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1.
Anomalous Wtb coupling effects in the weak radiative B-meson decay / Grzadkowski, Bohdan (Warsaw U. ; CERN) ; Misiak, Mikolaj (Warsaw U. ; CERN)
We study the effect of anomalous Wtb couplings on the B -> Xs gamma branching ratio. The considered couplings are introduced as parts of gauge-invariant dimension-six operators that are built out of the Standard Model fields only. [...]
arXiv:0802.1413; IFT-2-2008.- 2008 - 5 p. - Published in : Phys. Rev. D 78 (2008) 077501
- Published in : Phys. Rev. D 84 (2011) 059903 APS Published version, local copy: PDF; External link: Fulltext
2.
KK gravitons and unitarity violation in the Randall-Sundrum model / Grzadkowski, Bohdan ; Gunion, John F
2007 - Published in : Phys. Lett. B 653 (2007) 307-319
3.
Optimal-Observable Analysis of Possible New Physics Using the b-quark in $\gamma \gamma \to t\overline{t} \to bX$ / Grzadkowski, Bohdan (CERN) ; Hioki, Zenro ; Ohkuma, Kazumasa ; Wudka, Jose
We study possible anomalous top-quark couplings generated by SU(2) x U(1) gauge invariant dimension-6 effective operators, using the final b-quark momentum distribution in gamma gamma -> tt -> bX. Taking into account non-standard tt gamma, tbW and gamma gamma H couplings, we perform an optimal-observable analysis in order to estimate the precision for the determination of all relevant non-standard couplings..
hep-ph/0403174; CERN-PH-TH-2004-050; FUT-2004-01; IFT-2004-09; UCRHEP-T-372.- Geneva : CERN, 2004 - 13 p. - Published in : Phys. Lett. B 593 (2004) 189-197 Access to fulltext document: PDF; External link: hep-ph/0403174 PDF - CERN library copies
4.
Electroweak symmetry breaking and radion stabilization in universal extra dimensions / Bucci, Patrizia (Warsaw U.) ; Grzadkowski, Bohdan (Warsaw U. ; CERN) ; Lalak, Zygmunt (Warsaw U.) ; Matyszkiewicz, Radoslaw (Warsaw U.)
We discuss the stabilization of the scalar sector, including the radion, in the gauge model with one universal extra dimension, within Higgs and Higgsless scenarios. The stabilization occurs at the one-loop level, through the fermionic contribution to the effective potential: in the Higgs case, for stabilization to take place the bosonic contribution must be balanced by the fermionic one, hence the scales of these two cannot differ too much. [...]
hep-ph/0403012; CERN-PH-TH-2004-036; IFT-2004-08; CERN-PH-TH-2004-036; IFT-2004-08.- Geneva : CERN, 2004 - 20 p. - Published in : JHEP 04 (2004) 067 Access to fulltext document: PDF; Fulltext: PDF; SISSA/IOP Published version, local copy: PDF; External link: Preprint - Please contact the library if you need to access this document.
5.
CP Violation from 5-dimensional QED / Grzadkowski, Bohdan (Warsaw U. ; CERN) ; Wudka, Jose (UC, Riverside)
It has been shown that QED in (1+4)-dimensional space-time, with the fifth dimension compactified on a circle, leads to CP violation (CPV). Depending on fermionic boundary conditions, CPV may be either explicit (through the Scherk--Schwarz mechanism), or spontaneous (via the Hosotani mechanism). [...]
hep-ph/0401232; CERN-PH-TH-2004-012; IFT-04-04; UCRHEP-T370; CERN-PH-TH-2004-012; IFT-2004-04; UCRHEP-T-370.- Geneva : CERN, 2004 - 11 p. - Published in : Phys. Rev. Lett. 93 (2004) 211603 APS Published version, local copy: PDF; Access to fulltext document: PDF; Fulltext: PDF; External link: Preprint - Please contact the library if you need to access this document.
6.
Low-energy effective theory from a non-trivial scalar background in extra dimensions / Grzadkowski, Bohdan (Warsaw U. ; CERN) ; Toharia, Manuel (UC, Davis)
Consequences of a non-trivial scalar field background for an effective 4D theory were studied in the context of one compact extra dimension. The periodic background that appears within the (1+4)-dimensional $\phi^4$ theory was found and the excitations above the background (and their spectrum) were determined analytically. [...]
hep-ph/0401108; CERN-PH-TH-2004-003; IFT-02-04; UCD-04-14; CERN-PH-TH-2004-003; IFT-2004-02; UCD-2004-14.- Geneva : CERN, 2004 - 29 p. - Published in : Nucl. Phys. B 686 (2004) 165-187 Access to fulltext document: PDF; Fulltext: PDF; External link: Preprint - Please contact the library if you need to access this document.
7.
Triviality and stability limits on the Higgs boson mass in effective theories / Grzadkowski, Bohdan (Warsaw U. ; CERN) ; Pliszka, Jacek (Warsaw U. ; UC, Riverside) ; Wudka, Jose (UC, Riverside)
The impact of new interactions on the triviality and stability Higgs-boson mass bounds has been studied. The interactions have been parame- trized in a model-independent way by a set of effective operators of dimension 6. [...]
hep-ph/0311153; IFT-35-2003; UCRHEP-T365; IFT-2003-35; UCRHEP-T-365.- Warsaw : Warsaw Univ. Inst. Theor. Phys., 2003 - 10 p. Fulltext: arXiv:hep-ph_0311153 - PDF; v34p5477 - PDF; External link: Acta Physica Polonica Server
In : 27th International Conference of Theoretical Physics: Matter to the Deepest. Recent Developments in Physics of Fundamental Interactions, Ustron, Poland, 15 - 21 Sep 2003, pp.5477-5486
8.
Probing Anomalous Top-Quark Couplings Induced by Dim.6 Operators at Photon Colliders / Grzadkowski, Bohdan (Warsaw U. ; CERN) ; Hioki, Zenro (Tokushima U.) ; Ohkuma, Kazumasa (Fukui Inst. Tech.) ; Wudka, Jose (UC, Riverside)
Possible anomalous top-quark couplings induced by SU(2) x U(1) gauge-invariant dimension-6 effective operators were studied in the process of t t-bar productions and decays at polarized gamma gamma colliders. Two CP-violating asymmetries, a linear-polarization asymmetry and a circular-polarization asymmetry, were computed including both non-standard [t t-bar gamma] and [gamma gamma H] couplings. [...]
hep-ph/0310159; IFT-25-03; FUT-03-02; UCRHEP-T364; FUT-2003-02; IFT-2003-25; UCRHEP-T-364.- Warsaw : Warsaw Univ. Inst. Theor. Phys., 2003 - 22 p. - Published in : Nucl. Phys. B 689 (2004) 108-126 Access to fulltext document: PDF; Fulltext: PDF; External link: hep-ph/0310159 PDF
9.
Gluon fusion : a direct probe of Higgs sector CP violation at the SSC / Gunion, J F ; Yuan, T C ; Grzadkowski, Bohdan
1994
In : International Workshop on Supersymmetry and Unification of Fundamental Interactions, Boston, MA, USA, 29 Mar - 1 Apr 1993, pp.405-412
10.
The decay rate asymmetry of the top quark / Grzadkowski, Bohdan (CERN) ; Keung, Wai-Yee (CERN)
The asymmetries ${\cal A}_k \equiv [\Gamma(\twddec) -\Gamma(\tbwddec)] /[\Gamma(\twddec) + \Gamma(\tbwddec)]$ in the partial widths of the top quark decays are discussed within the Standard Model (SM), the Two-Higgs-Doublet Model (2HDM) and supersymmetric extensions of the SM (SSM). The leading contributions to these asymmetries in the SM and in the 2HDM are induced by the up-type quark self-energy diagrams and are found to be very small. [...]
hep-ph/9310286; CERN-TH-6941-93; UICHEP-TH-93-15; CERN-TH-6941-93; UICHEP-TH-93-15.- Geneva : CERN, 1993 - 9 p. - Published in : Phys. Lett. B 319 (1993) 526-532 Access to fulltext document: 9310286 - PDF; th-6941-93 - PS.GZ; Fulltext: PDF; External link: hep-ph/9310286 PDF - Please contact the library if you need to access this document.

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