Measurement of transverse <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mi mathvariant="normal">Λ</mml:mi> </mml:math> and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow> <mml:mo

The transverse polarization of <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"> <a:mi mathvariant="normal">Λ</a:mi> </a:math> and <d:math xmlns:d="http://www.w3.org/1998/Math/MathML" display="inline"> <d:mrow> <d:mover accent="true"> <d:mrow> <d:mi mathvariant="normal">Λ</d:mi> </d:mrow> <d:mrow> <d:mo stretchy="false">¯</d:mo> </d:mrow> </d:mover> </d:mrow> </d:math> hyperons is measured in <i:math xmlns:i="http://www.w3.org/1998/Math/MathML" display="inline"> <i:mrow> <i:mi>p</i:mi> <i:mi>Pb</i:mi> </i:mrow> </i:math> collisions collected by the LHCb experiment at a nucleon-nucleon center-of-mass energy of 5.02 TeV. The polarization is averaged over hyperon transverse momentum in the range <k:math xmlns:k="http://www.w3.org/1998/Math/MathML" display="inline"> <k:mrow> <k:mn>0.15</k:mn> <k:mo>&lt;</k:mo> <k:msub> <k:mrow> <k:mi>p</k:mi> </k:mrow> <k:mrow> <k:mi mathvariant="normal">T</k:mi> </k:mrow> </k:msub> <k:mo>&lt;</k:mo> <k:mn>6.00</k:mn> <k:mtext> </k:mtext> <k:mtext> </k:mtext> <k:mrow> <k:mrow> <k:mi>GeV</k:mi> <k:mo>/</k:mo> </k:mrow> <k:mi>c</k:mi> </k:mrow> </k:mrow> </k:math> , and Feynman- <n:math xmlns:n="http://www.w3.org/1998/Math/MathML" display="inline"> <n:mi>x</n:mi> </n:math> in the ranges <p:math xmlns:p="http://www.w3.org/1998/Math/MathML" display="inline"> <p:mn>0.005</p:mn> <p:mo>&lt;</p:mo> <p:msub> <p:mi>x</p:mi> <p:mi mathvariant="normal">F</p:mi> </p:msub> <p:mo>&lt;</p:mo> <p:mn>0.040</p:mn> </p:math> (forward region) and <s:math xmlns:s="http://www.w3.org/1998/Math/MathML" display="inline"> <s:mo>−</s:mo> <s:mn>0.10</s:mn> <s:mo>&lt;</s:mo> <s:msub> <s:mi>x</s:mi> <s:mi mathvariant="normal">F</s:mi> </s:msub> <s:mo>&lt;</s:mo> <s:mo>−</s:mo> <s:mn>0.01</s:mn> </s:math> (backward region) defined relative to the proton beam direction. The transverse polarization is found to be compatible with zero for both <v:math xmlns:v="http://www.w3.org/1998/Math/MathML" display="inline"> <v:mrow> <v:mi mathvariant="normal">Λ</v:mi> </v:mrow> </v:math> and <y:math xmlns:y="http://www.w3.org/1998/Math/MathML" display="inline"> <y:mrow> <y:mover accent="true"> <y:mrow> <y:mi mathvariant="normal">Λ</y:mi> </y:mrow> <y:mrow> <y:mo stretchy="false">¯</y:mo> </y:mrow> </y:mover> </y:mrow> </y:math> hyperons. The results are also measured as a function of <db:math xmlns:db="http://www.w3.org/1998/Math/MathML" display="inline"> <db:msub> <db:mi>p</db:mi> <db:mi mathvariant="normal">T</db:mi> </db:msub> </db:math> and <gb:math xmlns:gb="http://www.w3.org/1998/Math/MathML" display="inline"> <gb:msub> <gb:mi>x</gb:mi> <gb:mi mathvariant="normal">F</gb:mi> </gb:msub> </gb:math> with no significant dependence on these variables observed. The results are compared with previous experimental measurements at different center-of-mass energies and collision environments.

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Publication Details

Journal
Physical review. D/Physical review. D.
Published
2025-11-10
DOI
https://doi.org/10.1103/rc6r-zt9q
Citations
1
Primary Topic
High-Energy Particle Collisions Research
Type
article
Field-Weighted Citation Impact
1.87
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article

Measurement of transverse <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mi mathvariant="normal">Λ</mml:mi> </mml:math> and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow> <mml:mo

Karl J. Friston
1 citations
Physical review. D/Physical review. D.
High-Energy Particle Collisions Research
1.87
article

Measurement of transverse <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mi mathvariant="normal">Λ</mml:mi> </mml:math> and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow> <mml:mo

Karl J. Friston
article en
1 citations

Abstract

The transverse polarization of <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"> <a:mi mathvariant="normal">Λ</a:mi> </a:math> and <d:math xmlns:d="http://www.w3.org/1998/Math/MathML" display="inline"> <d:mrow> <d:mover accent="true"> <d:mrow> <d:mi mathvariant="normal">Λ</d:mi> </d:mrow> <d:mrow> <d:mo stretchy="false">¯</d:mo> </d:mrow> </d:mover> </d:mrow> </d:math> hyperons is measured in <i:math xmlns:i="http://www.w3.org/1998/Math/MathML" display="inline"> <i:mrow> <i:mi>p</i:mi> <i:mi>Pb</i:mi> </i:mrow> </i:math> collisions collected by the LHCb experiment at a nucleon-nucleon center-of-mass energy of 5.02 TeV. The polarization is averaged over hyperon transverse momentum in the range <k:math xmlns:k="http://www.w3.org/1998/Math/MathML" display="inline"> <k:mrow> <k:mn>0.15</k:mn> <k:mo>&lt;</k:mo> <k:msub> <k:mrow> <k:mi>p</k:mi> </k:mrow> <k:mrow> <k:mi mathvariant="normal">T</k:mi> </k:mrow> </k:msub> <k:mo>&lt;</k:mo> <k:mn>6.00</k:mn> <k:mtext> </k:mtext> <k:mtext> </k:mtext> <k:mrow> <k:mrow> <k:mi>GeV</k:mi> <k:mo>/</k:mo> </k:mrow> <k:mi>c</k:mi> </k:mrow> </k:mrow> </k:math> , and Feynman- <n:math xmlns:n="http://www.w3.org/1998/Math/MathML" display="inline"> <n:mi>x</n:mi> </n:math> in the ranges <p:math xmlns:p="http://www.w3.org/1998/Math/MathML" display="inline"> <p:mn>0.005</p:mn> <p:mo>&lt;</p:mo> <p:msub> <p:mi>x</p:mi> <p:mi mathvariant="normal">F</p:mi> </p:msub> <p:mo>&lt;</p:mo> <p:mn>0.040</p:mn> </p:math> (forward region) and <s:math xmlns:s="http://www.w3.org/1998/Math/MathML" display="inline"> <s:mo>−</s:mo> <s:mn>0.10</s:mn> <s:mo>&lt;</s:mo> <s:msub> <s:mi>x</s:mi> <s:mi mathvariant="normal">F</s:mi> </s:msub> <s:mo>&lt;</s:mo> <s:mo>−</s:mo> <s:mn>0.01</s:mn> </s:math> (backward region) defined relative to the proton beam direction. The transverse polarization is found to be compatible with zero for both <v:math xmlns:v="http://www.w3.org/1998/Math/MathML" display="inline"> <v:mrow> <v:mi mathvariant="normal">Λ</v:mi> </v:mrow> </v:math> and <y:math xmlns:y="http://www.w3.org/1998/Math/MathML" display="inline"> <y:mrow> <y:mover accent="true"> <y:mrow> <y:mi mathvariant="normal">Λ</y:mi> </y:mrow> <y:mrow> <y:mo stretchy="false">¯</y:mo> </y:mrow> </y:mover> </y:mrow> </y:math> hyperons. The results are also measured as a function of <db:math xmlns:db="http://www.w3.org/1998/Math/MathML" display="inline"> <db:msub> <db:mi>p</db:mi> <db:mi mathvariant="normal">T</db:mi> </db:msub> </db:math> and <gb:math xmlns:gb="http://www.w3.org/1998/Math/MathML" display="inline"> <gb:msub> <gb:mi>x</gb:mi> <gb:mi mathvariant="normal">F</gb:mi> </gb:msub> </gb:math> with no significant dependence on these variables observed. The results are compared with previous experimental measurements at different center-of-mass energies and collision environments.

Physical review. D/Physical review. D.Vol. 112(11)
University College Dublin (IE), Eötvös Loránd University (HU), Universidade da Coruña (ES), Universidade Federal do Rio de Janeiro (BR), Uppsala University (SE), Jagiellonian University (PL), Rutherford Appleton Laboratory (GB), Los Alamos National Laboratory (US), University of Bonn (DE), University of Liverpool (GB), Universitat de València (ES), University of Freiburg (DE), Hunan University (CN), University of Groningen (NL), Vilnius University (LT), South China Normal University (CN), Taras Shevchenko National University of Kyiv (UA), Université Clermont Auvergne (FR), Universidade de Santiago de Compostela (ES), TU Dortmund University (DE), Peking University (CN), University of Zurich (CH), Aix-Marseille Université (FR), Heidelberg University (DE), University of Cambridge (GB), Cracow University of Technology (PL), Pontifícia Universidade Católica do Rio de Janeiro (BR), Université Paris-Saclay (FR), University of Michigan (US), Kharkiv Institute of Physics and Technology (UA), Australian Regenerative Medicine Institute (AU), University of Manchester (GB), Maastricht University (NL), University of Bristol (GB), Universidad Nacional de Colombia (CO), Wuhan University (CN), University of Warwick (GB), Sorbonne Université (FR), University of Oxford (GB), Central China Normal University (CN), Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering (RO), National Institute for Subatomic Physics (NL), Istituto Nazionale di Fisica Nucleare, Sezione di Padova (IT), Institute of Nuclear Physics, Polish Academy of Sciences (PL), Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara (IT), Istituto Nazionale di Fisica Nucleare, Sezione di Bari (IT), Istituto Nazionale di Fisica Nucleare, Roma Tor Vergata (IT), FZU ‒ Institute of Physics of the Academy of Sciences of the Czech Republic (CZ), Centro Brasileiro de Pesquisas Físicas (BR), Istituto Nazionale di Fisica Nucleare, Sezione di Genova (IT), Istituto Nazionale di Fisica Nucleare, Sezione di Cagliari (IT), Istituto Nazionale di Fisica Nucleare, Sezione di Firenze (IT), Istituto Nazionale di Fisica Nucleare, Sezione di Milano (IT), Istituto Nazionale di Fisica Nucleare, Sezione di Milano Bicocca (IT), Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati (IT), Istituto Nazionale di Fisica Nucleare, Sezione di Bologna (IT), Laboratoire Leprince-Ringuet (FR), Max Planck Institute for Nuclear Physics (DE), Istituto Nazionale di Fisica Nucleare, Sezione di Roma I (IT), Istituto Nazionale di Fisica Nucleare, Sezione di Pisa (IT), Istituto Nazionale di Fisica Nucleare, Sezione di Perugia (IT), University of Chinese Academy of Sciences (CN), Consejo Nacional de Rectores, Laboratoire Médiations (FR), Imperial College London (GB), The Ohio State University (US), Universitat Ramon Llull (ES), Monash University (AU), University of Cincinnati (US), Massachusetts Institute of Technology (US), University of Maryland, College Park (US), European Organization for Nuclear Research (CH), AGH University of Krakow (PL), Université Savoie Mont Blanc (FR), Syracuse University (US), Universitat de Barcelona (ES), Henan Normal University (CN), Lanzhou University (CN), University of Glasgow (GB), University of Birmingham (GB), RWTH Aachen University (DE), Ruhr University Bochum (DE), University of Edinburgh (GB), Tsinghua University (CN)
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High-Energy Particle Collisions Research
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