LHCb - Minimum Bias physics plans and MC framework - EPFL
LHCb - Minimum Bias physics plans and MC framework - EPFL
LHCb - Minimum Bias physics plans and MC framework - EPFL
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Strangeness production<br />
No valence strange quarks in the initial state, strangeness probes<br />
fragmentation field in a unique way.<br />
Non-diff, prompt Λ <strong>and</strong> ¯Λ.<br />
¯Λ/Λ<br />
1.05<br />
1<br />
0.95<br />
0.9<br />
0.85<br />
<strong>LHCb</strong> <strong>MC</strong> generator level 5 TeV/beam<br />
<strong>LHCb</strong><br />
<strong>LHCb</strong>+S0APro<br />
<strong>LHCb</strong>+P0<br />
<strong>LHCb</strong>+PX<br />
<strong>LHCb</strong>+P3<br />
<strong>LHCb</strong>+P6<br />
<strong>LHCb</strong>+PNOCR<br />
<strong>LHCb</strong>+PSoft<br />
<strong>LHCb</strong>+PHard<br />
0.8<br />
−10 −8 −6 −4 −2 0 2 4 6 8 10<br />
η<br />
The distributions were<br />
obtained by varying consistently<br />
PYTHIA parameters<br />
related to: parton distribution<br />
functions, initial state radiation,<br />
final state radiation,<br />
beam remnant, hadronization,<br />
underlying event,<br />
color reconnection see<br />
P. Sk<strong>and</strong>s on Perugia tunes<br />
on top of <strong>LHCb</strong> specific <strong>MC</strong><br />
tunings.<br />
<strong>MC</strong>Net CERN R. Mures¸an, <strong>LHCb</strong> report – p.9/30
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