668 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Institute for Research in Fundamental SciencesIR108 papers
- Damghan UniversityIR31 papers
- Islamic Azad University, MashhadIR13 papers
- K. N. Toosi University of TechnologyIR13 papers
- Farhangian UniversityIR12 papers
- Shahid Beheshti UniversityIR11 papers
- University of TehranIR11 papers
- Dublin City UniversityIE10 papers
- Golestan UniversityIR10 papers
- Centre National de la Recherche ScientifiqueFR9 papers
- Deakin UniversityAU9 papers
- Institute of Metal Superplasticity ProblemsRU9 papers
34 papers · 1 filter
Impact of momentum-dependent drag coefficient on energy loss of charm and bottom quarks in QGP
Marjan Rahimi Nezhad, Fatemeh Taghavi-Shahri, Kurosh Javidan
This paper investigates the influence of heavy-quark momentum on their interaction rate and the resulting drag coefficient in a quark-gluon plasma. To go beyond simplified treatmen…
Two pseudo-Goldstone bosons in the Gildener-Weinberg model
Parsa Ghorbani
In a dimensionless multi-scalar extension of the Standard Model, Gildener and Weinberg assumed that along a flat direction, there is only one classically massless scalar, known as…
A comparative study of different approaches for heavy quark energy loss, based on the latest experimental data
Marjan Rahimi Nezhad, Fatemeh Taghavi Shahri, Sharareh Mehrabi Pari +1
This paper presents a comparative analysis of three distinct methods used to calculate the collisional energy loss of heavy quarks in Quark-Gluon Plasma. The study focuses on the c…
The hierarchy problem and the vacuum stability in two-scalar dark matter model
Zohre Habibolahi, Karim Ghorbani, Parsa Ghorbani
We consider an extension to the Standard Model (SM) with two extra real singlet scalars which interact with the SM Higgs particle. The lighter scalar is taken as the dark matter (D…
Dark Matter and Muon Anomaly via Scale Symmetry Breaking
Parsa Ghorbani
The Standard Model (SM) without the Higgs mass term is scale invariant. Gildener and Weinberg generalized the scale invariant standard model (SISM) by including the multiplication…
-Boson Mass Anomaly from Scale Invariant 2HDM
Karim Ghorbani, Parsa Ghorbani
The recently reported measurement of the -boson mass by CDF-II collaboration is significantly heavier than that of the Standard Model prediction. We study this anomaly in the sc…
Proton structure functions at low : the Fractal distributions
Samira Shoeibi Mohsenabadi, Shahin Atashbar Tehrani, Fatemeh Taghavi-Shahri
In this paper, we present the extraction of the Parton Distribution Functions (PDFs) at small momentum fractions x and at the next-to-leading order (NLO) accuracy in perturbative Q…
Impacts of EMC effects on the D meson modification factor in equilibrating QGP
A. Mirjalili, J. Sheibani, K. Javidan +2
In this article we employ the nuclear EMC effect to extract the parton distribution functions (PDFs) inside the Lead (Pb) and Gold (Au) nuclei. Extracted PDFs are utilized to obtai…
Vacuum Stability vs. Positivity in Real Singlet Scalar Extension of the Standard Model
Parsa Ghorbani
We assume a generic real singlet scalar extension of the Standard Model living in the vacuum at the electroweak scale with GeV and being respectively the Higgs…
Vacuum structure and electroweak phase transition in singlet scalar dark matter
Parsa Ghorbani
In the presence of a real singlet scalar field with symmetry in addition to the Higgs field in the Standard Model, we analytically investigate all possible one-step…
Non-Extensive Behaviour of the QCD Strong Coupling Constant
K. Javidan, M. M. Yazdanpanah, H. Nematollahi
The compatibility of theoretically calculated values for the strong coupling constant,through the renormalization group approach with experimental data is studied. There exist cons…
NNLO compatibility between pQCD theory and phenomenology in determination of the -quark pole and \MSbar running masses
A. Vafaee, K. Javidan, A. B. Shokouhi
This contribution attempts to determine the -quark pole mass and \MSbar running mass with two different approaches at the next-to-next-to-leading order (N…
Constraining the top quark effective field theory using the top quark pair production in association with a jet at future lepton colliders
Reza Jafari, Parvin Eslami, Mojtaba Mohammadi Najafabadi +1
Our main aim in this paper is to constrain the effective field theory describing the top quark couplings through the jet process. The analysis i…
A Simultaneous Study of Dark Matter and Phase Transition: Two-Scalar Scenario
Karim Ghorbani, Parsa Hossein Ghorbani
The simplest extension of the Standard Model by only one real singlet scalar can explain the observed dark matter relic density while giving simultaneously a strongly first-order e…
The effect of LHC ATLAS jet production cross sections data at TeV on the proton PDFs up to N3LO
A. Vafaee, K. Javidan, A. B. Shokouhi
The effect of full sets of LHC ATLAS jet cross sections data at TeV on the proton parton distribution functions (PDFs) up to next-to-next-to-next-to-leading ord…
Determination of contributions from residual light charged hadrons to inclusive charged hadrons from annihilation data
Alireza Mohamaditabar, F. Taghavi-Shahri, Hamzeh Khanpour +1
In this paper, we present an extraction of the contribution from the "{\it residual}" light charged hadrons to the inclusive unidentified light charged hadron fragmentation functio…
QCD analysis of leading-neutron production at HERA: Determination of neutron fracture functions
Samira Shoeibi, F. Taghavi-Shahri, Kurosh Javidan
The last two decades have seen a growing trend towards the experimental efforts at the electron-proton collider HERA in which have collected high precision data on the spectrum of…
Phenomenology of leading nucleon production in collisions at HERA in the framework of fracture functions
Samira Shoeibi, F. Taghavi-Shahri, Hamzeh Khanpour +1
In recent years, several experiments at the collider HERA have collected high precision deep inelastic scattering (DIS) data on the spectrum of leading nucleon carrying a la…
Parton distribution functions with QED corrections in the valon model
Marzieh Mottaghizadeh, Fatemeh Taghavi Shahri, Parvin Eslami
Parton distribution functions (PDFs) with QED corrections extracted from the QEDQCD DGLAP evolution equations in the framework of "valon" model. Our results for the PDFs w…
Analytical solutions of the QCDQED DGLAP evolution equations based on the Mellin transform technique in NLO approximation
Marzieh Mottaghizadeh, Fatemeh Taghavi Shahri, Parvin Eslami
In this paper we present a new and efficient analytical solutions for evolving the QEDQCD DGLAP evolution equations in mellin space and obtain the parton distribution func…
Contribution of Orbital Angular Momentum to the Nucleon Spin
Maryam Momeni-Feili, Firooz Arash, Fatemeh Taghavi-Shahri +1
We have calculated the Orbital Angular Momentum of quarks and gluons in the nucleon. The calculations are carried out in the next to leading order utilizing the so-called valon mod…
Determination of neutron fracture functions from a global QCD analysis of leading neutron production at HERA
Samira Shoeibi, Hamzeh Khanpour, F. Taghavi-Shahri +1
In this article, we present our global QCD analysis of leading neutron production in deep inelastic scattering at H1 and ZEUS collaborations. The analysis is performed in the frame…
Fragmentation Functions of neutral mesons and with Laplace transform approach
F. Taghavi-Shahri, S. Atashbar Tehrani, M. Zareei
With an analytical solutions of DGLAP evolution equations based on the Laplace transform method , we find the fragmentation functions (FFs) of neutral mesons, and at N…
Decoupling the NLO coupled QED QCD, DGLAP evolution equations,Using Laplace Transform Method
Marzieh Mottaghizadeh, Parvin Eslami, Fatemeh Taghavi-Shahri
We analytically solved the QED QCD coupled DGLAP evolution equations at leading order (LO) quantum electrodynamics (QED) and next to leading order (NLO) quantum chromodyn…