Abdolmaleki, Hamed - Search Results

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Exploring SMEFT couplings using the forward–backward asymmetry in neutral current Drell–Yan production at the LHC / Abdolmaleki, Hamed (IPM, Tehran ; Lorestan U.) ; Amoroso, Simone (DESY) ; Britzger, Daniel (Munich, Max Planck Inst.) ; Dattola, Filippo (DESY) ; Fiaschi, Juri (INFN, Milan Bicocca ; Milan Bicocca U.) ; Giuli, Francesco (CERN) ; Glazov, Alexander (DESY) ; Hautmann, Francesco (CERN ; Antwerp U. ; Oxford U.) ; Luszczak, Agnieszka (Cracow Tech. U.) ; Taheri Monfared, Sara (DESY) et al.
Neutral current Drell-Yan (DY) lepton-pair production is considered in the framework of the Standard Model Effective Field Theory (SMEFT). Using the open-source fit platform xFitter, we investigate the impact of high-statistics measurements of the neutral current DY (NCDY) forward-backward asymmetry $A_{\rm{FB}}$ near the weak boson mass scale in the present and forthcoming stages of the Large Hadron Collider (LHC). [...]
arXiv:2310.19638; DESY-23-160.- 2024-12-09 - 22 p. - Published in : Eur. Phys. J. C 84 (2024) 1277 Fulltext: 2310.19638 - PDF; document - PDF;

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QCD analysis of pion fragmentation functions in the xFitter framework / Abdolmaleki, Hamed (IPM, Tehran) ; Soleymaninia, Maryam (IPM, Tehran) ; Khanpour, Hamzeh (USTM, Behshahr ; IPM, Tehran) ; Amoroso, Simone (DESY) ; Giuli, Francesco (INFN, Rome2 ; Rome U., Tor Vergata) ; Glazov, Alexander (DESY) ; Luszczak, Agnieszka (Cracow Tech. U.) ; Olness, Fredrick (Southern Methodist U.) ; Zenaiev, Oleksandr (CERN) /xfitter Developers’ Team
We present the first open-source analysis of fragmentation functions (FFs) of charged pions (entitled IPM-xFitter) computed at next-to-leading order (NLO) and next-to-next-to-leading order (NNLO) accuracy in perturbative QCD using the xFitter framework. This study incorporates a comprehensive and up-to-date set of pion production data from single-inclusive annihilation (SIA) processes, as well as the most recent measurements of inclusive cross-sections of single pion by the BELLE collaboration. [...]
arXiv:2105.11306.- 2021-09-01 - 17 p. - Published in : Phys. Rev. D 104 (2021) 056019 Fulltext: PDF; Fulltext from publisher: PDF;

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Recent QCD results from the xFitter project: Probing the strange content of the proton with charm production in charged current at LHeC / xFitter Developers Team Collaboration
We investigate charm production in charged-current deep-inelastic scattering (DIS) using the xFitter program. xFitter is an open-source software framework for the determination of PDFs and the analysis of QCD physics, and has been used for a variety of LHC studies. [...]
arXiv:1909.00451.- SISSA, 2019-08-16 - 6 p. - Published in : PoS DIS2019 (2019) 025 Fulltext: 1909.00451 - PDF; PoS(DIS2019)025 - PDF;
In : The XXVII International Workshop on Deep Inelastic Scattering and Related Subjects, Turin, Italy, 8 - 12 Apr 2019, pp.025

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Probing the strange content of the proton with charm production in charged current at LHeC / Abdolmaleki, Hamed (Semnan U.) ; Bertone, Valerio (INFN, Pavia ; Pavia U.) ; Britzger, Daniel (Munich, Max Planck Inst.) ; Camarda, Stefano (CERN) ; Cooper-Sarkar, Amanda (Oxford U.) ; Geiser, Achim (DESY) ; Giuli, Francesco (INFN, Rome2 ; Rome U., Tor Vergata) ; Glazov, Alexander (DESY) ; Luszczak, Agnieszka (Cracow Tech. U.) ; Novikov, Ivan (Dubna, JINR) et al. /xFitter Developers' Team
We study charm production in charged-current deep-inelastic scattering (DIS) using the xFitter framework. Recent results from the LHC have focused renewed attention on the determination of the strange-quark parton distribution function (PDF) and the DIS charm process provides important complementary constraints on this quantity. [...]
arXiv:1907.01014; DESY-19-107.- 2019-10-22 - 19 p. - Published in : Eur. Phys. J. C 79 (2019) 864 Article from SCOAP3: PDF; Fulltext: PDF;

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Impact of low-$x$ resummation on QCD analysis of HERA data / xFitter Developers' Team Collaboration
Fits to the final combined HERA deep-inelastic scattering cross-section data within the conventional DGLAP framework of QCD have shown some tension at low $x$ and low $Q^2$. A resolution of this tension incorporating $\ln(1/x)$-resummation terms into the HERAPDF fits is investigated using the xFitter program. [...]
arXiv:1802.00064; DESY-18-017.- 2018-08-03 - 14 p. - Published in : Eur. Phys. J. C 78 (2018) 621 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: 1651789_arXiv:1802.00064 - PDF; arXiv:1802.00064 - PDF; 1802.00064 - PDF; External links: 00037 The up valence PDF $xu_v$, the gluon PDF $xg$ and the total singlet PDF $x\Sigma$ for the final fits with (NNLO+NLL$x$) and without (NNLO) $\ln(1/x)$ resummation.; 00027 The up valence PDF $xu_v$, the gluon PDF $xg$ and the total singlet PDF $x\Sigma$ for each of the 4 steps outlined in the text.; 00035 The up valence PDF $xu_v$, the gluon PDF $xg$ and the total singlet PDF $x\Sigma$ for each of the 4 steps outlined in the text.; 00033 The up valence PDF $xu_v$, the gluon PDF $xg$ and the total singlet PDF $x\Sigma$ for the final fits with (NNLO+NLL$x$) and without (NNLO) $\ln(1/x)$ resummation.; 00029 The HERA NC $E_p= 920$~GeV data compared to the fits with and without $\ln(1/x)$ resummation for the $Q^2 = 3.5$ and $4.5$~GeV$^2$ bins.; 00025 The HERA NC $E_p= 920$~GeV data compared to the fits with and without $\ln(1/x)$ resummation for the $Q^2 = 3.5$ and $4.5$~GeV$^2$ bins.; 00026 The charm PDF at $x=10^{-4}$ as a function of the factorisation scale $\mu$ for different values of the charm threshold $\mu_c = \kappa_c m_c$, with $\kappa_c=1.12,1.5,2,2.5$. The plots show the effect of the matching at NNLO (upper plot) and at NNLO+NLL$x$ (lower plot).; 00032 Scatter plot of the low-$x$ and low-$Q^2$ kinematic region covered by the HERA1+2 inclusive data and charm data at $E_p= 920$~GeV. The green shaded area indicates the region in which $\ln(1/x)$ resummation has a significant effect.; 00042 The resummed splitting functions at NNLO+NLL$x$ (solid) compared to fixed order at LO (dotted), NLO (dashed) and NNLO (dot-dot-dashed) for $P_{gg}$ (upper curves) and $P_{qg}$ (lower curves) as a function of $x$. The plots are at $\alpha_S=0.28$ (corresponding to $Q^2\sim 4$~GeV$^2$) and $n_f=4$.; 00036 The $\chi^2$/d.o.f. as a function of $Q^2_{\rm min}$ (left), $x_{\rm min}$ (center), and $y_{\rm max}$ (right). Each plot reports also the number of degrees of freedom at the extremities of each profile.; 00043 The $\chi^2$/d.o.f. as a function of $Q^2_{\rm min}$ (left), $x_{\rm min}$ (center), and $y_{\rm max}$ (right). Each plot reports also the number of degrees of freedom at the extremities of each profile.; 00031 The $\chi^2$/d.o.f. as a function of $Q^2_{\rm min}$ (left), $x_{\rm min}$ (center), and $y_{\rm max}$ (right). Each plot reports also the number of degrees of freedom at the extremities of each profile.

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See also: similar author names
2	Abdolmaleki, H
6	Abdolmaleki, H.
1	Abdolmaleki, Hamen

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