physical Review Letters. 120, 16, 161802.

    Research output: Contribution to journalJournal articleResearchpeer-review

  18. Published

    Search for H→γγ produced in association with top quarks and constraints on the Yukawa coupling between the top quark and the Higgs boson using data taken at 7 TeV and 8 TeV with the ATLAS detector

    Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S. A., 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., 5 Jan 2015, In: Physics Letters B. 740, p. 222-242 21 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  19. Published

    Search for Invisible Decays of a Higgs Boson Produced in Association with a Z Boson in ATLAS

    Aad, G., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Aben, R., Abi, B., Dam, M., Hansen, J. B., Hansen, J. D., Xella, S., Galster, G. A. G. K., Hansen, P. H., Petersen, T. C., Thomsen, L. A., Mehlhase, S., Jørgensen, M. D., Pingel, A. M., Løvschall-Jensen, A. E., Alonso Diaz, A. & 3 others, Monk, J. W., Pedersen, L. E. & Wiglesworth, Graig, 13 Feb 2014, In: Physical Review Letters. 112, 19 p., 201802.

    Research output: Contribution to journalJournal articleResearchpeer-review

  20. Published

    Search for Lepton-Flavor Violation in Z-Boson Decays with tau Leptons 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, Jørgen Beck, Hansen, Peter Henrik, Hansen, Jørn Dines, Ignazzi, R., Petersen, Troels Christian, Wiglesworth, Graig, Xella, Stefania & ATLAS Collaboration, A. C., 28 Dec 2021, In: Physical Review Letters. 127, 27, 20 p., 271801.

    Research output: Contribution to journalJournal articleResearchpeer-review

  21. 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

  22. Published

    Search for Magnetic Monopoles and Stable High-Electric-Charge Objects in 13 Tev Proton-Proton Collisions with the ATLAS Detector

    Aad, G., Abbott, B., Abbott, DC., Abdinov, O., Abud, AA., Abeling, K., Abhayasinghe, DK., Abidi, S. H., AbouZeid, O. S. A., Abraham, NL., Abramowicz, H., Abreu, H., Abulaiti, Y., Acharya, B. S., Alonso Diaz, A., Camplani, A., Dam, M., Galster, G. A. G. K., hqz214, H., Hansen, P. H. & 10 others, Hansen, Jørgen Beck, Hansen, Jørn Dines, Ignazzi, R., Monk, J. W., Stark, S. H., Petersen, Troels Christian, Wiglesworth, Graig, Xella, Stefania, Bajic, M. & ATLAS Collaboration, A. C., 23 Jan 2020, In: Physical Review Letters. 124, 3, 20 p., 031802.

    Research output: Contribution to journalJournal articleResearchpeer-review

  23. Published

    Search for Magnetic Monopoles in root s=7 TeV pp Collisions with the ATLAS Detector

    Aad, G., 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, Xella, Stefania & Løvschall-Jensen, A. E., 27 Dec 2012, In: Physical Review Letters. 109, 26, p. 261803

    Research output: Contribution to journalJournal articleResearchpeer-review

  24. Published

    Search for Majorana neutrinos in same-sign W W scattering events from pp collisions at √s = 13 TeV

    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, P. H., Hansen, J. D., Hansen, J. B., Ignazzi, R., Petersen, T. C., Wiglesworth, G., Xella, S. & 1 others, ATLAS, A., 15 Sep 2023, In: European Physical Journal C. 83, 9, 26 p., 824.

    Research output: Contribution to journalJournal articleResearchpeer-review

  25. Published

    Search for Minimal Supersymmetric Standard Model Higgs bosons H/A and for a Z ' boson in the tau tau final state produced in pp 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., Abramowicz, H., Abraham, NL., 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. & 6 others, Løvschall-Jensen, A. E., Alonso Diaz, A., Monk, J. W., Pedersen, L. E., Wiglesworth, Graig & Galster, G. A. G. K., 27 Oct 2016, In: European Physical Journal C. 76, 11, 585.

    Research output: Contribution to journalJournal articleResearchpeer-review

ID: 7582