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PDF bias and flavor dependence in TMD distributions
/ Bury, Marcin (Unlisted, PL) ; Hautmann, Francesco (Antwerp U. ; Oxford U. ; CERN) ; Leal-Gomez, Sergio (Vienna U.) ; Scimemi, Ignazio (Madrid U.) ; Vladimirov, Alexey (Regensburg U. ; Madrid U.) ; Zurita, Pia (Regensburg U.)
Transverse momentum dependent (TMD) distributions match collinear parton density functions (PDF) in the limit of small transverse distances, which is accounted for by global extractions of TMD distributions. We study the influence of the collinear PDF value and uncertainties on the determination of unpolarized TMD distributions and the description of Drell-Yan (DY) and Z-boson production measurements at low transverse momenta. [...]
arXiv:2201.07114; UWThPh 2021-29; CERN-TH-2022-126.-
2022-10-18 - 30 p.
- Published in : JHEP 10 (2022) 118
Fulltext: Publication - PDF; 2201.07114 - PDF;
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2.
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Flavor dependent $b$-profiles from Drell-Yan spectra at low transverse momenta
/ Bury, M. (Unlisted, PL) ; Hautmann, F. (CERN ; Antwerp U. ; Oxford U. ; U. Antwerp (main) ; U. Oxford (main)) ; Leal-Gomez, S. (Vienna U.) ; Scimemi, I. (Madrid U.) ; Vladimirov, A. (Madrid U. ; Regensburg U.) ; Zurita, P. (Regensburg U.)
We discuss our recent study of the impact of collinear PDFs and their uncertainties on the determination of transverse momentum dependent (TMD) distributions and the description of Drell-Yan (DY) production measurements at low transverse momenta. Using QCD factorization and evolution in transverse coordinate b space, this study takes into account for the first time flavor-dependent non-perturbative b-profiles. [...]
arXiv:2211.05063; CERN-TH-2022-183.-
2022-12-14 - 6 p.
- Published in : PoS: ICHEP2022 (2022) , pp. 834
Fulltext: document - PDF; 2211.05063 - PDF;
In : 41st International Conference on High Energy Physics (ICHEP 2022), Bologna, Italy, 6 - 13 Jul 2022, pp.834
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3.
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The small $k_{\textrm{T}}$region in Drell–Yan production at next-to-leading order with the parton branching method
/ Bubanja, I. (Montenegro U. ; Vrije U., Brussels) ; Bermudez Martinez, A. (CERN) ; Favart, L. (Vrije U., Brussels) ; Guzman, F. (Unlisted, CU) ; Hautmann, F. (CERN ; Antwerp U. ; Oxford U.) ; Jung, H. (DESY ; Hamburg U., Inst. Theor. Phys. II) ; Lelek, A. (Antwerp U.) ; Mendizabal, M. (DESY) ; Figueroa, K. Moral (DESY) ; Moureaux, L. (Hamburg U.) et al.
The Parton Branching (PB) method describes the evolution of transverse momentum dependent (TMD) parton distributions, covering all kinematic regions from small to large transverse momenta kT. The small kT-region is very sensitive both to the contribution of the intrinsic motion of partons (intrinsic kT) and to the resummation of soft gluons taken into account by the PB TMD evolution equations. [...]
arXiv:2312.08655; DESY-23-209.-
2024-02-15 - 16 p.
- Published in : Eur. Phys. J. C 84 (2024) 154
Fulltext: 2312.08655 - PDF; Publication - PDF;
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4.
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The Parton Branching Sudakov and its relation to CSS
/ Martinez, A Bermudez (CERN) ; Hautmann, F (CERN ; Antwerp U. ; Oxford U.) ; Keersmaekers, L (Antwerp U.) ; Lelek, A (Antwerp U.) ; Mendizabal Morentin, M (DESY, Zeuthen) ; Monfared, S Taheri (DESY, Zeuthen) ; van Kampen, A M (Antwerp U.)
The Transverse Momentum Dependent (TMD) Parton Branching (PB) method is a Monte Carlo (MC) approach to obtain QCD high energy collider predictions grounded in ideas originating from the TMD factorization. It provides an evolution equation for the TMD parton distribution functions (TMDs) and a framework to use those within TMD MC generators.This work focuses on the structure of the PB Sudakov form factor. [...]
2024 - 6 p.
- Published in : PoS EPS-HEP2023 (2024) 270
Fulltext: PDF;
In : 2023 European Physical Society Conference on High Energy Physics (EPS-HEP2023), Hamburg, Germany, 20 - 25 Aug 2023, pp.270
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5.
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Azimuthal correlations in high pT processes with the TMD parton branching method at NLO
/ van Kampen, Mees (Antwerp U.) ; Martinez, A Bermudez (DESY) ; Banos, L I Estevez (DESY) ; Hautmann, F (Antwerp U. ; CERN ; Oxford U.) ; Jung, H (DESY) ; Mendizabal, M (DESY) ; Figueroa, K Moral (Edinburgh U.) ; Prestel, S (Lund U.) ; Monfared, S Taheri (DESY) ; Wang, Q (DESY ; Peking U.) et al.
We discuss our recent results on azimuthal distributions in vector boson + jets and multi-jet production at the LHC, obtained from the matching of next-to-leading order (NLO) perturbative matrix elements with transverse momentum dependent (TMD) parton branching. We present a comparative analysis of boson-jet and jet-jet correlations in the back to-back region, and a study of the theoretical systematic uncertainties associated with the matching scale in the cases of TMD and collinear parton showers..
arXiv:2209.13945.-
2022 - 6 p.
- Published in : PoS ICHEP2022 (2022) 830
Fulltext: document - PDF; 2209.13945 - PDF;
In : 41st International Conference on High Energy Physics (ICHEP 2022), Bologna, Italy, 6 - 13 Jul 2022, pp.830
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8.
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Production of Z-bosons in the parton branching method
/ Bermudez Martinez, A. (DESY) ; Connor, P. (DESY) ; Dominguez Damiani, D. (DESY) ; Estevez Banos, L.I. (DESY) ; Hautmann, F. (Antwerp U. ; Basque U., Bilbao ; CERN) ; Jung, H. (DESY) ; Lidrych, J. (DESY) ; Schmitz, M. (DESY) ; Taheri Monfared, S. (DESY) ; Wang, Q. (DESY ; Peking U.) et al.
Transverse Momentum Dependent (TMD) parton distributions obtained from the Parton Branching (PB) method are combined with next-to-leading-order (NLO) calculations of Drell-Yan (DY) production. We apply the MCatNLO method for the hard process calculation and matching with the PB TMDs. [...]
arXiv:1906.00919; DESY-19-087; CERN-TH-2019-095; DESY 19-087.-
2019-10-25 - 10 p.
- Published in : Phys. Rev. D 100 (2019) 074027
Article from SCOAP3: PDF; Fulltext: PDF;
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9.
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PDF Profiling Using the Forward-Backward Asymmetry in Neutral Current Drell-Yan Production
/ Accomando, Elena (Southampton U. ; Rutherford) ; Fiaschi, Juri (Munster U., ITP ; Southampton U. ; Rutherford) ; Hautmann, Francesco (Rutherford ; Antwerp U. ; Oxford U., Theor. Phys. ; U. Basque Country, Leioa ; CERN) ; Moretti, Stefano (Southampton U. ; Rutherford) ; Bertone, Valerio (Pavia U.) ; Giuli, Francesco (Rome U., Tor Vergata ; INFN, Rome2) ; Abdolmaleki, Hamen (Semnan U.) ; Luszczak, Agnieszka (Cracow Tech. U.) ; Glazov, Alexander (DESY) ; Olness, Fred (Southern Methodist U.) et al.
/xFitter Developers' team
Non-perturbative QCD effects from Parton Distribution Functions (PDFs) may be constrained by using high-statistics Large Hadron Collider (LHC) data. Drell-Yan (DY) measurements in the Charged Current (CC) case provide one of the primary means to do this, in the form of the lepton charge asymmetry. [...]
arXiv:1907.07727; DESY-19-127; MS-TP-19-19; CERN-TH-2019-110.-
2019-10-15 - 21 p.
- Published in : JHEP 1910 (2019) 176
Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF;
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10.
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Double parton distributions in the pion from lattice QCD
/ Bali, Gunnar S. (Regensburg U. ; TIFR, Mumbai, Dept. Theor. Phys.) ; Castagnini, Luca (Regensburg U.) ; Diehl, Markus (Hamburg U. ; DESY) ; Gaunt, Jonathan R. (CERN) ; Gläßle, Benjamin (Tubingen U.) ; Schäfer, Andreas (Regensburg U.) ; Zimmermann, Christian (Regensburg U.)
We perform a lattice study of double parton distributions in the pion, using the relationship between their Mellin moments and pion matrix elements of two local currents. A good statistical signal is obtained for almost all relevant Wick contractions. [...]
arXiv:2006.14826; DESY 20-098; DESY-20-098; CERN-TH-2020-086.-
2021-02-08 - 60 p.
- Published in : JHEP 2102 (2021) 067
Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF;
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