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Dr Andre Sopczak

Formerly at Lancaster University

  1. 2003
  2. Published

    Exploring supersymmetry at a future global E+ E- linear collider.

    Sopczak, A., 2003, Proceedings of the SUSY 11th annual international conference on supersymmetry and the unification of fundamental interactions. Tuscon, Arizona

    Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSNChapter

  3. Published

    The Higgs working group: summary report 2003

    Assamagan, K. A., Narain, M. & Sopczak, A., 2003, Proceedings of the 3rd Les Houches workshop: physics at TeV colliders. France: Les Houches

    Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSNChapter

  4. Published

    The P anti-P --->TBH+- process at the tevatron in herwig and pythia simulations, TSL-ISV-2003-0274, SHEP-03-38.

    Alwall, J., Biscarat, C., Moretti, S., Rathsman, J. & Sopczak, A., 05/2003, Proceedings of the 3rd Les Houches workshop: physics at TeV colliders. France: Les Houches

    Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSNChapter

  5. Published

    Search for the Standard Model Higgs boson at LEP.

    ALEPH Collaboration, ., Heister, A., Bouhova-Thacker, E. V., Finch, A. J., Hughes, G., Jones, R., Smizanska, M., Clarke, D. P., Ellis, G. . E. A., DELPHI Collaboration, ., Abdallah, J., Sopczak, A., Borissov, G. . E. A., L3 Collaboration, ., OPAL Collaboration, ., Abbiendi, G., Kartvelishvili, V. . E. A. & LEP Working Group, ., 17/07/2003, In: Physics Letters B. 565, p. 61-75 15 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  6. Published

    Study of inclusive J/ψ production in two-photon collisions at LEP II with the DELPHI detector.

    DELPHI Collaboration, ., Abdallah, J., Sopczak, A. & Borrisov, G. . E. A., 17/07/2003, In: Physics Letters B. 565, p. 76-86 11 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  7. Published

    Measurement of inclusive f1(1285) and f1(1420) production in Z decays with the DELPHI detector.

    DELPHI Collaboration, ., Abdallah, J., Sopczak, A. & Borrisov, G. . E. A., 11/09/2003, In: Physics Letters B. 569, 3-4, p. 129-139 11 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  8. Published

    ZZ production in e + e - interactions at S**(1/2)=183-209 GeV.

    DELPHI Collaboration, ., Abdallah, J., Sopczak, A. & Borrisov, G. . E. A., 4/10/2003, In: European Physical Journal C: Particles and Fields. 30, 4, p. 447-466 20 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  9. Published

    Measurement of the e+ e- ---> W+ W- gamma cross-section and limits on anomalous quartic gauge couplings with DELPHI.

    DELPHI Collaboration, ., Abdallah, J., Sopczak, A. & Borrisov, G. . E. A., 11/2003, In: European Physical Journal C: Particles and Fields. 31, 2, p. 139-147 9 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  10. Published

    The ηc(2980) formation in two-photon collisions at LEP energies.

    DELPHI Collaboration, ., Abdallah, J., Sopczak, A. & Borrisov, G. . E. A., 12/2003, In: European Physical Journal C: Particles and Fields. 31, 4, p. 481-489 9 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  11. Published

    A measurement of the branching fractions of the b-quark into charged and neutral b-hadrons.

    DELPHI Collaboration, ., Abdallah, J., Abreu, P., Adam, W., Adzic, P., Albrecht, T., Alderweireld, T., Alemany-Fernandez, R., Allmendinger, T., Allport, P. P., Amaldi, U., Amapane, N., Amato, S., Anashkin, E., Andreazza, A., Andringa, S., Anjos, N., Antilogus, P., Apel, W. -D., Arnoud, Y., & 1 othersSopczak, A. . E. A., 2/12/2003, In: Physics Letters B. 756, 1-2, p. 29-42 14 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  12. 2004
  13. Published

    Searches for Higgs bosons beyond the standard model.

    Sopczak, A., 2004, Contribution to the XII Workshop on Deep Inelastic Scattering, DIS'2004, High Tatras, Slovakia, 14-18 April 2004. High Tatras, Slovakia

    Research output: Contribution in Book/Report/Proceedings - With ISBN/ISSNChapter

  14. Published

    Measurement of |V(cb)| using the semileptonic decay anti-B/d0 ! D*+1- anti-nu/1.

    DELPHI Collaboration, T., Borisov, G. & Sopczak, A., 03/2004, In: European Physical Journal C: Particles and Fields. 33, 2, p. 213-232 20 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  15. Published

    The measurement of alpha(s) from event shapes with the DELPHI detector at the highest LEP energies.

    DELPHI Collaboration, T., Borisov, G. & Sopczak, A., 09/2004, In: European Physical Journal C: Particles and Fields. 37, 1, p. 1-23 23 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  16. Published

    Search for Doubly Charged Higgs Boson Pair Production in the Decay to μ+μ+μ-μ- in pp̅ Collisions at √s=1.96  TeV

    D0 Collaboration, T., Bertram, I. A., Borissov, G., Ratoff, P. N., Sopczak, A., Davies, B. & Doidge, M., 27/09/2004, In: Physical review letters. 93, 14, p. 141801 8 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  17. Published

    Observation and properties of the X(3872) decaying to J/psi pi+ pi- in p anti-p collitions at s**(1/2) = 1.96-TeV.

    D0 Collaboration, T., Bertram, I. A., Borissov, G., Ratoff, P. N., Sopczak, A., Davies, B. & Doidge, M., 14/10/2004, In: Physical review letters. 93, 16, p. 162002

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  18. Published

    Determination of the e+ e- ! Gamma (gamma) cross-section at LEP 2.

    DELPHI Collaboration, T., Borisov, G. & Sopczak, A., 11/2004, In: European Physical Journal C: Particles and Fields. 37, 4, p. 405-419 15 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  19. Published

    Searches for neutral Higgs bosons in extended models.

    DELPHI Collaboration, T., Borissov, G. & Sopczak, A., 12/2004, In: European Physical Journal C: Particles and Fields. 38, 1, p. 1-28 28 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  20. 2005
  21. Published

    Highlights of Higgs physics at LEP

    Sopczak, A., 2005, In: Fizika Elementarnykh Chastits i Atomnogo Yadra / Physics of Particles and Nuclei. 36, 1, p. 65

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  22. Published

    Measurement of the energy dependence of hadronic jet rates and the strong coupling asαs from the four-jet rate with the DELPHI detector at LEP

    DELPHI Collaboration, T., Borissov, G. V. & Sopczak, A., 01/2005, In: European Physical Journal C: Particles and Fields. 38, 4, p. 413-426 14 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  23. Published

    Coherent soft particle production in Z decays into three jets

    DELPHI Collaboration, T., Borissov, G. V. & Sopczak, A., 6/01/2005, In: Physics Letters B. 605, 1-2, p. 37-48 12 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  24. Published

    Measurement of the top quark mass in all-jet events

    DO Collaboration, T., Bertram, I. A., Borissov, G. V., Ratoff, P. N. & Sopczak, A., 20/01/2005, In: Physics Letters B. 606, 1-2, p. 25-33 9 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  25. Published

    The P anti-P---> TBH+- process at the tevatron in herwig and pythia simulations : a contribution to the 3rd Les Houches workshop: physics at TeV colliders held in Les Houches, France in May-June 2003.

    Alwall, J., Biscarat, C., Moretti, S., Rathsman, J. & Sopczak, A., 02/2005, In: European Physical Journal C: Particles and Fields. 39, Supple, p. 37-39 3 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  26. Published

    The p¯p → tbH± process at the Tevatron in HERWIG and PYTHIA simulations

    Alwall, J., Biscarat, C., Moretti, S., Rathsman, J. & Sopczak, A., 02/2005, In: European Physical Journal C: Particles and Fields. 39, Supple, p. 37-39 3 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  27. Published

    Measurement of the B0s Lifetime in the Exclusive Decay Channel B0s ! J=

    DO Collaboration, T., Bertram, I. A., Borissov, G. V., Ratoff, P. N. & Sopczak, A., 4/02/2005, In: Physical review letters. 94, 4, p. 042001

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  28. Published

    Search for Supersymmetry with Gauge-Mediated Breaking in Diphoton Events at D0

    DO Collaboration, T., Bertram, I. A., Borissov, G. V., Ratoff, P. N. & Sopczak, A., 4/02/2005, In: Physical review letters. 94, 4, p. 041801

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  29. Published

    Search for the Flavor-Changing Neutral Current Decay Bs0→μ+μ- in pp̅ Collisions at √s=1.96   TeV with the D0 Detector

    DO Collaboration, T., Bertram, I. A., Borissov, G. V., Ratoff, P. N. & Sopczak, A., 25/02/2005, In: Physical review letters. 94, 7, p. 071802 7 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  30. Published

    Determination of AFBb at the Z pole using inclusive charge reconstruction and lifetime tagging

    DELPHI Collaboration, T., Borissov, G. V. & Sopczak, A., 03/2005, In: European Physical Journal C: Particles and Fields. 40, 1, p. 1-25 25 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  31. Published

    Search for Wb and WH Production in p Collisions at =1.96 TeV

    DO Collaboration, T., Bertram, I. A., Borissov, G. V., Ratoff, P. N. & Sopczak, A., 11/03/2005, In: Physical review letters. 94, 9, p. 091802

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  32. Published

    Measurement of sigma(p[overline p]-->Z)·Br(Z-->tautau) at sqrt(s)=1.96 TeV

    DO Collaboration, T., Bertram, I. A., Borissov, G. V., Ratoff, P. N. & Sopczak, A., 04/2005, In: Physical Review D. 71, 7, p. 072004

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  33. Published

    Search for first-generation scalar leptoquarks in p[overline p] collisions at sqrt(s)=1.96 TeV

    DO Collaboration, T., Bertram, I. A., Borissov, G. V., Ratoff, P. N. & Sopczak, A., 1/04/2005, In: Physical Review D. 71, 7, p. 071104

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  34. Published

    Measurement of the WW Production Cross Section in pp Collisions at ps1:96 TeV

    DO Collaboration, T., Bertram, I. A., Borissov, G. V., Ratoff, P. N. & Sopczak, A., 22/04/2005, In: Physical review letters. 94, 15, p. 151801

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  35. Published

    Search for Anomalous Heavy-Flavor Quark Production in Association with W Bosons

    DO Collaboration, T., Bertram, I. A., Borissov, G. V., Ratoff, P. N. & Sopczak, A., 22/04/2005, In: Physical review letters. 94, 15, p. 152002

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  36. Published

    Measurement of the Ratio of Inclusive Cross Sections (pZ+b jet)/(pZ+jet) at =1.96 TeV

    DO Collaboration, T., Bertram, I. A., Borissov, G. V., Ratoff, P. N. & Sopczak, A., 29/04/2005, In: Physical review letters. 94, 16, p. 161801

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  37. Published

    Measurement of the p[overline p]-->Wgamma+X cross section at sqrt(s)=1.96 TeV and WWgamma anomalous coupling limits

    DO Collaboration, T., Bertram, I. A., Borissov, G. V., Ratoff, P. N. & Sopczak, A., 05/2005, In: Physical Review D. 71, 9, p. 091108

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  38. Published

    Measurement of the Ratio of B+ and B0 Meson Lifetimes

    Ratoff, P. N., Bertram, I., Borissov, G., Fox, H. & Sopczak, A., 13/05/2005, In: Physical review letters. 94, 18, 7 p., 182001 .

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  39. Published

    Measurement of Dijet Azimuthal Decorrelations at Central Rapidities in p Collisions at =1.96 TeV

    DO Collaboration, T., Bertram, I. A., Borissov, G. V., Ratoff, P. N. & Sopczak, A., 10/06/2005, In: Physical review letters. 94, 22, p. 221801

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  40. Published

    Measurement of Inclusive Differential Cross Sections for 1S Production in pp Collisions at ps 1:96 TeV

    DO Collaboration, T., Bertram, I. A., Borissov, G. V., Ratoff, P. N. & Sopczak, A., 17/06/2005, In: Physical review letters. 94, 23, p. 232001

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  41. Published

    Helicity of the W boson in lepton +jets t ¯t events

    DO Collaboration, T., Bertram, I. A., Borissov, G. V., Ratoff, P. N. & Sopczak, A., 26/06/2005, In: Physics Letters B. 617, 1-2, p. 1-10 10 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  42. Published

    Search for right-handed W bosons in top quark decay

    DO Collaboration, T., Bertram, I. A., Borissov, G. V., Ratoff, P. N. & Sopczak, A., 1/07/2005, In: Physical Review D. 72, 1, p. 011104

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  43. Published

    Study of Z Events and Limits on Anomalous ZZ and Z Couplings in p Collisions at =1.96 TeV

    DO Collaboration, T., Bertram, I. A., Borissov, G. V., Ratoff, P. N. & Sopczak, A., 29/07/2005, In: Physical review letters. 95, 5, p. 051802

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  44. Published

    Search for Randall-Sundrum Gravitons in Dilepton and Diphoton Final States

    DO Collaboration, T., Bertram, I. A., Borissov, G. V., Ratoff, P. N. & Sopczak, A., 26/08/2005, In: Physical review letters. 95, 9, p. 091801

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  45. Published

    Production of WZ Events in pp Collisions at ps 1:96 TeV and Limits on Anomalous WWZ Couplings

    DO Collaboration, T., Bertram, I. A., Borissov, G. V., Ratoff, P. N. & Sopczak, A., 30/09/2005, In: Physical review letters. 95, 14, p. 141802

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  46. Published

    Bose-Einstein Correlations in W+W− events at LEP2

    DELPHI Collaboration, T., Borissov, G. V. & Sopczak, A., 10/2005, In: European Physical Journal C: Particles and Fields. 44, 2, p. 161-174 14 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  47. Published

    Charged particle multiplicity in three-jet events and two-gluon systems

    DELPHI Collaboration, T., Borissov, G. V. & Sopczak, A., 10/2005, In: European Physical Journal C: Particles and Fields. 44, 3, p. 311-331 21 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  48. Published

    Production of Ξ0c and Ξb in Z decays and lifetime measurement of Ξb

    DELPHI Collaboration, T., Borissov, G. V. & Sopczak, A., 10/2005, In: European Physical Journal C: Particles and Fields. 44, 3, p. 299-309 11 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  49. Published

    Search for Neutral Supersymmetric Higgs Bosons in Multijet Events at =1.96 TeV

    DO Collaboration, T., Bertram, I. A., Borissov, G. V., Ratoff, P. N. & Sopczak, A., 7/10/2005, In: Physical review letters. 95, 15, p. 151801

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  50. Published

    Search for Supersymmetry via Associated Production of Charginos and Neutralinos in Final States with Three Leptons

    DO Collaboration, T., Bertram, I. A., Borissov, G. V., Ratoff, P. N. & Sopczak, A., 7/10/2005, In: Physical review letters. 95, 15, p. 151805

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  51. Published

    Search for Large Extra Spatial Dimensions in Dimuon Production with the D0 Detector

    DO Collaboration, T., Bertram, I. A., Borissov, G. V. & Sopczak, A., 14/10/2005, In: Physical review letters. 95, 16, p. 161602

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  52. Published

    Measurement of Semileptonic Branching Fractions of B Mesons to Narrow D** States

    DO Collaboration, T., Bertram, I. A., Borissov, G. V., Ratoff, P. N. & Sopczak, A., 18/10/2005, In: Physical review letters. 95, 17, p. 171803

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

  53. Published

    Measurement of the t t¯ production cross section in pp¯ collisions at √s = 1.96 TeV in dilepton final states

    DO Collaboration, T., Bertram, I. A., Borissov, G. V., Ratoff, P. N. & Sopczak, A., 20/10/2005, In: Physics Letters B. 626, 1-4, p. 55-64 10 p.

    Research output: Contribution to Journal/MagazineJournal articlepeer-review

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