Theoretical particle physics Geographically: 2 groups, Bergen & Oslo

Bergen, October 19, 2005

Bergen 2005:

• Per Osland

PhD students: Abdul Wahab El Kaffas (Egyptian scholarship)

• • Are Raklev (NFR/not CERN) • Alexander Vereshagin (Quota Program)

Okan Camursoy (Ankara - Cultural Exchange program) No master student!

Recent student history (& funding): 2005: PhD: Gjelsten (Oslo University) MSc: Sæther, Solberg, Elgammal 2004: PhD: Dvergsnes (NFR/CERN) MSc: Nyre, Wold Nilsen, Groth-Pedersen, Nybø 2003: PhD: Khater (Quota program) MSc: Buanes 2002: PhD: MSc:Vereshagin, Myklevoll 2001: PhD: Saks (Quota program),Vigdel (private) MSc:

time

PhD Topics • QCD vertex functions (Saks) • Neutrino physics (Vigdel) • CP violation in 2HDM/LHC (Khater) • Extra dimensions (Dvergsnes) • SUSY phenomenology (Gjelsten)

Selected Papers (Bergen) 2) RESOLVING AMBIGUITIES IN MASS DETERMINATIONS AT FUTURE COLLIDERS. By B.K. Gjelsten (Oslo U. & Bern U.), D.J. Miller (Glasgow U.), P. Osland (Bergen U.),. CERN-PH-TH-2005-120, Jul 2005. 6pp. To appear in the proceedings of 2005 International Linear Collider Workshop (LCWS 2005), Stanford, California, 18-22 Mar 2005. e-Print Archive: hep-ph/0507232 3) POSITRON POLARIZATION AT THE INTERNATIONAL LINEAR COLLIDER. By P. Osland (CERN & Bergen U.), N. Paver (Trieste U. & INFN, Trieste),. CERN-PH-TH-2005-127, Jul 2005. 6pp. Invited talk at 2005 International Linear Collider Workshop (LCWS 2005), Stanford, California, 18-22 Mar 2005. e-Print Archive: hep-ph/0507185 4) THE ROLE OF POLARIZED POSITRONS AND ELECTRONS IN REVEALING FUNDAMENTAL INTERACTIONS AT THE LINEAR COLLIDER. G. Moortgat-Pick et al.. SLAC-PUB-11087, CERN-PH-TH-2005-036, DESY-05-059, FERMILAB-PUB-05-060-T, IPPP-04-50, KEK-2005 -16, PRL-TH-05-01, SHEP-05-03, Jul 2005. 149pp. e-Print Archive: hep-ph/0507011 6) MEASUREMENT OF THE GLUINO MASS VIA CASCADE DECAYS FOR SPS 1A. By B.K. Gjelsten (Oslo U.), D.J. Miller (Glasgow U.), P. Osland (Bergen U.),. ATL-PHYS-2005-001, Jan 2005. 37pp. Published in JHEP 0506:015,2005 e-Print Archive: hep-ph/0501033 8) PHYSICS INTERPLAY OF THE LHC AND THE ILC. By LHC/LC Study Group (G. Weiglein et al.). SLAC-PUB-10764, ANL-HEP-PR-04-108, CERN-PH-TH-2004-214, DCPT-04-134, DESY -04-206, IFIC-04-59, IISC-CHEP-13-04, IPPP-04-67, UB-ECM-PF-04-31, UCD-04-28, UCI-TR-2004-37, Oct 2004. 472pp. Submitted to Phys.Rept. e-Print Archive: hep-ph/0410364 9) MEASUREMENT OF SUSY MASSES VIA CASCADE DECAYS FOR SPS 1A. By B.K. Gjelsten (Oslo U.), D.J. Miller (Glasgow U. & Edinburgh U.), P. Osland (Bergen U.),. ATL-PHYS-2004-029, EDINBURGH-2004 -12, Oct 2004. 57pp. Published in JHEP 0412:003,2004 e-Print Archive: hep-ph/0410303

11) GRAVITON INDUCED BREMSSTRAHLUNG AT E+ E- COLLIDERS. By Trygve Buanes, Erik W. Dvergsnes, Per Osland (Bergen U.),. Mar 2004. 23pp. Published in Eur.Phys.J.C35:555-566,2004 e-Print Archive: hep-ph/0403267 12) CENTER EDGE ASYMMETRY AT HADRON COLLIDERS. By E.W. Dvergsnes, P. Osland (Bergen U.), A.A. Pankov (Gomel State Tech. U. & Trieste U. & INFN, Trieste), N. Paver (Trieste U. & INFN, Trieste),. Jan 2004. 23pp. Published in Phys.Rev.D69:115001,2004 e-Print Archive: hep-ph/0401199 14) DISCRIMINATING GRAVITON EXCHANGE EFFECTS FROM OTHER NEW PHYSICS SCENARIOS IN E+ E- COLLISIONS. By P. Osland (Bergen U.), A.A. Pankov (Bergen U. & Gomel State Tech. U. & Trieste U. & INFN, Trieste), N. Paver (Trieste U. & INFN, Trieste),. Apr 2003. 18pp. Published in Phys.Rev.D68:015007,2003 e-Print Archive: hep-ph/0304123 15) CP VIOLATION IN TOP QUARK PRODUCTION AT THE LHC AND TWO HIGGS DOUBLET MODELS. By Wafaa Khater, Per Osland (Bergen U.),. Feb 2003. 33pp. Published in Nucl.Phys.B661:209-234,2003 e-Print Archive: hep-ph/0302004 16) MODEL INDEPENDENT CONSTRAINTS ON CONTACT INTERACTIONS FROM LEP-2 DATA ANALYSIS. By A.A. Babich (Gomel State Tech. U. & ICTP, Trieste), G. Della Ricca (Trieste U. & INFN, Trieste), J. Holt (CERN), P. Osland (Bergen U.), A.A. Pankov (Gomel State Tech. U. & Trieste U. & INFN, Trieste), N. Paver (Trieste U. & INFN, Trieste),. Dec 2002. 12pp. Published in Eur.Phys.J.C29:103-109,2003 e-Print Archive: hep-ph/0212163 19) NEUTRINO MASSES FROM UNIVERSAL FERMION MIXING. By R. Gastmans (Leuven U.), Per Osland (Bergen U.), Tai Tsun Wu (Harvard U. & CERN),. CERN-TH-2002-202, KUL-TF-02-20, Oct 2002. 27pp. Published in Phys.Rev.D67:053005,2003 e-Print Archive: hep-ph/0210260 20) GRAVITON INDUCED BREMSSTRAHLUNG. By Erik Dvergsnes, Per Osland (Bergen U.), Nurcan Ozturk (Bergen U. & Texas U., Arlington),. Jul 2002. 19pp. Published in Phys.Rev.D67:074003,2003 e-Print Archive: hep-ph/0207221

22) NEUTRINOLESS DOUBLE BETA DECAY, SOLAR NEUTRINOS AND MASS SCALES. By Per Osland, Geir Vigdel (Bergen U.),. Jul 2001. 14pp. Published in Phys.Lett.B520:143-151,2001 e-Print Archive: hep-ph/0107161 23) NEW PHYSICS SIGNATURES AT A LINEAR COLLIDER: MODEL INDEPENDENT ANALYSIS FROM `CONVENTIONAL' POLARIZED OBSERVABLES. By A.A. Babich (Gomel State Tech. U.), P. Osland (Bergen U.), A.A. Pankov (Gomel State Tech. U. & Trieste U. & ICTP, Trieste & INFN, Trieste), N. Paver (ICTP, Trieste),. IC-2001-073, IC-2001-73, Jul 2001. 13pp. Published in Phys.Lett.B518:128-136,2001 e-Print Archive: hep-ph/0107159 24) TESLA: THE SUPERCONDUCTING ELECTRON POSITRON LINEAR COLLIDER WITH AN INTEGRATED X-RAY LASER LABORATORY. TECHNICAL DESIGN REPORT. PART 3. PHYSICS AT AN E+ E- LINEAR COLLIDER. By ECFA/DESY LC Physics Working Group (J.A. Aguilar-Saavedra et al.). SLAC-REPRINT-2001-002, DESY-01-011, DESY-2001-011, DESY-01-011C, DESY-2001-011C, DESY-TESLA-2001-23, DESY-TESLA-FEL-2001-05, ECFA-2001-209, Mar 2001. 192pp. e-Print Archive: hep-ph/0106315 25) QUARK MASS DEPENDENCE OF THE ONE LOOP THREE GLUON VERTEX IN ARBITRARY DIMENSION. By Andrei I. Davydychev (Mainz U., Inst. Phys.), P. Osland, L. Saks (Bergen U.),. MZ-TH-01-14, May 2001. 21pp. Published in JHEP 0108:050,2001 e-Print Archive: hep-ph/0105072 27) PERTURBATIVE ASPECTS OF Q DEFORMED DYNAMICS. By Jian-zu Zhang (Kaiserslautern U. & Bergen U. & East China Inst. Theor. Phys.), Per Osland (Bergen U.),. Feb 2001. 10pp. Published in Eur.Phys.J.C20:393-396,2001 e-Print Archive: hep-th/0102014 29) POTENTIAL OF PHOTON COLLIDER IN RESOLVING SM LIKE SCENARIOS. By Ilya F. Ginzburg (Sobolev IM, Novosibirsk), Maria Krawczyk (Warsaw U.), Per Osland (Bergen U.),. Jan 2001. 9pp. Published in Nucl.Instrum.Meth.A472:149-154,2001 e-Print Archive: hep-ph/0101229

Recent work (Gjelsten) squark decay at the LHC

Goal: determine masses of SUSY particles with high precision

Consider invariant mass distributions

Kinematical endpoints determined by sparticle masses

Four endpoints and four masses:

Sample distributions (PYTHIA+ATLFAST) Benchmark point SPS 1a:

Spread

black: correct solution red: mass differences blue-green: false solution (area prop to probability)

Mass uncertainties: 4-6 GeV @ SPS1a

Oslo 2005:

• Jan Olav Eeg • Hallstein Høgåsen • Carsten Lutken PhD•students: • Aksel Hiorth (2003, NFR/not CERN) • Håkon Enger (2005, Univ. Oslo)

Selected Papers (Oslo) 1) NON-FACTORIZABLE CONTRIBUTIONS TO BAR B^0_D --> D_S^ (*) BAR D_S^ (*) FROM CHIRAL LOOPS AND TREE LEVEL 1/N_C TERMS. By J.O. Eeg, S. Fajfer, A.Prapotnik Brdnik. Sep 2005. 7pp. ** Temporary entry ** e-Print Archive: hep-ph/0509252 2) SOFT GLUON CONTRIBUTIONS TO THE B ---> K ETA-PRIME AMPLITUDE IN A LOW ENERGY BOSONIZATION MODEL. By Jan O. Eeg (Oslo U.), Kresimir Kumericki (Oslo U. & Zagreb U.), Ivica Picek (Zagreb U.),. OSLO-TP-2-05, ZAGREB-ATF-05-01, Jun 2005. 10pp. e-Print Archive: hep-ph/0506152 3) COLOR SUPPRESSED CONTRIBUTIONS TO THE DECAY MODES B(D,S) ---> D(S,D)D(S,D), B(D,S) ---> D(S,D)D*(S,D), AND B(D,S) ---> D*(S,D)D*(S,D). By Jan O. Eeg (Oslo U.), Svjetlana Fajfer (Ljubljana U. & Stefan Inst., Ljubljana), Anita Prapotnik (Stefan Inst., Ljubljana),. Jan 2005. 15pp. Published in Eur.Phys.J.C42:29-36,2005 e-Print Archive: hep-ph/0501031 5) COLOURED S-WAVE QUARK CLUSTERS WITH FLAVOR SYMMETRY BREAKING. By H. Hogaasen (Oslo U.), P. Sorba (Annecy, LAPTH),. LAPTH-1074-04, Sep 2004. 15pp. e-Print Archive: hep-ph/0410224 6) NON-FACTORIZABLE CONTRIBUTIONS TO ANTI-B0(D) ---> D(*)(S) ANTI-D(*)(S). By J.O. Eeg (Oslo U.), S. Fajfer (Stefan Inst., Ljubljana & Ljubljana U.), A. Hiorth (Rogaland Res., Stavanger), A. Prapotnik (Stefan Inst., Ljubljana),. Aug 2004. 4pp. Presented at 6th International Conference on Hyperons, Charm and Beauty Hadrons (BEACH 2004), Chicago, Illinois, 27 Jun - 3 Jul 2004. Published in Nucl.Phys.Proc.Suppl.142:188-191,2005 Also in *Chicago 2004, Hyperons, charm and beauty hadrons* 188-191 e-Print Archive: hep-ph/0408298 7) ON THE SINGLET PENGUIN IN B ---> K ETA-PRIME DECAY. By Jan Olav Eeg (Oslo U.), Kresimir Kumericki, Ivica Picek (Zagreb U.),. Jul 2004. 5pp. To appear in the proceedings of 9th Adriatic Meeting, Dubrovnik, Croatia, 4-14 Sep 2003. Published in *Dubrovnik 2003, Particle physics and the universe* 465-468 e-Print Archive: hep-ph/0407279

8) THE COLOUR TRIPLET QQ ANTI-Q CLUSTER AND PENTAQUARK MODELS. By H. Hogaasen (Oslo U.), P. Sorba (Annecy, LAPTH),. LAPTH-1048-04, May 2004. 9pp. Published in Mod.Phys.Lett.A19:2403-2410,2004 e-Print Archive: hep-ph/0406078 9) FINE GRAINED ENTANGLEMENT LOSS ALONG RENORMALIZATION GROUP FLOWS. By J.I. Latorre (Barcelona U., ECM), C.A. Lutken (Oslo U.), E. Rico (Barcelona U., ECM), G. Vidal (Caltech, IQI),. Apr 2004. 5pp. Published in Phys.Rev.A71:034301,2005 e-Print Archive: quant-ph/0404120 10) NONLINEAR YANG-MILLS INSTANTONS FROM STRINGS ARE PI STABLE D-BRANES. By H. Enger, C.A. Lutken (Oslo U.),. Dec 2003. 12pp. Published in Nucl.Phys.B695:73-83,2004 e-Print Archive: hep-th/0312254 11) B DECAYS AND B ANTI-B MIXING WITHIN A HEAVY LIGHT CHIRAL QUARK MODEL. By Jan O. Eeg (Oslo U.),. WQCD-2003-024, Oct 2003. 8pp. Talk given at QCD @ Work 2003: 2nd International Workshop on Quantum Chromodynamics: Theory and Experiment, Conversano, Italy, 14-18 Jun 2003. Published in eConf C030614:024,2003 Also in *Conversano 2003, QCD at work 2003* 171-178 e-Print Archive: hep-ph/0310179 13) ON THE SHORT DISTANCE PART OF THE QCD ANOMALY CONTRIBUTION TO THE B ---> S ETA-PRIME AMPLITUDE. By Jan O. Eeg (Oslo U.), Kresimir Kumericki, Ivica Picek (Zagreb U.),. OSLO-TP-2-03, ZAGREB-ZFT-03-01, Apr 2003. 11pp. Published in Phys.Lett.B563:87-92,2003 e-Print Archive: hep-ph/0304274 14) THE BETA TERM FOR D* ---> D GAMMA WITHIN A HEAVY LIGHT CHIRAL QUARK MODEL. By A. Hiorth, J.O. Eeg (Oslo U.),. Apr 2003. 16pp. Published in Eur.Phys.J.C39S1:27-35,2005 e-Print Archive: hep-ph/0304247 15) ON THE COLOR SUPPRESSED DECAY MODES ANTI-B0 ---> D+(S) D-(S) AND ANTI-B0(S) ---> D+ D-. By J.O. Eeg (Oslo U.), S. Fajfer (Ljubljana U. & Stefan Inst., Ljubljana), A. Hiorth (Oslo U.),. Apr 2003. 13pp. Published in Phys.Lett.B570:46-52,2003 e-Print Archive: hep-ph/0304112

16) NONFACTORIZABLE EFFECTS IN B - ANTI-B MIXING. By A. Hiorth, J.O. Eeg (Oslo U.),. Jan 2003. 23pp. Published in Eur.Phys.J.direct C30:006,2003, Eur.Phys.J.C32S1:69-90,2004 e-Print Archive: hep-ph/0301118 17) A HEAVY LIGHT CHIRAL QUARK MODEL. By A. Hiorth, J.O. Eeg (Oslo U.),. Jun 2002. 32pp. Published in Phys.Rev.D66:074001,2002 e-Print Archive: hep-ph/0206158 18) QUARK QUARK CORRELATIONS AND BARYON ELECTROWEAK OBSERVABLES. By H. Hogaasen (Oslo U.), Kuniharu Kubodera, Fred Myhrer (South Carolina U.),. Apr 2002. 7pp. Published in Phys.Rev.D66:057501,2002 e-Print Archive: hep-ph/0204272 21) A GLUONIC MECHANISM FOR B ---> D ETA-PRIME. By J.O. Eeg (CERN & Oslo U.), A. Hiorth (Oslo U.), A.D. Polosa (Helsinki U.),. CERN-TH-2001-250, OSLO-TP-6-01, HIP-2001-49-TH, Sep 2001. 17pp. Published in Phys.Rev.D65:054030,2002 e-Print Archive: hep-ph/0109201 22) NONFACTORIZABLE CONTRIBUTIONS TO THE DECAY MODE D0 ---> K0 ANTI-K0. By J.O. Eeg (Oslo U.), S. Fajfer (Ljubljana U. & Stefan Inst., Ljubljana), J. Zupan (Stefan Inst., Ljubljana),. Jan 2001. 20pp. Published in Phys.Rev.D64:034010,2001 e-Print Archive: hep-ph/0101215

Oslo highlights:

The CP violating quantity ε'/ε in K → 2π decays Predicted, with S. Bertolini, M. Fabbrichesi and two students at SISSA (in some contrast to other groups) the numerical value of ε'/ε to be almost exactly what it later turned out to be experimentally.

Non-factorizable (color suppressed) contributions to nonleptonic decays of heavy mesons In the heavy quark limit, non-leptonic decays of heavy mesons can (often to reasonably accurracy) be theoretically described as the product of matrix elements of hadronic weak currents. However, there might be important corrections to this limit, some processes have zero factorized amplitudes, but non-zero nonfactorizable ones.

Anomalous short and long distance aspects of the process B → Kη'

Near future (Bergen) Raklev: shapes of invariant-mass distributions (LHC) Vereshagin: CP violation in chargino production El Kaffas: CP violation in 2HDM/LHC

Raklev: Use full mass distributions (not only endpoints) SPS 1a:

SU1:

... many “strange” shapes

Calculated (can be rather complicated...) Further advantage: spin effects trivially included