Stefania Xella

Stefania Xella

Associate Professor, Guest Researcher


  1. Published

    A search for top squarks with R-parity-violating decays to all-hadronic final states with the ATLAS detector in root s=8 TeV proton-proton collisions

    Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Abeloos, B., Aben, R., Abolins, M., AbouZeid, O. S., Abramowicz, H., Abreu, 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., Wiglesworth, Graig, Galster, G. A. G. K. & Pedersen, L. E., 10 Jun 2016, In: Journal of High Energy Physics (Online). 2016, 6, 067.

    Research output: Contribution to journalJournal articleResearchpeer-review

  2. Published

    A search for ttbar resonances with the ATLAS detector in 2.05 fb^-1 of proton-proton collisions at sqrt(s) = 7 TeV

    Aad, G., Dam, Mogens, Hansen, Jørgen Beck, Hansen, Jørn Dines, Hansen, Peter Henrik, Hansen, John Renner, Heisterkamp, S. J. F., Mehlhase, S., Boelaert, N. M. P., Klinkby, E. B., Jørgensen, M. D., Petersen, Troels Christian, Nilsson, B. S., Løvschall-Jensen, A. E. & Xella, Stefania, 1 Jul 2012, In: European Physical Journal C. 72, p. 2083

    Research output: Contribution to journalJournal articleResearchpeer-review

  3. Published

    A strategy for a general search for new phenomena using data-derived signal regions and its application within the ATLAS experiment

    ATLAS, A., 6 Feb 2019, In: European Physical Journal C. 79, 2, 45 p., 120.

    Research output: Contribution to journalJournal articleResearchpeer-review

  4. Published

    A study of the material in the ATLAS inner detector using secondary hadronic interactions

    Aad, G., Dam, Mogens, Hansen, Jørgen Beck, Hansen, Peter Henrik, Hansen, John Renner, Hansen, Jørn Dines, Heisterkamp, S. J. F., Jørgensen, M. D., Klinkby, E. B., Boelaert, N. M. P., Mehlhase, S., Nilsson, B. S., Petersen, Troels Christian & Xella, Stefania, 13 Jan 2012, In: Journal of Instrumentation. 7, p. P01013 41 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  5. Published

    ATLAS Collaboration

    Aaboud, M., Aad, G., Abbott, B., Abdallah, J., 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., Bajic, M. & 14 others, Monk, J. W., Petersen, Troels Christian, Dam, Mogens, Hansen, Jørgen Beck, Stark, S. H., Wiglesworth, Graig, de Almeida Dias, F., Hansen, Jørn Dines, Alonso Diaz, A., Galster, G. A. G. K., Thiele, F. A. J., Hansen, Peter Henrik, Besjes, G. & Xella, Stefania, 2017, In: Nuclear Physics A. 967, p. 942-964

    Research output: Contribution to journalConference articleResearchpeer-review

  6. Published

    ATLAS Run 1 searches for direct pair production of third-generation squarks at the Large Hadron Collider

    Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Aben, R., Abolins, M., AbouZeid, O. S., Abramowicz, H., Abreu, H., Abreu, R., Abulaiti, Y., Acharya, B. S., Adamczyk, L., Adams, D. L., Adelman, J., Adomeit, S., Adye, T., Affolder, A. A., Agatonovic-Jovin, T., Agricola, J. & 40 others, Aguilar-Saavedra, J. A., Ahlen, S. P., Ahmadov, F., Aielli, G., Akerstedt, H., Åkesson, T. P. A., Akimov, A. V., Alberghi, G. L., Albert, J., Albrand, S., Alconada Verzini, M. J., Aleksa, M., Aleksandrov, I. N., Alexa, C., Alexander, G., Alexopoulos, T., Alhroob, M., Alimonti, G., Alio, L., Alison, J., Alkire, S. P., Allbrooke, B. M. M., Allport, P. P., Aloisio, A., Alonso Diaz, A., Besjes, G., Dam, Mogens, Galster, G. A. G. K., Hansen, Jørgen Beck, Hansen, Jørn Dines, Hansen, Peter Henrik, Jørgensen, M. D., Løvschall-Jensen, A. E., Monk, J. W., Mortensen, S. S., Pedersen, L. E., Petersen, Troels Christian, Pingel, A. M., Wiglesworth, Graig & Xella, Stefania, 2015, In: The European Physical Journal C: Particles and Fields. 75, 48 p., 510.

    Research output: Contribution to journalJournal articleResearchpeer-review

  7. Published

    ATLAS Trigger and Data Acquisition Upgrades for the High Luminosity LHC

    Camplani, A., Alonso Diaz, A., Dam, M., de Almeida Dias, F., AbouZeid, O. S. A., Bajic, M., Galster, G. A. G. K., Hansen, J. D., Hansen, P. H., Monk, J. W., Ignazzi, R., Hansen, J. B., hqz214, H., Stark, S. H., Petersen, T. C., Wiglesworth, G., Xella, S., ATLAS Collaboration, Aad, G., Abbott, B. & 1 others, Abbott, D., 5 Aug 2019, In: P o S - Proceedings of Science. 367, 6 p., 055.

    Research output: Contribution to journalConference articleResearchpeer-review

  8. Published

    ATLAS b-jet identification performance and efficiency measurement with t(t)over-bar events in pp collisions at root s=13 TeV

    ATLAS, A., 10 Nov 2019, In: European Physical Journal C. 79, 11, 36 p., 970.

    Research output: Contribution to journalJournal articleResearchpeer-review

  9. Published

    ATLAS data quality operations and performance for 2015-2018 data-taking

    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., Dam, M., Camplani, A., Hansen, J. D., Hansen, P. H., Galster, G. A. G. K., Hansen, J. B. & 8 others, hqz214, H., Ignazzi, R., Stark, S. H., Petersen, Troels Christian, Monk, J. W., Wiglesworth, Graig, Xella, Stefania & ATLAS Collaboration, A. C., 1 Apr 2020, In: Journal of Instrumentation. 15, 4, 44 p., P04003.

    Research output: Contribution to journalJournal articleResearchpeer-review

  10. Published

    ATLAS flavour-tagging algorithms for the LHC Run 2 pp collision dataset

    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., Adam Bourdarios, C., Adamczyk, L., Adamek, L., Dam, M., Camplani, A., Hansen, J. D., Hansen, P. H., Hansen, J. B., Ignazzi, R. & 4 others, Petersen, Troels Christian, Wiglesworth, Graig, Xella, Stefania & ATLAS, A., 31 Jul 2023, In: European Physical Journal C. 83, 37 p., 681.

    Research output: Contribution to journalJournal articleResearchpeer-review

  11. Published

    ATLAS measurements of the properties of jets for boosted particle searches

    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., Mehlhase, S., Nilsson, B. S., Petersen, Troels Christian, Xella, Stefania & Løvschall-Jensen, A. E., 15 Oct 2012, In: Physical Review D (Particles, Fields, Gravitation and Cosmology). 86, 7, p. 072006 30 p.

    Research output: Contribution to journalJournal articleResearchpeer-review

  12. Published

    ATLAS search for new phenomena in dijet mass and angular distributions using pp collisions at root s=7 TeV

    Aad, G., Abjyan, T., Abbott, B., Dam, Mogens, Hansen, Jørgen Beck, Hansen, Jørn Dines, Hansen, Peter Henrik, Hansen, John Renner, Klinkby, E. B., Boelaert, N. M. P., Jørgensen, M. D., Heisterkamp, S. J. F., Løvschall-Jensen, A. E., Mehlhase, S., Nilsson, B. S., Petersen, Troels Christian & Xella, Stefania, 1 Jan 2013, In: Journal of High Energy Physics (Online). 2013, 1, 029.

    Research output: Contribution to journalJournal articleResearchpeer-review

  13. Published

    ATLAS workshop on tau lepton physics 2009

    Anderazza, A., Czyczula, Z. A., Dam, Mogens, Kadlecik, P., Rosendahl, P. L. & Xella, Stefania, 2009, University of Copenhagen

    Research output: Other contributionResearch

  14. Published

    Addendum to 'Measurement of the t (t)over-bar production cross-section using e mu events with b-tagged jets in pp collisions at root s = 7 and 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., 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., 23 Nov 2016, In: European Physical Journal C. 76, 11, 642.

    Research output: Contribution to journalComment/debateResearch

  15. Published

    Alignment of the ATLAS Inner Detector in Run 2

    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., Acharya, B. S., Achkar, B., Adam, L., Bourdarios, CA., Camplani, A., Dam, M., hqz214, H., Galster, G. A. G. K. & 10 others, Hansen, Jørgen Beck, 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., 24 Dec 2020, In: European Physical Journal C. 80, 12, 41 p., 1194.

    Research output: Contribution to journalJournal articleResearchpeer-review

  16. Published

    An upgraded ATLAS Central Trigger for post-2014 LHC luminosities

    Anders, G., Berge, D., Bertelsen, Henrik, Childers, T., Dam, Mogens, Dobson, E., Ellis, N., Farthouat, P., Gabaldon, C., Gorini, B., Haas, S., Kaneda, M., Maettig, S., Messina, A., Ohm, C., Pauly, T., Poettgen, R., Spiwoks, R., Wengler, T. & Xella, Stefania, 1 Feb 2013, In: Journal of Instrumentation. 8, C02031.

    Research output: Contribution to journalJournal articleResearchpeer-review

  17. Published

    Analysis of events with b-jets and a pair of leptons of the same charge in pp collisions at √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., Abulaiti, Y., Acharya, B. S., Adamczyk, L., Adams, D. L., Adelman, J., Adomeit, S., Adye, T., Affolder, A. A., Agatonovic-Jovin, T., Aguilar-Saavedra, J. A. & 95 others, Agustoni, M., Ahlen, S. P., Ahmadov, F., Aielli, G., Akerstedt, H., Åkesson, T. P. A., Akimoto, G., Akimov, A. V., Alberghi, G. L., Albert, J., Albrand, S., Alconada Verzini, M. J., Aleksa, M., Aleksandrov, I. N., Alexa, C., Alexander, G., Alexopoulos, T., Alhroob, M., Alimonti, G., Alio, L., Alison, J., Alkire, S. P., Allbrooke, B. M. M., Allport, P. P., Aloisio, A., Alonso, A., Alonso, F., Alpigiani, C., Altheimer, A., Álvarez Piqueras, D., Alviggi, M. G., Amaral Coutinho, Y., Bevan, A. J., Bianchi, R. M., Bianchini, L., Biebel, O., Bieniek, S. P., Biglietti, M., Bilokon, H., Binet, S., Bingul, A., Black, C. W., Black, J. E., Black, K. M., Blackburn, D., Blair, R. E., Blanchard, J., Blanco, J. E., Blazek, T., Bloch, I., Blocker, C., Blum, W., Blumenschein, U., Bobbink, G. J., Bobrovnikov, V. S., Bocchetta, S. S., Bocci, A., Bock, C., Boehler, M., Bogaerts, J. A., Bogdanchikov, A. G., Bohm, C., Boisvert, V., Boldea, V., Boldyrev, A. S., Bona, M., Boonekamp, M., Bosman, M., Bouffard, J., Boutouil, S., Boyd, J., Bozic, I., Bracinik, J., Brandt, A., Brandt, G., Brandt, O., Bratzler, U., Brau, B., Brau, J. E., Alonso Diaz, A., Dam, Mogens, Galster, G. A. G. K., Hansen, Jørgen Beck, Hansen, Jørn Dines, Hansen, Peter Henrik, Jørgensen, M. D., Løvschall-Jensen, A. E., Monk, J. W., Mortensen, S. S., Pedersen, L. E., Petersen, Troels Christian, Pingel, A. M., Thomsen, L. A., Wiglesworth, Graig & Xella, Stefania, 2015, In: Journal of High Energy Physics (Online). 2015, 10, 50 p., 150.

    Research output: Contribution to journalJournal articleResearchpeer-review

  18. Published

    Analysis of the Wtb vertex from the measurement of triple-differential angular decay rates of single top quarks produced in the t-channel at root s=8 TeV with the ATLAS detector

    Aaboud, M., Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Abeloos, B., AbouZeid, O. S., Abraham, NL., Abramowicz, H., Abreu, H., Abreu, R., Abulaiti, Y., Acharya, S., Adachi, S., Adamczyk, L., Adelman, J. P., Adersberger, M., Adye, T., Affolder, A. A., Dam, M. & 13 others, Hansen, Jørn Dines, Hansen, Jørgen Beck, Hansen, Peter Henrik, Petersen, Troels Christian, Monk, J. W., Pedersen, L. E., Wiglesworth, Graig, Galster, G. A. G. K., Stark, S. H., Besjes, G., de Almeida Dias, F., Xella, Stefania & Bajic, M., 2017, In: Journal of High Energy Physics. 2017, 12, p. 1-59 59 p., 017.

    Research output: Contribution to journalJournal articleResearchpeer-review

  19. Published

    Angular analysis of B-d(0) -> K* mu(+)mu(-) decays 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. 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., Agatonovic-Jovin, T., Agheorghiesei, C. & 16 others, Aguilar-Saavedra, J. A., Alonso Diaz, A., Besjes, G., de Almeida Dias, F., Dam, Mogens, Bajic, M., Thiele, F. A. J., Galster, G. A. G. K., Hansen, Jørgen Beck, Hansen, Jørn Dines, Hansen, Peter Henrik, Monk, J. W., Stark, S. H., Petersen, Troels Christian, Wiglesworth, Graig & Xella, Stefania, 8 Oct 2018, In: The Journal of High Energy Physics. 2018, 10, 47 p., 047.

    Research output: Contribution to journalJournal articleResearchpeer-review

  20. Published

    Angular distributions of leptons from J/¿'s produced in 920 GeV fixed target proton-nucleus collisions

    Hera-B collaboration, T., Abt...[et al.], I., Dam, Mogens, Groth-Jensen, J., Hansen, Jørn Dines, Petersen, A. B., Muresan, R. & Xella, Stefania, 2009, In: European Physical Journal C. 60, 4, p. 517-524

    Research output: Contribution to journalJournal articleResearchpeer-review

  21. Published

    Anomaly detection search for new resonances decaying into a Higgs boson and a generic new particle X in hadronic final states using √s=13  TeV pp collisions 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. B., Hansen, P. H., Hansen, J. D., Ignazzi, R., Petersen, T. C., Wiglesworth, G., Xella, S. & 1 others, ATLAS, A., 18 Sep 2023, In: Physical Review D. 108, 5, 33 p., 052009.

    Research output: Contribution to journalJournal articleResearchpeer-review

  22. Published

    AtlFast3: the next generation of fast simulation in ATLAS

    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. B., Hansen, P. H., Hansen, J. D., Ignazzi, R., Petersen, T. C., Wiglesworth, G., Xella, S. & 1 others, ATLAS Collaboration, A. C., 11 Mar 2022, In: Computing and Software for Big Science. 6, 54 p., 7.

    Research output: Contribution to journalJournal articleResearchpeer-review

  23. Published

    Beam-induced and cosmic-ray backgrounds observed in the ATLAS detector during the LHC 2012 proton-proton running period

    Aad, G., Abbott, B., Abdallah, J., Abdinov, O., Abeloos, B., Aben, R., Abolins, M., AbouZeid, O. S., Nitzan, A., Abramowicz, H., Dam, M., Hansen, J. D., Hansen, J. B., Xella, S., Hansen, P. H., Petersen, T. C., Pingel, A. M., Alonso Diaz, A., Monk, J. W., Galster, G. A. G. K. & 6 others, Thomsen, L. A., Løvschall-Jensen, A. E., Pingel, A. M., Pedersen, L. E., Wiglesworth, Graig & Pedersen, L. E., 11 May 2016, In: Journal of Instrumentation. 11, P05013.

    Research output: Contribution to journalJournal articleResearchpeer-review

  24. Published

    Bottom production cross section from double muonic decays of b- flavoured hadrons in 920 GeV proton-nucleus collisions

    Abt....[et al.], I., Dam, Mogens, Hansen, Jørn Dines, Groth-Jensen, J., Muresan, R., Petersen, B. A. A., Klinkby, E. B. & Xella, Stefania, 2007, In: Physics Letters B. 650, 2-3, p. 103-110

    Research output: Contribution to journalJournal articleResearchpeer-review

  25. Published

    CP Properties of Higgs Boson Interactions with Top Quarks in the (tt)over-barH and tH Processes Using H -> gamma gamma 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., Abreu, H., Abulaiti, Y., Alonso Diaz, A., hqz214, H., Camplani, A., Dam, M., Galster, G. A. G. K., Hansen, J. D., Hansen, P. H., Hansen, J. B. & 7 others, Ignazzi, R., Monk, J. W., Petersen, Troels Christian, Wiglesworth, Graig, Stark, S. H., Xella, Stefania & ATLAS Collaboration, A. C., 5 Aug 2020, In: Physical Review Letters. 125, 6, 21 p., 061802.

    Research output: Contribution to journalJournal articleResearchpeer-review

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