Stefania Xella

Stefania Xella

Associate Professor, Guest Researcher

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    ORCID: 0000-0002-0988-1655

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    1. 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 journal › Journal article › Research › peer-review

    2. 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 journal › Journal article › Research › peer-review

    3. 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 journal › Conference article › Research › peer-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 journal › Journal article › Research › peer-review

    5. 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 journal › Journal article › Research › peer-review

    6. 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 journal › Journal article › Research › peer-review

    7. 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 journal › Journal article › Research › peer-review

    8. Published

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

      Aad, G., Abbott, B., Abud, A., Abeling, K., Abhayasinghe, D. K., Abidi, S. H., Aboulhorma, A., Abramowicz, H., Abreu, H., 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., 11 Jan 2022, In: Physical Review D. 105, 1, 29 p., 012006.

      Research output: Contribution to journal › Journal article › Research › peer-review

    9. Published

      Search for Higgs boson decays into a pair of light bosons in the bb mu mu final state in pp collision at root s=13 TeV with the ATLAS detector

      ATLAS, A., 10 Mar 2019, In: Physics Letters B. 790, p. 22-34 21 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    10. Published

      Search for Higgs and Z Boson Decays to phi gamma 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., 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 Sep 2016, In: Physical Review Letters. 117, 11, 11802.

      Research output: Contribution to journal › Journal article › Research › peer-review

    11. Published

      Search for Higgs and Z Boson Decays to J/psi gamma and Upsilon(nS)gamma 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., 26 Mar 2015, In: Physical Review Letters. 114, 12, 121801.

      Research output: Contribution to journal › Journal article › Research › peer-review

    12. Published

      Search for Higgs Boson Pair Production in the gamma gamma b(b)over-bar Final State Using pp Collision Data at root s=8 TeV from 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., 26 Feb 2015, In: Physical Review Letters. 114, 8, 081802.

      Research output: Contribution to journal › Journal article › Research › peer-review

    13. Published

      Search for Higgs Boson Decays into a Z Boson and a Light Hadronically Decaying Resonance Using 13 TeV pp Collision Data from the ATLAS Detector

      Aaboud, M., Aad, G., Abbott, B., Abbott, DC., Abdinov, O., Abud, AA., Abhayasinghe, D. K., Abidi, S. H., AbouZeid, O. S. A., Abraham, NL., Abramowicz, H., Abreu, H., Abulaiti, Y., Acharya, B. S., Adachi, S., Adam, L., Alonso Diaz, A., Camplani, A., Dam, M., Bajic, M. & 12 others, Galster, G. A. G. K., Hansen, Peter Henrik, Hansen, Jørn Dines, Hansen, Jørgen Beck, hqz214, H., Ignazzi, R., Monk, J. W., Petersen, Troels Christian, Stark, S. H., Wiglesworth, Graig, Xella, Stefania & ATLAS Collaboration, A. C., 25 Nov 2020, In: Physical Review Letters. 125, 22, 22 p., 221802.

      Research output: Contribution to journal › Journal article › Research › peer-review

    14. Published

      Search for Heavy Resonances Decaying into a Photon and a Hadronically Decaying Higgs Boson 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, NL., Abramowicz, H., Abreu, H., Abulaiti, Y., Acharya, B. S., Achkar, B., Adam, L., Camplani, A., Dam, M., Galster, G. A. G. K., hqz214, H., Hansen, J. B. & 9 others, Hansen, Jørn Dines, Hansen, Peter Henrik, Ignazzi, R., Monk, J. W., Petersen, Troels Christian, Stark, S. H., Wiglesworth, Graig, Xella, Stefania & ATLAS Collaboration, A. C., 18 Dec 2020, In: Physical Review Letters. 125, 25, 20 p., 251802.

      Research output: Contribution to journal › Journal article › Research › peer-review

    15. Published

      Search for Heavy Neutral Leptons in Decays of W Bosons Using a Dilepton Displaced Vertex in √s=13  TeV pp Collisions with the ATLAS Detector

      Aad, G., Abbott, B., Abbott, D. C., 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., Petersen, Troels Christian, Wiglesworth, Graig, Xella, Stefania & ATLAS, A., 7 Aug 2023, In: Physical Review Letters. 131, 6, 23 p., 061803.

      Research output: Contribution to journal › Letter › Research › peer-review

    16. Published

      Search for Heavy Higgs Bosons Decaying into Two Tau Leptons with the ATLAS Detector Using pp Collisions at root s=13 TeV

      Aad, G., Abbott, B., Abbott, DC., Abud, AA., Abeling, K., Abhayasinghe, DK., Abidi, S. H., AbouZeid, O. S. A., Abraham, NL., Abramowicz, H., Abreu, H., Abulaiti, Y., Alonso Diaz, A., Camplani, A., Dam, M., hqz214, H., Hansen, J. B., Hansen, J. D., Hansen, P. H., Ignazzi, R. & 7 others, Galster, G. A. G. K., Monk, J. W., Petersen, Troels Christian, Stark, S. H., Wiglesworth, Graig, Xella, Stefania & ATLAS Collaboration, A. C., 27 Jul 2020, In: Physical Review Letters. 125, 5, 22 p., 051801.

      Research output: Contribution to journal › Journal article › Research › peer-review

    17. Published

      Search for Heavy Higgs Bosons A/H Decaying to a Top Quark Pair in pp Collisions at root s=8 TeV 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. & 15 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., Thiele, F. A. J. & de Almeida Dias, F., 9 Nov 2017, In: Physical Review Letters. 119, 19, 191803.

      Research output: Contribution to journal › Journal article › Research › peer-review

    18. Published

      Search for FCNC single top-quark production at sqrt(s) = 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, Xella, Stefania & Løvschall-Jensen, A. E., 12 Jun 2012, In: Physics Letters B. 712, 4-5, p. 351-369

      Research output: Contribution to journal › Journal article › Research › peer-review

    19. Published

      Search for Displaced Leptons 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., 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., 27 Jul 2021, In: Physical Review Letters. 127, 5, 21 p., 051802.

      Research output: Contribution to journal › Journal article › Research › peer-review

    20. Published

      Search for Direct Top Squark Pair Production in Final States with One Isolated Lepton, Jets, and Missing Transverse Momentum in root s=7 TeV pp Collisions Using 4.7 fb-1 of ATLAS Data

      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., 20 Nov 2012, In: Physical Review Letters. 109, 21, p. 211803 18 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    21. Published

      Search for Diphoton Events with Large Missing Transverse Energy in 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, Kittelmann, T. H. & Boelaert, N. M. P., 23 Mar 2011, In: Physical Review Letters. 106, 12, p. 121803 19 p.

      Research output: Contribution to journal › Journal article › Research › peer-review

    22. Published

      Search for Dilepton Resonances in pp Collisions at root s 7 TeV with the ATLAS Detector

      Aad..[et al.], G., Abbott, B., Abdallah, J., Dam, Mogens, Hansen, Jørgen Beck, Hansen, Jørn Dines, Hansen, John Renner, Hansen, Peter Henrik, Jørgensen, M. D., Klinkby, E. B., Petersen, Troels Christian, Xella, Stefania, Boelaert, N. M. P. & Kittelmann, T. H., 29 Dec 2011, In: Physical Review Letters. 107, 27, p. 272002

      Research output: Contribution to journal › Journal article › Research › peer-review

    23. Published

      Search for Dark Photons in Rare Z Boson Decays with the ATLAS Detector

      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, Jørn Dines, Hansen, Jørgen Beck, Ignazzi, R., Petersen, Troels Christian, Wiglesworth, Graig, Xella, Stefania & ATLAS, A., 18 Dec 2023, In: Physical Review Letters. 131, 25, 23 p., 251801.

      Research output: Contribution to journal › Letter › Research › peer-review

    24. Published

      Search for Dark Matter in Events with a Hadronically Decaying W or Z Boson and Missing Transverse Momentum in pp Collisions at root s=8 TeV with the ATLAS Detector

      Aad, A., Abajyan, T., Abbott, B., Abdallah, J., Abdel Khalek, S., Abdinov, O., Aben, R., Abi, B., Abolins, M., AbouZeid, O. S., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Hansen, P. H., Galster, G. A. G. K., Petersen, T. C., Thomsen, L. A., Mehlhase, S., Jørgensen, M. D. & 6 others, Pingel, A. M., Løvschall-Jensen, A. E., Alonso Diaz, A., Monk, J. W., Pedersen, L. E. & Wiglesworth, Graig, 29 Jan 2014, In: Physical Review Letters. 112, 4, 041802.

      Research output: Contribution to journal › Journal article › Research › peer-review

    25. Published

      Search for Dark Matter in Events with Missing Transverse Momentum and a Higgs Boson Decaying to Two Photons 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., 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., 22 Sep 2015, In: Physical Review Letters. 115, 13, 131801.

      Research output: Contribution to journal › Journal article › Research › peer-review

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