Spin alignment of leading vector mesons and polarization of Λ baryons in multihadronic Z[sup 0] decays at OPAL

1998 ◽  
Author(s):  
Thomas H. Kress
Keyword(s):  
Vector Mesons ◽  
Spin Alignment

scholarly journals Local spin alignment of vector mesons in relativistic heavy-ion collisions

2021 ◽  
Vol 817 ◽  
pp. 136325
Author(s):  
Xiao-Liang Xia ◽  
Hui Li ◽  
Xu-Guang Huang ◽  
Huan Zhong Huang
Keyword(s):  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collisions ◽  
Vector Mesons ◽  
Spin Alignment ◽  
Local Spin ◽  
Ion Collisions

scholarly journals Spin alignment of vector mesons in heavy ion and proton–proton collisions

2010 ◽  
Vol 682 (4-5) ◽  
pp. 408-412 ◽  
Author(s):  
Alejandro Ayala ◽  
Eleazar Cuautle ◽  
G. Herrera Corral ◽  
J. Magnin ◽  
Luis Manuel Montaño
Keyword(s):  
Heavy Ion ◽  
Vector Mesons ◽  
Spin Alignment ◽  
Proton Proton ◽  
Proton Collisions ◽  
Proton Proton Collisions

scholarly journals Measurements of spin alignment of vector mesons and global polarization of hyperons with ALICE at the LHC

2018 ◽  
Vol 171 ◽  
pp. 16008 ◽  
Author(s):  
Bedangadas Mohanty
Keyword(s):  
Matrix Element ◽  
Transverse Momentum ◽  
Density Matrix ◽  
Spin Density ◽  
Spin Density Matrix ◽  
Vector Mesons ◽  
Spin Alignment ◽  
Polarization Signal ◽  
First Order ◽  
Spin Density Matrix Element

We present the measurements related to global polarization of Λ hyperons and spin alignment of K*0 vector mesons at mid-rapidity for Pb-Pb collisions at [see formula in PDF] = 2.76 TeV using the ALICE detector at the LHC. The global polarization measurements are carried out with respect to the first order event plane while the spin alignment measurements are carried out with respect to the production plane. No global polarization signal for Λ is observed for 5-15% and 15-50% central Pb-Pb collisions. The spin density matrix element ρ00 is found to have values slightly below ⅓ at low transverse momentum (pT) for K*0 mesons, while it is consistent with ⅓ (no spin alignment) at higher pT. No spin alignment is observed for K*0 in pp collisions at √s = 13 TeV and for the spin zero hadron K0S in 20-40% Pb-Pb collisions at [see formula in PDF] = 2.76 TeV.

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