000644474 001__ 644474
000644474 005__ 20260123210056.0
000644474 0247_ $$2datacite_doi$$a10.3204/PUBDB-2026-00345
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000644474 088__ $$2DESY$$aHERMES-25-001
000644474 1001_ $$0P:(DE-H253)PIP1003967$$aVeretennikov, Denis$$b0$$eCorresponding author$$gmale
000644474 245__ $$aLongitudinal spin transfer coefficient to $\Lambda$ and $\bar\Lambda$ hyperons in semi-inclusive deep-inelastic scattering$$f2017-09-01 - 2025-11-14
000644474 260__ $$aHamburg$$bVerlag Deutsches Elektronen-Synchrotron DESY$$c2025
000644474 300__ $$a138
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000644474 500__ $$aThis project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 824093 "STRONG-2020", from the QuantERA T-NisQ grant PCI2022-132984 financed by MCIN/AEI/10.13039/501100011033 Spain and the European Union’s ”NextGenerationEU”/PRTR, as well as PID2022-136510NB-C33 financed by MCIN/AEI Spain.
000644474 502__ $$aDissertation, University of the Basque Country UPV/EHU, 2025$$bDissertation$$cUniversity of the Basque Country UPV/EHU$$d2025$$o2025-11-14
000644474 520__ $$aThis dissertation presents a study of the spin-dependent production of the $\Lambda$ hyperon and the mechanisms of quark fragmentation, with a particular focus on data obtained from the HERMES experiment at DESY. The research explores the role of longitudinal spin effects in semi-inclusive deep-inelastic scattering. For that, the beam-spin induced polarization of $\Lambda$ and $\bar\Lambda$ hyperons produced in deep-inelastic scattering of longitudinally polarized leptons (positrons or electrons) from unpolarized nucleons is being investigated using data collected by the HERMES experiment at a lepton beam energy of 27.6 GeV. The beam-to-hyperon spin-transfer coefficients $D_{LX}$ and $D_{LZ}$, i.e., transverse and along the hyperon momentum direction, are studied as function of the relevant kinematic variables.A novel extraction method, which does not rely on precise detector-response simulations, has been developed and is presented here. Advanced data analysis techniques are employed to mitigate systematic uncertainties arising from experimental acceptance and detector inefficiencies. This approach is applied for the first time by taking advantage of the regular reversal of the HERA lepton beam helicity at the HERMES experiment.
000644474 536__ $$0G:(DE-HGF)POF4-611$$a611 - Fundamental Particles and Forces (POF4-611)$$cPOF4-611$$fPOF IV$$x0
000644474 536__ $$0G:(EU-Grant)824093$$aSTRONG-2020 - The strong interaction at the frontier of knowledge: fundamental research and applications (824093)$$c824093$$fH2020-INFRAIA-2018-1$$x1
000644474 693__ $$0EXP:(DE-588)4517776-4$$1EXP:(DE-588)4159571-3$$5EXP:(DE-588)4517776-4$$aHERA$$eHERA: HERMES$$x0
000644474 7001_ $$0P:(DE-H253)PIP1007090$$aSchnell, Gunar$$b1$$eThesis advisor
000644474 7001_ $$0P:(DE-HGF)0$$aEgusquiza Egusquiza, I. L.$$b2$$eThesis advisor
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000644474 9131_ $$0G:(DE-HGF)POF4-611$$1G:(DE-HGF)POF4-610$$2G:(DE-HGF)POF4-600$$3G:(DE-HGF)POF4$$4G:(DE-HGF)POF$$aDE-HGF$$bForschungsbereich Materie$$lMatter and the Universe$$vFundamental Particles and Forces$$x0
000644474 9141_ $$y2025
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