Alfred Bartl
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Previous Organizations / Institutes
The organizations / institutes from the scholar's other articles in the past ten years
Research Subjects
Alfred Bartl has a total of 8 co-authors. Here are the top co-authors by number of shared publications:
- Elena Ginina
Institut für Hochenergiephysik Österreichischen Akademie der Wissenschaften
4 shared publications - Helmut Eberl
Institut für Hochenergiephysik
4 shared publications - Keisho Hidaka
Department of Physics Tokyo Gakugei University Koganei 184-8501 Tokyo Japan
4 shared publications - Walter Majerotto
Institut für Hochenergiephysik der Österreichischen Akademie der Wissenschaften, Vienna, Austria
4 shared publications - Avelino Vicente
Instituto de Física Corpuscular, CSIC-Universitat de València
2 shared publications - Martin Hirsch
Instituto de Física Corpuscular (CSIC-Universitat de València)
2 shared publications
Latest Publications
- Open Access
- 23 June 2016
- Published by Springer Nature in Journal of High Energy Physics
- Vol. 2016 (6) , 1-23
The decays h 0 → b b ¯ $ {h}^0\to b\overline{b} $ and h 0 → c c ¯ $ {h}^0\to c\overline{c} $ in the light of the MSSM with quark flavour violation- 23 June 2016
- Published by Springer Nature in Journal of High Energy Physics
- Vol. 2016 (6) , 1-23
Open AccessThe decays h 0 → b b ¯ $ {h}^0\to b\overline{b} $ and h 0 → c c ¯ $ {h}^0\to c\overline{c} $ in the light of the MSSM with quark flavour violation - Open Access
- 16 March 2016
- Published by Sissa Medialab Srl
- Vol. 234, 131
$h^0(125GeV) \to c \bar{c}$ as a test case for quark flavor violation in the MSSM
We calculate the decay width of h 0 (125GeV) → c c in the Minimal Supersymmetric Standard Model (MSSM) with non-minimal quark flavor violation (QFV) at full one-loop level. We adopt the DR renormalization scheme. We study the effects of the mixing of the second and third squark generations (i.e. scharm-stop mixing) on the decay width, respecting the experimental constraints from B-meson data, the Higgs mass measurement and supersymmetric (SUSY) particle searches. We show that the decay width Γ(h 0 → c c) at the full one-loop level is very sensitive to the SUSY QFV parameters. In a scenario with large scharm-stop mixing, the decay width can differ up to ∼ ±35% from its SM prediction. After taking into account the experimental and theoretical uncertainties of the decay width, we conclude that these QFV SUSY effects can be observed at a future e + e-collider such as ILC (International Linear Collider).
- 16 March 2016
- Published by Sissa Medialab Srl
- Vol. 234, 131
Open Access$h^0(125GeV) \to c \bar{c}$ as a test case for quark flavor violation in the MSSM
We calculate the decay width of h 0 (125GeV) → c c in the Minimal Supersymmetric Standard Model (MSSM) with non-minimal quark flavor violation (QFV) at full one-loop level. We adopt the DR renormalization scheme. We study the effects of the mixing of the second and third squark generations (i.e. scharm-stop mixing) on the decay width, respecting the experimental constraints from B-meson data, the Higgs mass measurement and supersymmetric (SUSY) particle searches. We show that the decay width Γ(h 0 → c c) at the full one-loop level is very sensitive to the SUSY QFV parameters. In a scenario with large scharm-stop mixing, the decay width can differ up to ∼ ±35% from its SM prediction. After taking into account the experimental and theoretical uncertainties of the decay width, we conclude that these QFV SUSY effects can be observed at a future e + e-collider such as ILC (International Linear Collider).
- Open Access
$h^0(125GeV) \to c \bar{c}$ as a test case for quark flavor violation in the MSSM
We calculate the decay width of $h^0(125GeV) \to c \bar{c}$ in the Minimal Supersymmetric Standard Model (MSSM) with non-minimal quark flavor violation (QFV) at full one-loop level. We adopt the $\overline{\rm DR}$ renormalization scheme. We study the effects of the mixing of the second and third squark generations (i.e. scharm-stop mixing) on the decay width, respecting the experimental constraints from B-meson data, the Higgs mass measurement and supersymmetric (SUSY) particle searches. We show that the decay width $\Gamma (h^0 \to c \bar{c})$ at the full one-loop level is very sensitive to the SUSY QFV parameters. In a scenario with large scharm-stop mixing, the decay width can differ up to $\sim \pm 35\%$ from its SM prediction. After taking into account the experimental and theoretical uncertainties of the decay width, we conclude that these QFV SUSY effects can be observed at a future $e^+ e^-$ collider such as ILC (International Linear Collider).Open Access$h^0(125GeV) \to c \bar{c}$ as a test case for quark flavor violation in the MSSM
We calculate the decay width of $h^0(125GeV) \to c \bar{c}$ in the Minimal Supersymmetric Standard Model (MSSM) with non-minimal quark flavor violation (QFV) at full one-loop level. We adopt the $\overline{\rm DR}$ renormalization scheme. We study the effects of the mixing of the second and third squark generations (i.e. scharm-stop mixing) on the decay width, respecting the experimental constraints from B-meson data, the Higgs mass measurement and supersymmetric (SUSY) particle searches. We show that the decay width $\Gamma (h^0 \to c \bar{c})$ at the full one-loop level is very sensitive to the SUSY QFV parameters. In a scenario with large scharm-stop mixing, the decay width can differ up to $\sim \pm 35\%$ from its SM prediction. After taking into account the experimental and theoretical uncertainties of the decay width, we conclude that these QFV SUSY effects can be observed at a future $e^+ e^-$ collider such as ILC (International Linear Collider). - Open AccessQuark-flavour violation in $h^0 \to b \bar{b}$ in the MSSM at one-loop levelWe compute the width of the decay $h^0$ (125 GeV) $\to b \bar{b}$ at next-to-leading order in the general MSSM with quark-flavour violation (QFV). We study the effect of mixing between the second and the third generation of squarks, taking into account the constraints on QFV from B-meson data. We discuss the renormalisation of the process as well as the resummation of the bottom Yukawa coupling at large $\tan \beta$. We show numerical results on the decay width $\Gamma(h^0 \to b \bar{b})$ as a function of the involved QFV parameters and compare them with the corresponding width in the Standard Model.Open AccessQuark-flavour violation in $h^0 \to b \bar{b}$ in the MSSM at one-loop levelWe compute the width of the decay $h^0$ (125 GeV) $\to b \bar{b}$ at next-to-leading order in the general MSSM with quark-flavour violation (QFV). We study the effect of mixing between the second and the third generation of squarks, taking into account the constraints on QFV from B-meson data. We discuss the renormalisation of the process as well as the resummation of the bottom Yukawa coupling at large $\tan \beta$. We show numerical results on the decay width $\Gamma(h^0 \to b \bar{b})$ as a function of the involved QFV parameters and compare them with the corresponding width in the Standard Model.
- Open Access
LHC phenomenology of the $μν$SSM
The $\mu\nu$SSM has been proposed to solve simultaneously the $\mu$-problem of the MSSM and explain current neutrino data. The model breaks lepton number as well as R-parity. In this paper we study the phenomenology of this proposal concentrating on neutrino masses and the decay of the lightest supersymmetric particle (LSP). At first we investigate in detail the $\mu\nu$SSM with one generation of singlets, which can explain all neutrino data, once 1-loop corrections are taken into account. Then we study variations of the model with more singlets, which can generate all neutrino masses and mixings at tree-level. We calculate the decay properties of the lightest supersymmetric particle, assumed to be the lightest neutralino, taking into account all possible final states. The parameter regions where the LSP decays within the LHC detectors but with a length large enough to show a displaced vertex are identified. Decay branching ratios of certain final states show characteristic correlations with the measured neutrino angles, allowing to test the model at the LHC. Finally we briefly discuss possible signatures, which allow to distinguish between different R-parity breaking models.
Open AccessLHC phenomenology of the $μν$SSM
The $\mu\nu$SSM has been proposed to solve simultaneously the $\mu$-problem of the MSSM and explain current neutrino data. The model breaks lepton number as well as R-parity. In this paper we study the phenomenology of this proposal concentrating on neutrino masses and the decay of the lightest supersymmetric particle (LSP). At first we investigate in detail the $\mu\nu$SSM with one generation of singlets, which can explain all neutrino data, once 1-loop corrections are taken into account. Then we study variations of the model with more singlets, which can generate all neutrino masses and mixings at tree-level. We calculate the decay properties of the lightest supersymmetric particle, assumed to be the lightest neutralino, taking into account all possible final states. The parameter regions where the LSP decays within the LHC detectors but with a length large enough to show a displaced vertex are identified. Decay branching ratios of certain final states show characteristic correlations with the measured neutrino angles, allowing to test the model at the LHC. Finally we briefly discuss possible signatures, which allow to distinguish between different R-parity breaking models.
- 1 May 2009
- Published by Springer Nature in Journal of High Energy Physics
- Vol. 2009 (05) , 120
LHC phenomenology of the μνSSM
- 1 May 2009
- Published by Springer Nature in Journal of High Energy Physics
- Vol. 2009 (05) , 120
LHC phenomenology of the μνSSM