Header

UZH-Logo

Maintenance Infos

Measurement of the $\Upsilon$(nS) polarizations in pp collisions at $\sqrt{s}$ = 7 and 8 TeV


LHCb Collaboration; Bernet, R; Müller, K; Serra, N; Steinkamp, O; Straumann, U; Vollhardt, A; et al (2017). Measurement of the $\Upsilon$(nS) polarizations in pp collisions at $\sqrt{s}$ = 7 and 8 TeV. Journal of High Energy Physics, 12:110.

Abstract

The polarization of the $\Upsilon$(1S), $\Upsilon$(2S) and $\Upsilon$(3S) mesons, produced in pp collisions at centre-of-mass energies $\sqrt{s}$ = 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 $\Upsilon \to \mu\mu$ decays in the kinematic region of the transverse momentum $p_T^\Upsilon$  < 30 GeV/$c$ and rapidity 2.2 < $y^\Upsilon$ < 4.5. No large polarization is observed.

Abstract

The polarization of the $\Upsilon$(1S), $\Upsilon$(2S) and $\Upsilon$(3S) mesons, produced in pp collisions at centre-of-mass energies $\sqrt{s}$ = 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 $\Upsilon \to \mu\mu$ decays in the kinematic region of the transverse momentum $p_T^\Upsilon$  < 30 GeV/$c$ and rapidity 2.2 < $y^\Upsilon$ < 4.5. No large polarization is observed.

Statistics

Citations

Dimensions.ai Metrics

Altmetrics

Downloads

7 downloads since deposited on 31 Jan 2018
7 downloads since 12 months
Detailed statistics

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2017
Deposited On:31 Jan 2018 15:40
Last Modified:19 Feb 2018 10:45
Publisher:Springer
ISSN:1029-8479
OA Status:Gold
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1007/JHEP12(2017)110

Download

Download PDF  'Measurement of the $\Upsilon$(nS) polarizations in pp collisions at $\sqrt{s}$ = 7 and 8 TeV'.
Preview
Content: Published Version
Filetype: PDF
Size: 1MB
View at publisher
Licence: Creative Commons: Attribution 4.0 International (CC BY 4.0)