Measurement of the Y(nS) polarizations in pp collisions at √s=7 and 8 TeV

The LHCb Collaboration

doi:10.1007/JHEP12(2017)110

Measurement of the Y(nS) polarizations in pp collisions at √s=7 and 8 TeV

The LHCb Collaboration

(Astro)-Particles Physics

Research output: Contribution to Journal › Article › Academic › peer-review

Abstract

The polarization of the Y(1S), Y(2S) and Y(3S) mesons, produced in pp collisions at centre-of-mass energies s=7 and 8 TeV, is measured using data samples collected by the LHCb experiment, corresponding to integrated luminosities of 1 and 2 fb⁻¹, respectively. The measurements are performed in three polarization frames, using Y → μμ decays in the kinematic region of the transverse momentum p_T ^Υ < 30 GeV/c and rapidity 2.2 < y^Y < 4.5. No large polarization is observed.

Original language	English
Article number	110
Journal	Journal of High Energy Physics
Volume	2017
Issue number	12
DOIs	https://doi.org/10.1007/JHEP12(2017)110
Publication status	Published - 1 Dec 2017

Funding

Open Access, Copyright CERN, for the benefit of the LHCb Collaboration. Article funded by SCOAP3.

Funders	Funder number
Not added	1681016, 1796908, ST/H006737/1
Conseil Général de Haute-Savoie
Herchel Smith Fund
Labex ENIGMASS
Marie Sklo dowska-Curie Actions
MinES
OCEVU
Région Auvergne
Yandex LLC
National Science Foundation
Alexander von Humboldt-Stiftung
CERN
Science and Technology Facilities Council	ST/J004332/1, ST/N000250/1, 1641747, ST/K001604/1, ST/K003410/1, ST/G005974/1, LHCb, ST/N000331/1, GRIDPP, LHCb Upgrades
Leverhulme Trust
Royal Society
Royal Commission for the Exhibition of 1851
European Commission
European Research Council
Deutsche Forschungsgemeinschaft
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung	166208
National Natural Science Foundation of China
Russian Foundation for Basic Research
Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
Bundesministerium für Bildung und Forschung
Nederlandse Organisatie voor Wetenschappelijk Onderzoek
Generalitat Valenciana
Conselho Nacional de Desenvolvimento Científico e Tecnológico
Instituto Nazionale di Fisica Nucleare
Narodowe Centrum Nauki
Ministerstwo Nauki i Szkolnictwa Wyższego
Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
Ministry of Science and Technology, Taiwan
National Academy of Sciences of Ukraine
Centre National de la Recherche Scientifique
Financiadora de Estudos e Projetos
Institut national de physique nucléaire et de physique des particules
Federal Agency for Scientific Organizations
Sociedad Española de Reumatología

Keywords

Hadron-Hadron scattering (experiments)
Particle and resonance production
Polarization
QCD

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1007/JHEP12(2017)110

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@article{411d05a583914217bd0884fd338b0ce4,

title = "Measurement of the Y(nS) polarizations in pp collisions at √s=7 and 8 TeV",

abstract = "The polarization of the Y(1S), Y(2S) and Y(3S) mesons, produced in pp collisions at centre-of-mass energies s=7 and 8 TeV, is measured using data samples collected by the LHCb experiment, corresponding to integrated luminosities of 1 and 2 fb−1, respectively. The measurements are performed in three polarization frames, using Y → μμ decays in the kinematic region of the transverse momentum pT Υ < 30 GeV/c and rapidity 2.2 < yY < 4.5. No large polarization is observed.",

keywords = "Hadron-Hadron scattering (experiments), Particle and resonance production, Polarization, QCD",

author = "R. Aaij and B. Adeva and M. Adinolfi and Z. Ajaltouni and S. Akar and J. Albrecht and F. Alessio and M. Alexander and {Alfonso Albero}, A. and S. Ali and G. Alkhazov and {Alvarez Cartelle}, P. and Alves, {A. A.} and S. Amato and S. Amerio and Y. Amhis and L. An and L. Anderlini and G. Andreassi and M. Andreotti and Andrews, {J. E.} and Appleby, {R. B.} and F. Archilli and P. d{\textquoteright}Argent and {Arnau Romeu}, J. and A. Artamonov and M. Artuso and E. Aslanides and G. Auriemma and M. Baalouch and I. Babuschkin and S. Bachmann and Back, {J. J.} and A. Badalov and C. Baesso and {Carvalho Akiba}, K. and M. Ferro-Luzzi and T. Ketel and T. Li and M. Merk and Onderwater, {C. J.G.} and G. Raven and M. Schiller and N. Serra and B. Storaci and V. Syropoulos and {van Tilburg}, J. and S. Tolk and P. Tsopelas and N. Tuning and {The LHCb collaboration}, {LHCb collaboration}",

year = "2017",

month = dec,

day = "1",

doi = "10.1007/JHEP12(2017)110",

language = "English",

volume = "2017",

journal = "Journal of High Energy Physics",

issn = "1126-6708",

publisher = "Springer Verlag",

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T1 - Measurement of the Y(nS) polarizations in pp collisions at √s=7 and 8 TeV

AU - Aaij, R.

AU - Adeva, B.

AU - Adinolfi, M.

AU - Ajaltouni, Z.

AU - Akar, S.

AU - Albrecht, J.

AU - Alessio, F.

AU - Alexander, M.

AU - Alfonso Albero, A.

AU - Ali, S.

AU - Alkhazov, G.

AU - Alvarez Cartelle, P.

AU - Alves, A. A.

AU - Amato, S.

AU - Amerio, S.

AU - Amhis, Y.

AU - An, L.

AU - Anderlini, L.

AU - Andreassi, G.

AU - Andreotti, M.

AU - Andrews, J. E.

AU - Appleby, R. B.

AU - Archilli, F.

AU - d’Argent, P.

AU - Arnau Romeu, J.

AU - Artamonov, A.

AU - Artuso, M.

AU - Aslanides, E.

AU - Auriemma, G.

AU - Baalouch, M.

AU - Babuschkin, I.

AU - Bachmann, S.

AU - Back, J. J.

AU - Badalov, A.

AU - Baesso, C.

AU - Carvalho Akiba, K.

AU - Ferro-Luzzi, M.

AU - Ketel, T.

AU - Li, T.

AU - Merk, M.

AU - Onderwater, C. J.G.

AU - Raven, G.

AU - Schiller, M.

AU - Serra, N.

AU - Storaci, B.

AU - Syropoulos, V.

AU - van Tilburg, J.

AU - Tolk, S.

AU - Tsopelas, P.

AU - Tuning, N.

AU - The LHCb Collaboration

PY - 2017/12/1

Y1 - 2017/12/1

N2 - The polarization of the Y(1S), Y(2S) and Y(3S) mesons, produced in pp collisions at centre-of-mass energies s=7 and 8 TeV, is measured using data samples collected by the LHCb experiment, corresponding to integrated luminosities of 1 and 2 fb−1, respectively. The measurements are performed in three polarization frames, using Y → μμ decays in the kinematic region of the transverse momentum pT Υ < 30 GeV/c and rapidity 2.2 < yY < 4.5. No large polarization is observed.

AB - The polarization of the Y(1S), Y(2S) and Y(3S) mesons, produced in pp collisions at centre-of-mass energies s=7 and 8 TeV, is measured using data samples collected by the LHCb experiment, corresponding to integrated luminosities of 1 and 2 fb−1, respectively. The measurements are performed in three polarization frames, using Y → μμ decays in the kinematic region of the transverse momentum pT Υ < 30 GeV/c and rapidity 2.2 < yY < 4.5. No large polarization is observed.

KW - Hadron-Hadron scattering (experiments)

KW - Particle and resonance production

KW - Polarization

KW - QCD

UR - http://www.scopus.com/inward/record.url?scp=85039070542&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85039070542&partnerID=8YFLogxK

U2 - 10.1007/JHEP12(2017)110

DO - 10.1007/JHEP12(2017)110

M3 - Article

AN - SCOPUS:85039070542

SN - 1126-6708

VL - 2017

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

IS - 12

M1 - 110

ER -

Measurement of the Y(nS) polarizations in pp collisions at √s=7 and 8 TeV

Abstract

Funding

Keywords

UN SDGs

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