Home > Research > Researchers > Dr Andre Sopczak > Publications

Dr Andre Sopczak

Formerly at Lancaster University

  1. 2009
  2. Published

    Search for resonant diphoton production with the D0 detector

    D0 Collaboration, T., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P., Rakitin, A. & Sopczak, A., 12/06/2009, In: Physical review letters. 102, 23, 7 p., 231801.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  3. Published

    Search for the standard model Higgs boson in tau final states

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P., Rakitin, A. & Sopczak, A., 25/06/2009, In: Physical review letters. 102, 25, 7 p., 251801.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  4. Published

    Measurements of differential cross sections of Z/gamma*+jets+X events in proton anti-proton collisions at sqrt{s}=1.96 TeV

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P. & Sopczak, A., 6/07/2009, In: Physics Letters B. 678, 1, p. 45-54 10 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  5. Published

    Search for NMSSM Higgs bosons in the h->aa->mumu mumu, mumu tautau channels using ppbar collisions at sqrt{s}=1.96 TeV

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P., Rakitin, A. & Sopczak, A., 3/08/2009, In: Physical review letters. 103, 6, 7 p., 061801.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  6. Published

    Search for resonant pair production of neutral long-lived particles decaying to bbbar in ppbar collisions at sqrt(s)=1.96 TeV

    D0 Collaboration, T., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P., Rakitin, A. & Sopczak, A., 13/08/2009, In: Physical review letters. 103, 7, 7 p., 071801.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  7. Published

    Search for dark photons from supersymmetric hidden valleys

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P., Rakitin, A. & Sopczak, A., 17/08/2009, In: Physical review letters. 103, 8, 7 p., 081802.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  8. Published

    Measurement of the ttbar production cross section and top quark mass extraction using dilepton events in ppbar collisions

    D0 Collaboration, T., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P., Rakitin, A. & Sopczak, A., 24/08/2009, In: Physics Letters B. 679, 3, p. 177-185 9 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  9. Published

    Observation of Single Top-Quark Production

    Abazov, V. M., Abbott, B., Abolins, M., Acharya, B. S., Adams, M., Adams, T., Aguilo, E., Ahsan, M., Alexeev, G. D., Alkhazov, G., Alton, A., Alverson, G., Alves, G. A., Ancu, L. S., Andeen, T., Anzelc, M. S., Aoki, M., Arnoud, Y., Arov, M., Arthaud, M., & 31 othersAskew, A., Asman, B., Atramentov, O., Avila, C., BackusMayes, J., Badaud, F., Bagby, L., Baldin, B., Bandurin, D. V., Banerjee, P., Banerjee, S., Barberis, E., Barfuss, A. -F., Bargassa, P., Baringer, P., Barreto, J., Bartlett, J. F., Bassler, U., Bauer, D., Beale, S., Bean, A., Beri, S. B., Bertram, I., Borissov, G., Fox, H., Johnson, M., Love, P., Ratoff, P. N., Sopczak, A., Williams, M. R. J. & D0 Collaboration, 28/08/2009, In: Physical review letters. 103, 9, p. - 7 p., 092001.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  10. Published

    Search for squark production in events with jets, hadronically decaying tau leptons and missing transverse energy at sqrt(s)=1.96 TeV

    D0 Collaboration, T., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Rakitin, A., Love, P. & Sopczak, A., 14/09/2009, In: Physics Letters B. 680, 1, p. 24-33 10 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  11. Published

    Direct measurement of the mass difference between top and antitop quarks

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P., Rakitin, A. & Sopczak, A., 21/09/2009, In: Physical review letters. 103, 13, 7 p., 132001.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  12. Published

    Measurement of trilinear gauge boson couplings from WW + WZ to lnu jj events in pp-bar collisions at sqrt{s}=1.96 TeV

    D0 Collaboration, T., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P., Rakitin, A. & Sopczak, A., 23/09/2009, In: Physical Review D. 80, 5, 13 p., 053012.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  13. Published

    Search for charged Higgs bosons in decays of top quarks

    D0 Collaboration, T., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P., Rakitin, A. & Sopczak, A., 30/09/2009, In: Physical Review D. 80, 5, 7 p., 051107(R).

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  14. Published

    Measurement of the W boson mass

    D0 Collaboration, T., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Rakitin, A., Love, P. & Sopczak, A., 1/10/2009, In: Physical review letters. 103, 14, 7 p., 141801.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  15. Published

    Combination of ttbar cross section measurements and constraints on the mass of the top quark and its decays into charged Higgs bosons

    Collaboration, D., Abazov, V., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P., Rakitin, A. & Sopczak, A., 19/10/2009, In: Physical Review D. 80, 7, 8 p., 071102(R) .

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  16. Published

    Search for pair production of first-generation leptoquarks in p pbar collisions at sqrt(s)=1.96 TeV

    D0 Collaboration, T., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P., Rakitin, A. & Sopczak, A., 2/11/2009, In: Physics Letters B. 681, 3, p. 224-232 9 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  17. Published

    Measurement of dijet angular distributions at sqrt{s}=1.96TeV and searches for quark compositeness and extra spatial dimensions

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Rakitin, A., Love, P. & Sopczak, A., 5/11/2009, In: Physical review letters. 103, 19, 7 p., 191803.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  18. Published

    Measurement of the top quark mass in final states with two leptons

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P., Rakitin, A. & Sopczak, A., 20/11/2009, In: Physical Review D. 80, 9, 20 p., 092006.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  19. Published

    Direct measurement of the W boson width

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Rakitin, A., Love, P. & Sopczak, A., 4/12/2009, In: Physical review letters. 103, 23, 7 p., 231802.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  20. Published

    Search for charged Higgs bosons in top quark decays

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Rakitin, A. & Sopczak, A., 7/12/2009, In: Physics Letters B. 682, 3, p. 278-286 9 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  21. Published

    Determination of the strong coupling constant from the inclusive jet cross section in ppbar collisions at sqrt(s)=1.96 TeV

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P. & Sopczak, A., 29/12/2009, In: Physical Review D. 80, 11, 7 p., 111107(R) .

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  22. 2010
  23. Published

    Measurement of the t-channel single top quark production cross section

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P., Rakitin, A. & Sopczak, A., 4/01/2010, In: Physics Letters B. 682, 4-5, p. 363-369 7 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  24. Published

    Measurement of Z/gamma*+jet+X angular distributions in ppbar collisions at sqrt{s}=1.96 TeV

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P., Rakitin, A. & Sopczak, A., 4/01/2010, In: Physics Letters B. 682, 4-5, p. 370-380 11 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  25. Published

    Search for a resonance decaying into WZ boson pairs in $p\bar{p}$ collisions

    D0 Collaboration, T., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P. & Sopczak, A., 9/02/2010, In: Physical review letters. 104, 6, 7 p., 061801.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  26. Published

    Combination of Tevatron searches for the standard model Higgs boson in the W+W- decay mode

    Bertram, I., Borissov, G., Fox, H., Love, P., Price, D., Ratoff, P., Sopczak, A. & Williams, M., 12/02/2010, In: Physical review letters. 104, 6, 11 p., 061802.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  27. Published

    Search for Higgs boson production in dilepton and missing energy final states with 5.4 fb-1 of p-pbar collisions at sqrt(s) =1.96 TeV

    D0 Collaboration, T., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P. & Sopczak, A., 12/02/2010, In: Physical review letters. 104, 6, 7 p., 061804.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  28. Published

    Search for the Standard Model Higgs Boson in the ZH->vvbb Channel in 5.2 fb-1 of p-pbar Collisions at sqrt(s)=1.96 TeV

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P. & Sopczak, A., 18/02/2010, In: Physical review letters. 104, 7, 7 p., 071801.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  29. Published

    Double parton interactions in photon+3 jet events in ppbar collisions sqrt{s}=1.96 TeV

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P. & Sopczak, A., 31/03/2010, In: Physical Review D. 81, 5, 15 p., 052012.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  30. Published

    Search for the associated production of a b quark and a neutral supersymmetric Higgs boson which decays to tau pairs

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P. & Sopczak, A., 14/04/2010, In: Physical review letters. 104, 15, 7 p., 151801.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  31. Published

    Search for single top quarks in the tau+jets channel using 4.8 fb$^{-1}$ of $p\bar{p}$ collision data

    D0 Collaboration, T., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P. & Sopczak, A., 7/06/2010, In: Physics Letters B. 690, 1, p. 5-14 10 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  32. Published

    Search for Randall-Sundrum gravitons in the dielectron and diphoton final states with 5.4 fb-1 of data from ppbar collisions at sqrt(s)=1.96 TeV

    D0 Collaboration, T., Abazov, V., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P. & Sopczak, A., 17/06/2010, In: Physical review letters. 104, 24, 7 p., 241802.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  33. Published

    Combined Tevatron upper limit on gg→H→W+W- and constraints on the Higgs boson mass in fourth-generation fermion models

    Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P., Sopczak, A. & D0 Collaboration, T., 15/07/2010, In: Physical Review D. 82, 1, 12 p., 011102(R).

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  34. Published

    b-Jet Identification in the D0 Experiment

    D0 Collaboration, T., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P. & Sopczak, A., 11/08/2010, In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 620, 2-3, p. 490-517 28 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  35. Published

    Evidence for an anomalous like-sign dimuon charge asymmetry

    Abazov, V. M., Abbott, B., Abolins, M., Acharya, B. S., Adams, M., Adams, T., Aguilo, E., Alexeev, G. D., Alkhazov, G., Alton, A., Alverson, G., Alves, G. A., Ancu, L. S., Aoki, M., Arnoud, Y., Arov, M., Askew, A., Asman, B., Atramentov, O., Avila, C., & 31 othersBackusMayes, J., Badaud, F., Bagby, L., Baldin, B., Bandurin, D. V., Banerjee, S., Barberis, E., Barfuss, A. -F., Baringer, P., Barreto, J., Bartlett, J. F., Bassler, U., Beale, S., Bean, A., Begalli, M., Begel, M., Belanger-Champagne, C., Bellantoni, L., Benitez, J. A., Beri, S. B., Bernardi, G., Bertram, I., Borissov, G., Davies, G., Fox, H., Johnson, M., Love, P., Price, D., Sopczak, A., Williams, M. & D0 Collaboration, 16/08/2010, In: Physical Review D. 82, 3, 30 p., 032001.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  36. Published

    Measurement of the ttbar cross section using high-multiplicity jet events

    D0 Collaboration, T., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P. & Sopczak, A., 20/08/2010, In: Physical Review D. 82, 3, 16 p., 032002.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  37. Published

    Search for flavor changing neutral currents via quark-gluon couplings in single top quark production using 2.3 fb^-1 of ppbar collisions

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P. & Sopczak, A., 27/09/2010, In: Physics Letters B. 693, 2, p. 81-87 7 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  38. Published

    Search for scalar bottom quarks and third-generation leptoquarks in ppbar collisions at sqrt(s) = 1.96 TeV

    D0 Collaboration, T., Bertram, I., Borissov, G., Fox, H., Ratoff, P., Williams, M., Love, P. & Sopczak, A., 27/09/2010, In: Physics Letters B. 693, 2, p. 95-101 7 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  39. Published

    Dependence of the $t\bar{t}$ production cross section on the transverse momentum of the top quark

    D0 Collaboration, T., Abazov, V., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P. & Sopczak, A., 18/10/2010, In: Physics Letters B. 693, 15, p. 515-521 7 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  40. Published

    Measurement of the dijet invariant mass cross section in proton anti-proton collisions at sqrt{s} = 1.96 TeV

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P. & Sopczak, A., 18/10/2010, In: Physics Letters B. 693, 5, p. 531-538 8 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  41. Published

    Measurement of the normalized Z/gamma*->mu+mu- transverse momentum distribution in p\bar{p} collisions at sqrt{s}=1.96 TeV

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P. & Sopczak, A., 18/10/2010, In: Physics Letters B. 693, 5, p. 522-530 9 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  42. Published

    Search for the rare decay B_s^0->mu^+mu^-

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P. & Sopczak, A., 18/10/2010, In: Physics Letters B. 693, 5, p. 539-544 6 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  43. Published

    Measurement of ttbar production in the tau + jets topology using ppbar collisions at sqrt{s} = 1.96 TeV

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P. & Sopczak, A., 27/10/2010, In: Physical Review D. 82, 7, 7 p., 071102(R).

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  44. Published

    Search for sneutrino production in emu final states in 5.3 fb^-1 of ppbar collisions at sqrt(s) =1.96 TeV

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P. & Sopczak, A., 5/11/2010, In: Physical review letters. 105, 19, 7 p., 191802.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  45. Published

    Search for events with leptonic jets and missing transverse energy in ppbar collisions at sqrt(s)=1.96 TeV

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P. & Sopczak, A., 19/11/2010, In: Physical review letters. 105, 21, 7 p., 211802.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  46. Published

    Search for new fermions ("quirks") at the Fermilab Tevatron Collider

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P. & Sopczak, A., 19/11/2010, In: Physical review letters. 105, 21, 6 p., 211803.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  47. Published

    Search for diphoton events with large missing transverse energy in 6.3 fb-1 of ppbar collisions at sqrt(s)=1.96 TeV

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P. & Sopczak, A., 24/11/2010, In: Physical review letters. 105, 22, 8 p., 221802.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  48. 2011
  49. Published

    Measurement of the $WZ\rightarrow \ellν\ell\ell$ cross section and limits on anomalous triple gauge couplings in $p\bar{p}$ collisions at $\sqrt{s}$ = 1.96 TeV

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P. & Sopczak, A., 10/01/2011, In: Physics Letters B. 695, 1-4, p. 67-73 7 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  50. Published

    Search for a heavy neutral gauge boson in the dielectron channel with 5.4 fb-1 of ppbar collisions at sqrt(s) = 1.96 TeV

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P. & Sopczak, A., 10/01/2011, In: Physics Letters B. 695, 1-4, p. 88-94 7 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  51. Published

    Determination of the width of the top quark

    D0 Collaboration, 11/01/2011, In: Physical review letters. 106, 2, 7 p., 022001.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  52. Published

    Search for pair production of the scalar top quark in the electron + muon final state

    Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P., Sopczak, A. & Collaboration, D., 7/02/2011, In: Physics Letters B. 696, 4, p. 321-327 7 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  53. Published

    Measurement of the W boson helicity in top quark decays using 5.4  fb-1 of pp̅ collision data

    Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P., Sopczak, A. & Collaboration, D., 18/02/2011, In: Physical Review D. 83, 3, 18 p., 032009.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

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