The production of the neutral strange hadrons K-S(0), Lambda and (Lambda) over bar has been measured in ep collisions at HERA using the ZEUS detector. Cross sections, baryon-to-meson ratios, relative yields of strange and charged light hadrons, Lambda ((Lambda) over bar) asymmetry and polarization have been measured in three kinematic regions: Q(2) > 25 GeV2; 5 < Q(2) < 25 GeV2; and in photoproduction (Q(2) similar or equal to 0). In photoproduction the presence of two hadronic jets, each with at least 5 GeV transverse energy, was required. The measurements agree in general with Monte Carlo models and are consistent with measurements made at e(+)e(-) colliders, except for an enhancement of baryon relative to meson production in photoproduction. RI Wing, Matthew/C-2169-2008; IBRAHIM, ZAINOL ABIDIN/C-1121-2010; Fazio, Salvatore /G-5156-2010; WAN ABDULLAH, WAN AHMAD TAJUDDIN/B-5439-2010; Doyle, Anthony/C-5889-2009; Ferrando, James/A-9192-2012; Gladilin, Leonid/B-5226-2011

The production of the neutral strange hadrons K(S)(0), Lambda and (Lambda) over bar has been measured in ep collisions at HERA using the ZEUS detector. Cross sections, baryon-to-meson ratios, relative yields of strange and charged light hadrons, Lambda ((Lambda) over bar) asymmetry and polarization have been measured in three kinematic regions: Q(2) > 25 GeV(2); 5 < Q(2) < 25 GeV(2); and in photoproduction (Q(2) similar or equal to 0). In photoproduction the presence of two hadronic jets, each with at least 5 GeV transverse energy, was required. The measurements agree in general with Monte Carlo models and are consistent with measurements made at e(+)e(-) colliders, except for an enhancement of baryon relative to meson production in photoproduction.

The production of the neutral strange hadrons K(S)(0), Lambda and (Lambda) over bar has been measured in ep collisions at HERA using the ZEUS detector. Cross sections, baryon-to-meson ratios, relative yields of strange and charged light hadrons, Lambda ((Lambda) over bar) asymmetry and polarization have been measured in three kinematic regions: Q(2) > 25 GeV(2); 5 < Q(2) < 25 GeV(2); and in photoproduction (Q(2) similar or equal to 0). In photoproduction the presence of two hadronic jets, each with at least 5 GeV transverse energy, was required. The measurements agree in general with Monte Carlo models and are consistent with measurements made at e(+)e(-) colliders, except for an enhancement of baryon relative to meson production in photoproduction.

Measurement of K(S)(0), Lambda and (Lambda)over-bar production at HERA

CAPUA, Marcella;Fazio S.;MASTROBERARDINO, Anna;Schioppa M.;TASSI, Enrico;
2007-01-01

Abstract

The production of the neutral strange hadrons K(S)(0), Lambda and (Lambda) over bar has been measured in ep collisions at HERA using the ZEUS detector. Cross sections, baryon-to-meson ratios, relative yields of strange and charged light hadrons, Lambda ((Lambda) over bar) asymmetry and polarization have been measured in three kinematic regions: Q(2) > 25 GeV(2); 5 < Q(2) < 25 GeV(2); and in photoproduction (Q(2) similar or equal to 0). In photoproduction the presence of two hadronic jets, each with at least 5 GeV transverse energy, was required. The measurements agree in general with Monte Carlo models and are consistent with measurements made at e(+)e(-) colliders, except for an enhancement of baryon relative to meson production in photoproduction.
2007
The production of the neutral strange hadrons K-S(0), Lambda and (Lambda) over bar has been measured in ep collisions at HERA using the ZEUS detector. Cross sections, baryon-to-meson ratios, relative yields of strange and charged light hadrons, Lambda ((Lambda) over bar) asymmetry and polarization have been measured in three kinematic regions: Q(2) &gt; 25 GeV2; 5 &lt; Q(2) &lt; 25 GeV2; and in photoproduction (Q(2) similar or equal to 0). In photoproduction the presence of two hadronic jets, each with at least 5 GeV transverse energy, was required. The measurements agree in general with Monte Carlo models and are consistent with measurements made at e(+)e(-) colliders, except for an enhancement of baryon relative to meson production in photoproduction. RI Wing, Matthew/C-2169-2008; IBRAHIM, ZAINOL ABIDIN/C-1121-2010; Fazio, Salvatore /G-5156-2010; WAN ABDULLAH, WAN AHMAD TAJUDDIN/B-5439-2010; Doyle, Anthony/C-5889-2009; Ferrando, James/A-9192-2012; Gladilin, Leonid/B-5226-2011
The production of the neutral strange hadrons K(S)(0), Lambda and (Lambda) over bar has been measured in ep collisions at HERA using the ZEUS detector. Cross sections, baryon-to-meson ratios, relative yields of strange and charged light hadrons, Lambda ((Lambda) over bar) asymmetry and polarization have been measured in three kinematic regions: Q(2) &gt; 25 GeV(2); 5 &lt; Q(2) &lt; 25 GeV(2); and in photoproduction (Q(2) similar or equal to 0). In photoproduction the presence of two hadronic jets, each with at least 5 GeV transverse energy, was required. The measurements agree in general with Monte Carlo models and are consistent with measurements made at e(+)e(-) colliders, except for an enhancement of baryon relative to meson production in photoproduction.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11770/126863
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