Orhan Cakir
Ankara University
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Publication
Featured researches published by Orhan Cakir.
Journal of Physics G | 2002
G. Azuelos; Driss Benchekroun; Orhan Cakir; Erik Elfgren; F. Gianotti; Jørgen Beck Hansen; I. Hinchliffe; M. Hohlfeld; K. Jakobs; Claude Leroy; R. Mehdiyev; F. Paige; G. Polesello; Hasko Stenzel; Stefan Tapprogge; Z. Usubov; L. Vacavant
The impact of possible LHC upgrades on the physics capabilities of the ATLAS detector is discussed. As a benchmark, an increase in the luminosity by a factor of 10 is considered. For comparison, the doubling of the LHC energy is also explored. Both upgrades significantly enhance the physics capabilities of ATLAS. Measured in terms of the mass reach for new particles, the energy upgrade is more powerful. However, in cases where the effect of an upgrade is to increase the precision of measurements as a result of larger data samples, the luminosity upgrade can be at least as powerful. The pile-up of minimum bias events at higher luminosity could limit the physics performance of ATLAS in areas where tagging of forward jets is needed.
Journal of High Energy Physics | 2002
E. Arik; S. A. Cetin; Orhan Cakir; S. Sultansoy
Resonant production of the flrst generation vector diquarks at the CERN Large Hadron Collider (LHC) is investigated. It is shown that the LHC will be able to discover vector diquarks with masses up to 9TeV for quark-diquark-quark coupling fiD = 0:1 and 4TeV for fiD = 5£ 10 i4 .
Journal of Physics G | 2003
Orhan Cakir
The single production of a top quark due to flavour-changing neutral current (FCNC) interaction and its decay to bW are studied at CLIC+LHC based γp colliders. We consider both tcγ and tuγ anomalous couplings. The charm (up) quark anomalous coupling parameter κcγ(κuγ) can be probed down to 9.5 × 10−3 (8.0 × 10−3) at a γp collider with √sep = 6.48 TeV and Lint = 100 fb−1.
New Journal of Physics | 2006
Orhan Cakir
Production of doubly charged Higgs bosons via the s-channel process e−e−→ H–→ l−l− at future linear collider energies is studied by taking into account initial state radiation (ISR) and beamstrahlung (ISR+BS), final state radiation (FSR) and detector smearing effects. The discovery bounds of lepton flavour conserving and violating couplings are obtained for doubly charged Higgs bosons. It is found that future linear colliders with centre of mass energies and will be able to probe the doubly charged Higgs bosons with diagonal couplings down to 10−4 and 10−3, respectively.Production of doubly charged Higgs bosons via the s-channel process e?e?? H?? l?l? at future linear collider energies is studied by taking into account initial state radiation (ISR) and beamstrahlung (ISR+BS), final state radiation (FSR) and detector smearing effects. The discovery bounds of lepton flavour conserving and violating couplings are obtained for doubly charged Higgs bosons. It is found that future linear colliders with centre of mass energies and will be able to probe the doubly charged Higgs bosons with diagonal couplings down to 10?4 and 10?3, respectively.
Journal of Physics G | 2005
Orhan Cakir; S. A. Cetin
Production of single top quarks via the anomalous interaction u(c)g → t, and its decay to W + b are studied for the CERN LHC ATLAS experiment. The sensitivity to anomalous coupling κ/Λ down to 0.024 TeV−1 can be achieved.
arXiv: High Energy Physics - Phenomenology | 2007
Orhan Cakir; Ilkay T. Cakir; John Ellis; Zerrin Kirca
arXiv: High Energy Physics - Phenomenology | 2007
Orhan Cakir; Ilkay T. Cakir; John Ellis; Zerrin Kirca
arXiv: High Energy Physics - Phenomenology | 2006
E. Arik; Orhan Cakir; S. A. Cetin; S. Sultansoy
Archive | 2008
E. Arik; Orhan Cakir; Serkant Ali Çetin; S. Sultansoy
Journal of Physics G | 2005
Orhan Cakir; S. A. Cetin