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Dr Andre Sopczak

Formerly at Lancaster University

  1. 2008
  2. Published

    Search for neutral Higgs bosons in multi-$b$-jet events in $p\bar{p}$ collisions at $\sqrt{s} = 1.96$ TeV

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Rakitin, A., Love, P. & Sopczak, A., 26/09/2008, In: Physical review letters. 101, 22, 7 p., 221802.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  3. Published

    Search for long-lived particles decaying into electron or photon pairs with the D0 detector

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P., Rakitin, A. & Sopczak, A., 12/09/2008, In: Physical review letters. 101, 11, 7 p., 111802.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  4. Published

    Measurement of the differential cross section for the production of an isolated photon with associated jet 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., 11/09/2008, In: Physics Letters B. 666, 5, p. 435-445 11 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  5. Published

    Search for Higgs bosons decaying to tau pairs in pp̅ collisions with the D0 detector

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P., Rakitin, A. & Sopczak, A., 14/08/2008, In: Physical review letters. 101, 7, 7 p., 071804.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  6. Published

    Measurement of the ratio of the $p\bar{p}\to W$+$c$-jet cross section to the inclusive $p\bar{p}\to W$+jets cross section

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P., Rakitin, A. & Sopczak, A., 7/08/2008, In: Physics Letters B. 666, 1, p. 23-30 8 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  7. Published

    Search for Decay of a Fermiophobic Higgs Boson hf→γγ with the D0 Detector at √s=1.96  TeV

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P., Rakitin, A. & Sopczak, A., 29/07/2008, In: Physical review letters. 101, 5, 7 p., 051801.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  8. Published

    Evidence for production of single top quarks

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P., Rakitin, A. & Sopczak, A., 14/07/2008, In: Physical Review D. 78, 1, 47 p., 012005.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  9. Published

    Search for pair production of doubly-charged Higgs bosons in the H^{++}H^{--}^ to mu^+mu^+mu^-mu^- final state at D0

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P., Rakitin, A. & Sopczak, A., 13/07/2008, In: Physical review letters. 101, 7, 7 p., 071803.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  10. Published

    Measurement of the inclusive jet cross section in $p \bar{p}$ collisions at $\sqrt{s}=1.96 {\rm TeV}$

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P., Rakitin, A. & Sopczak, A., 6/07/2008, In: Physical review letters. 101, 6, 7 p., 062001.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  11. Published

    Search for scalar top quarks in the acoplanar charm jets and missing transverse energy final state in $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Rakitin, A., Sopczak, A. & Love, P., 3/07/2008, In: Physics Letters B. 665, 1, p. 1-8 8 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  12. Published

    Observation of the Bc meson mass in the exclusive decay Bc --> Jpsi Pi

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Love, P., Rakitin, A. & Sopczak, A., 2/07/2008, In: Physical review letters. 101, 1, 6 p., 012001.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  13. Published

    First study of the radiation-amplitude zero in Wgamma production and limits on anomalous WWgamma couplings at sqrt(s)=1.96 TeV

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P., Rakitin, A. & Sopczak, A., 20/06/2008, In: Physical review letters. 100, 24, 7 p., 241805.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  14. Published

    Search for sneutrino particles in e + mu final states 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., 19/06/2008, In: Physical review letters. 100, 24, 7 p., 241803.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  15. Published

    Search for W-prime boson resonances decaying to a top quark and a bottom quark

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P., Rakitin, A. & Sopczak, A., 30/05/2008, In: Physical review letters. 100, 21, 7 p., 211803.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  16. Published

    A combined search for the standard model Higgs boson at sqrt{s}=1.96 TeV

    Collaboration, D., M. Abazov, V., Bertram, I., Borissov, G., Fox, H., Love, P., Rakitin, A., Ratoff, P., Sopczak, A. & Williams, M., 15/05/2008, In: Physics Letters B. 663, 1-2, p. 26-36 11 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  17. Published

    Simultaneous measurement of the ratio B(t->Wb)/B(t->Wq) and the top quark pair production cross section with the D0 detector at sqrt(s)=1.96 TeV

    collaboration, D., Bertram, I., Borissov, G., Fox, H., Williams, M., Ratoff, P., Love, P., Rakitin, A. & Sopczak, A., 14/05/2008, In: Physical review letters. 100, 19, 7 p., 192003.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  18. Published

    Search for excited electrons 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., 12/05/2008, In: Physical Review D. 77, 9, 8 p., 091102(R).

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  19. Published

    First measurement of the forward-backward charge asymmetry in top quark pair production

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Love, P., Rakitin, A., Ratoff, P., Sopczak, A. & Williams, M., 9/04/2008, In: Physical review letters. 100, 14, 7 p., 142002.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  20. Published

    Search for ZZ and Zγ^* production in p-barp collisions at sqrt(s) = 1.96 TeV and limits on anomalous ZZZ and ZZγ^* couplings

    Collaboration, D., Bertram, I., Borissov, G., Fox, H., Love, P., Rakitin, A., Ratoff, P., Sopczak, A. & Williams, M., 2/04/2008, In: Physical review letters. 100, 13, 7 p., 131801.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  21. Published

    Search for flavor-changing-neutral-current D meson decays

    Collaboration, D., Abazov, V., Bertram, I., Borissov, G., Fox, H., Love, P., Rakitin, A., Ratoff, P., Sopczak, A. & Williams, M., 14/03/2008, In: Physical review letters. 100, 10, 7 p., 101801.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  22. Published

    Measurement of the shape of the boson transverse momentum distribution in ppbar -> Z/gamma* -> ee+X events produced at sqrt{s}=1.96 TeV

    Collaboration, D., Abazov, V., Bertram, I., Borissov, G., Fox, H., Love, P., Rakitin, A., Ratoff, P., Sopczak, A. & Williams, M., 11/03/2008, In: Physical review letters. 100, 10, 7 p., 102002.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  23. Published

    Search for Randall-Sundrum gravitons with 1 fb-1 of data from ppbar collisions at sqrt(s)=1.96 TeV

    Collaboration, D., Abazov, V., Bertram, I., Borissov, G., Fox, H., Love, P., Rakitin, A., Ratoff, P., Sopczak, A. & Williams, M., 7/03/2008, In: Physical review letters. 100, 9, 7 p., 091802.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  24. Published

    Search for squarks and gluinos in events with jets and missing transverse energy using 2.1 fb-1 of ppbar collision data at sqrt(s)=1.96 TeV

    Collaboration, D., Abazov, V., Bertram, I., Borissov, G., Fox, H., Love, P., Rakitin, A., Ratoff, P., Sopczak, A. & Williams, M., 6/03/2008, In: Physics Letters B. 660, 5, p. 449-457 9 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  25. Published

    Observation and properties of the orbitally excited B_{s2}* Meson

    Collaboration, D., Abazov et al, V., Bertram, I., Borissov, G., Fox, H., Love, P., Rakitin, A., Ratoff, P., Sopczak, A. & Williams, M., 28/02/2008, In: Physical review letters. 100, 8, 7 p., 082002.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  26. Published

    Model-independent measurement of the W boson helicity in top quark decays

    Collaboration, D., M. Abazov, V., Bertram, I., Borissov, G., Fox, H., Love, P., Rakitin, A., Ratoff, P., Sopczak, A. & Williams, M., 14/02/2008, In: Physical review letters. 100, 6, 7 p., 062004.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  27. Published

    Search for Supersymmetry in Di-Photon Final States at sqrt{s} = 1.96 TeV

    D0 Collaboration, T., M. Abazov, V., Bertram, I., Borissov, G., Fox, H., Love, P., Rakitin, A., Ratoff, P., Sopczak, A. & Williams, M., 7/02/2008, In: Physics Letters B. 659, 5, p. 856-863 8 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  28. Published

    Search for the lightest scalar top quark in events with two leptons in p-pbar collisions at sqrt(s) = 1.96 TeV

    Collaboration, D., Abazov, V., Bertram, I., Borissov, G., Fox, H., Love, P., Rakitin, A., Ratoff, P., Sopczak, A. & Williams, M., 24/01/2008, In: Physics Letters B. 659, 3, p. 500-508 9 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  29. Published

    Search for W' bosons decaying to an electron and a neutrino with the D0 detector

    Collaboration, D., Abazov, V., Bertram, I., Borissov, G., Fox, H., Love, P., Rakitin, A., Ratoff, P., Sopczak, A. & Williams, M., 24/01/2008, In: Physical review letters. 100, 3, 7 p., 031804.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  30. Published

    Measurement of the muon charge asymmetry from W boson decays

    Collaboration, D., M. Abazov, V., Bertram, I., Borissov, G., Fox, H., Love, P., Rakitin, A., Ratoff, P., Sopczak, A. & Williams, M., 23/01/2008, In: Physical Review D. 77, 1, 8 p., 011106(R) .

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  31. Published

    Measurement of the ratios of the Z/G* + >= n jet production cross sections to the total inclusive Z/G* cross section in ppbar collisions at sqrt(s) = 1.96 TeV

    Collaboration, D., Abazov, V., Bertram, I., Borissov, G., Fox, H., Love, P., Rakitin, A., Ratoff, P., Sopczak, A. & Williams, M., 3/01/2008, In: Physics Letters B. 658, 4, p. 112-119 8 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  32. 2007
  33. Published

    Measurement of the p <span style='text-decoration: Measurement of the p[overline p]-->WZ+X cross section at sqrt(s)=1.96 TeV and limits on WWZ trilinear gauge couplings

    D0 Collaboration, 28/12/2007, In: Physical Review D. 76, 11, p. 111104 8 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  34. Published

    Study of the Decay B D D

    Collaboration, D., Abazov, V., Bertram, I., Borissov, G., Fox, H., Love, P., Ratoff, P., Sopczak, A. & Walder, J., 12/12/2007, In: Physical review letters. 99, 24, p. 241801 7 p., 241801.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  35. Published

    Progress with vertex detector sensors for the International Linear Collider.

    Worm, S., Banda, Y., Bowdery, C., Buttar, C., Clarke, P., Cussans, D., Damerell, C., Davies, G., Devetak, E., Fopma, J., Foster, B., Gaob, R., Gillman, A. R., Goldstein, J., Greenshaw, T., Grimes, M., Harder, K., Hawes, B., Heath, H., Hillert, S., & 17 othersJeffrey, B., Johnson, E., Kundu, N., Martin, V., Murray, P., Nichols, A., Nomerotski, A., O’Shea, V., Parkes, C., Perry, C., Woolliscroft, T., Sopczak, A., Stefanov, K., Thomas, S., Tikkaneng, T., Yang, S. & Zhang, Z., 1/12/2007, In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 582, 3, p. 839-842 4 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  36. Published

    Small visible energy scalar top iterative discriminant analysis.

    Sopczak, A., Finch, A. J., Freitas, A., Milstene, C. & Schmitt, M., 12/2007, In: Pramana. 69, 6, p. 995-999 5 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  37. Published

    Measurement of the t[overline t] production cross section in p[overline p] collisions at sqrt(s)=1.96 TeV using kinematic characteristics of lepton+jets events

    Abazov, V. M., Bertram, I., Borissov, G., Fox, H., Ratoff, P. & Sopczak, A., 27/11/2007, In: Physical Review D. 76, p. 092007

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  38. Published

    Search for a Higgs boson produced in association with a Z boson in p <span style='text-decoration: overline'></span>p collisions}.

    Abazov, V. M., Bertram, I., Borissov, G., Fox, H., Ratoff, P. & Sopczak, A., 8/11/2007, In: Physics Letters B. 655, 5-6, p. 209-216 8 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  39. Published

    Search for Production of Single Top Quarks Via tcg and tug Flavor-Changing-Neutral-Current Couplings

    Abazov, V. M., Bertram, I., Borissov, G., Fox, H., Ratoff, P. & Sopczak, A., 6/11/2007, In: Physical review letters. 99, p. 191802

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  40. Published

    Search for B<sub>s</sub> → μ<sup></sup>+ μ<sup>-</sup> at D0}.

    Abazov, V. M., Bertram, I., Borissov, G., Fox, H., Ratoff, P. & Sopczak, A., 5/11/2007, In: Physical Review D. 76, p. 092001

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  41. Published

    Scalar top study: Detector optimization.

    Milstene, C. & Sopczak, A., 11/2007, In: Pramana. 69, 5, p. 921-926 6 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  42. Published

    Measurement of the top quark mass in the dilepton channel.

    Sopczak, A., Bertram, I., Borissov, G., Fox, H. & Ratoff, P., 25/10/2007, In: Physics Letters B. 655, 1-2, p. 7-14 8 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  43. Published

    Measurement of the Λ<sub>b</sub> lifetime in the exclusive decay Λ<sub>b</sub> → J/ψ Λ.

    Abazov, V. M., Bertram, I., Borissov, G., Fox, H., Ratoff, P. & Sopczak, A., 1/10/2007, In: Physical review letters. 99, p. 142001

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  44. Published

    Study of multi-muon bundles in cosmic ray showers detected with the DELPHI detector at LEP.

    Abdallah, J., Sopczak, A. & DELPHI Collaboration, E. A., 10/2007, In: Astroparticle Physics. 28, 2, p. 273-286 14 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  45. Published

    Measurement of the t <span style='text-decoration: overline'></span>t production cross-section in p <span style='text-decoration: overline'>p</span> collisions using dilepton events}.

    Abazov, V. M., Bertram, I., Borissov, G., Fox, H., Ratoff, P. & Sopczak, A., 28/09/2007, In: Physical Review D. 76, p. 052006

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  46. Published

    Z γ production and limits on anomalous Z Z γ and Z γ γ couplings in p<span style='text-decoration: overline'></span>p collisions at √<span style='text-decoration: overline'>s</span> = 1.96- TeV}.

    Abazov, V. M., Bertram, I., Borissov, G., Fox, H., Ratoff, P. & Sopczak, A., 27/09/2007, In: Physics Letters B. 653, 5-6, p. 378-386 9 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  47. Published

    Search for stopped gluinos from p<span style='text-decoration: overline'></span>p collisions at √<span style='text-decoration: overline'>s</span> = 1.96-TeV}.

    Abazov, V. M., Bertram, I., Borissov, G., Fox, H., Ratoff, P. & Sopczak, A., 24/09/2007, In: Physical review letters. 99, p. 131801

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  48. Published

    Search for Pentaquarks in the Hadronic Decays of the Z Boson with the DELPHI Detector at LEP.

    Abdallah, J., Sopczak, A. & DELPHI Collaboration, E. A., 20/09/2007, In: Physics Letters B. 653, 2-4, p. 151-160 10 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  49. Published

    Combined D0 measurements constraining the CP-violating phase and width difference in the B/s0 system.

    Abazov, V. M., Bertram, I., Borissov, G., Fox, H., Ratoff, P. & Sopczak, A., 17/09/2007, In: Physical Review D. 76, p. 057101

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  50. Published

    Search for third-generation leptoquarks in p <span style='text-decoration: overline'></span>p collisions at √<span style='text-decoration: overline'>s</span> = 1.96-TeV}.

    Abazov, V. M., Bertram, I., Borissov, G., Fox, H., Ratoff, P. & Sopczak, A., 6/08/2007, In: Physical review letters. 99, p. 061801

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  51. Published

    Simulations of the Temperature Dependence of the Charge Transfer Inefficiency in a High-Speed CCD.

    Sopczak, A., Bekhouche, K., Bowdery, C., Damerell, C., Davies, G., Dehimi, L., Greenshaw, T., Koziel, M., Stefanov, K., Walder, J., Woolliscroft, T. & Worm, S., 08/2007, In: IEEE Transactions on Nuclear Science. 54, 4, p. 1429-1434 6 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  52. Published

    Study of triple-gauge-boson couplings ZZZ, ZZgamma and Zgamma gamma LEP.

    Abdallah, J., Sopczak, A. & The DELPHI Collaboration, E. A., 08/2007, In: European Physical Journal C: Particles and Fields. 51, 3, p. 525-542 18 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

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