Ricardo A. Jimenez
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Ricardo A. Jimenez has a total of 9 co-authors. Here are the top co-authors by number of shared publications:
- Joan Sola
Universitat de Barcelona
10 shared publications - David Garcia
Grup de Física Teòrica and Institut de Física d'Altes Energies Universitat Autònoma de Barcelona 08193 Bellaterra (Barcelona Catalonia Spain
4 shared publications David Garcia
Grup de Física Teòrica, Institut de Física d'Altes Energies, Universitat Autònoma de Barcelona, E-08193 Bellaterra (Barcelona), Catalonia, Spain
3 shared publicationsWolfgang Hollik
Institut für Theoretische Physik, Universität Karlsruhe, D-76128 Karlsruhe, Germany
3 shared publications- Jaume Guasch
Deptartament de Física Quàntica i Astrofísica and Institut de Ciències del Cosmos (ICCUB) Universitat de Barcelona Martí i Franquès 1 E-08028 Barcelona Catalonia Spain
2 shared publications Andreas Dabelstein
Institut für Theoretische Physik, Universität Karlsruhe, D-76128 Karlsruhe, Germany
1 shared publication
Latest Publications
- 1 April 1998
- Published by Springer Nature in The European Physical Journal C
- Vol. 2 (2) , 373-392
Quantum effects on $t\rightarrow H^{+}\,b$ in the MSSM: a window to “virtual” supersymmetry?- 1 April 1998
- Published by Springer Nature in The European Physical Journal C
- Vol. 2 (2) , 373-392
Quantum effects on $t\rightarrow H^{+}\,b$ in the MSSM: a window to “virtual” supersymmetry?- 1 August 1997
- Published by Elsevier in Physics Letters B
- Vol. 406 (4) , 337-346
The tan β − MH± bound from inclusive semi-tauonic B-decays in the MSSM
- 1 August 1997
- Published by Elsevier in Physics Letters B
- Vol. 406 (4) , 337-346
The tan β − MH± bound from inclusive semi-tauonic B-decays in the MSSM
- 1 November 1995
- Published by Elsevier in Nuclear Physics B
- Vol. 454 (1-2) , 75-85
Strong supersymmetric quantum effects on the top quark width
- 1 November 1995
- Published by Elsevier in Nuclear Physics B
- Vol. 454 (1-2) , 75-85
Strong supersymmetric quantum effects on the top quark width
- 1 October 1995
- Published by Elsevier in Physics Letters B
- Vol. 360 (1-2) , 47-56
Supersymmetric QCD corrections to the charged Higgs boson decay of the top quark
- 1 October 1995
- Published by Elsevier in Physics Letters B
- Vol. 360 (1-2) , 47-56
Supersymmetric QCD corrections to the charged Higgs boson decay of the top quark
- 1 March 1995
- Published by Elsevier in Physics Letters B
- Vol. 347 (3-4) , 321-331
Full electroweak supersymmetric quantum effects on Rb in the MSSM
- 1 March 1995
- Published by Elsevier in Physics Letters B
- Vol. 347 (3-4) , 321-331
Full electroweak supersymmetric quantum effects on Rb in the MSSM
- 1 March 1995
- Published by Elsevier in Physics Letters B
- Vol. 347 (3-4) , 309-320
Supersymmetric electroweak renormalization of the Z-width in the MSSM
- 1 March 1995
- Published by Elsevier in Physics Letters B
- Vol. 347 (3-4) , 309-320
Supersymmetric electroweak renormalization of the Z-width in the MSSM
- Open Access
Supersymmetric Electroweak Renormalization of the Z-Width in the MSSM (I)
Within the framework of the MSSM, we compute the complete set of electroweak one-loop supersymmetric quantum effects on the width $\Gamma_Z$ of the $Z$-boson in the on-shell renormalization scheme. Numerical analyses of the corrections to the various partial widths into leptons and quarks are presented. On general grounds, the average size of the electroweak SUSY corrections to $\Gamma_Z$ may well saturate the level of the present theoretical uncertainties, even if considering the full supersymmetric spectrum lying in the neighbourhood of the unaccessible LEP 200 range. Remarkably enough, for the present values of the top quark mass, the electroweak SUSY effects could be, globally, very close or even bigger than the electroweak SM corrections, but opposite in sign. Therefore, in the absence of theoretical errors, there are large regions of parameter space where one could find that, effectively, the electroweak SM corrections are ``missing'', or even having the ``wrong'' sign. This should be helpful in discriminating between the SM and the MSSM. However, an accurate prediction of the electroweak quantum effects on $\Gamma_Z$ will only be possible, if $\Delta r$ and $\alpha_s$ are pinned down in the future with enough precision.Open AccessSupersymmetric Electroweak Renormalization of the Z-Width in the MSSM (I)
Within the framework of the MSSM, we compute the complete set of electroweak one-loop supersymmetric quantum effects on the width $\Gamma_Z$ of the $Z$-boson in the on-shell renormalization scheme. Numerical analyses of the corrections to the various partial widths into leptons and quarks are presented. On general grounds, the average size of the electroweak SUSY corrections to $\Gamma_Z$ may well saturate the level of the present theoretical uncertainties, even if considering the full supersymmetric spectrum lying in the neighbourhood of the unaccessible LEP 200 range. Remarkably enough, for the present values of the top quark mass, the electroweak SUSY effects could be, globally, very close or even bigger than the electroweak SM corrections, but opposite in sign. Therefore, in the absence of theoretical errors, there are large regions of parameter space where one could find that, effectively, the electroweak SM corrections are ``missing'', or even having the ``wrong'' sign. This should be helpful in discriminating between the SM and the MSSM. However, an accurate prediction of the electroweak quantum effects on $\Gamma_Z$ will only be possible, if $\Delta r$ and $\alpha_s$ are pinned down in the future with enough precision. - Open Access
Supersymmetric Electroweak Renormaliztion of the Z-Width in the MSSM (II)
We address the computation of \Gamma_Z and of the intriguing quantity R_b in the MSSM including full treatment of the Higgs sector. For a pseudoscalar Higgs mass m_{A^0}>70\,GeV and CDF limits on m_t, the bounds on R_b at 1\sigma level leave no room to the MSSM to solve the `R_b crisis' for any combination of the parameters, not even admitting the possibility of a light chargino and a light stop of O(50) GeV; however, for m_t not restricted by CDF, a `tangential' solution exists in the window 2<\tan\beta<10 with a light chargino and stop. In contrast, for a pseudoscalar mass 40\,GeV<m_{A^0}m_t/m_b. Our general conclusion is that, if there is a `R_b crisis' at all, its solution within the MSSM has to do more with the peculiar structure of the SUSY Higgs sector rather than with the spectrum of genuine supersymmetric particles. In view of the range predicted for m_{A^0}, LEP 200 should be able to definitely settle down this question.
Open AccessSupersymmetric Electroweak Renormaliztion of the Z-Width in the MSSM (II)
We address the computation of \Gamma_Z and of the intriguing quantity R_b in the MSSM including full treatment of the Higgs sector. For a pseudoscalar Higgs mass m_{A^0}>70\,GeV and CDF limits on m_t, the bounds on R_b at 1\sigma level leave no room to the MSSM to solve the `R_b crisis' for any combination of the parameters, not even admitting the possibility of a light chargino and a light stop of O(50) GeV; however, for m_t not restricted by CDF, a `tangential' solution exists in the window 2<\tan\beta<10 with a light chargino and stop. In contrast, for a pseudoscalar mass 40\,GeV<m_{A^0}m_t/m_b. Our general conclusion is that, if there is a `R_b crisis' at all, its solution within the MSSM has to do more with the peculiar structure of the SUSY Higgs sector rather than with the spectrum of genuine supersymmetric particles. In view of the range predicted for m_{A^0}, LEP 200 should be able to definitely settle down this question.
- 1 September 1994
- Published by Elsevier in Nuclear Physics B
- Vol. 427 (1-2) , 53-80
Electroweak supersymmetric quantum corrections to the top quark width
- 1 September 1994
- Published by Elsevier in Nuclear Physics B
- Vol. 427 (1-2) , 53-80
Electroweak supersymmetric quantum corrections to the top quark width
- Open Access
Electroweak Supersymmetric Quantum Corrections to the Top Quark Width
Within the framework of the MSSM, we compute the electroweak one-loop supersymmetric quantum corrections to the width $\Gamma (t\rightarrow W^{+}\, b)$ of the canonical main decay of the top quark. The results are presented in two on-shell renormalization schemes parametrized either by $\alpha$ or $G_F$. While in the standard model, and in the Higgs sector of the MSSM, the electroweak radiative corrections in the $G_F$-scheme are rather insensitive to the top quark mass and are of order of $1\%$ at most, the rest (``genuine'' part) of the supersymmetric quantum effects in the MSSM amount to a non-negligible correction that could be about one order of magnitude larger, depending on the top quark mass and of the region of the supersymmetric parameter space. These new electroweak effects, therefore, could be of the same order (and go in the same direction) as the conventional leading QCD corrections.Open AccessElectroweak Supersymmetric Quantum Corrections to the Top Quark Width
Within the framework of the MSSM, we compute the electroweak one-loop supersymmetric quantum corrections to the width $\Gamma (t\rightarrow W^{+}\, b)$ of the canonical main decay of the top quark. The results are presented in two on-shell renormalization schemes parametrized either by $\alpha$ or $G_F$. While in the standard model, and in the Higgs sector of the MSSM, the electroweak radiative corrections in the $G_F$-scheme are rather insensitive to the top quark mass and are of order of $1\%$ at most, the rest (``genuine'' part) of the supersymmetric quantum effects in the MSSM amount to a non-negligible correction that could be about one order of magnitude larger, depending on the top quark mass and of the region of the supersymmetric parameter space. These new electroweak effects, therefore, could be of the same order (and go in the same direction) as the conventional leading QCD corrections.