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Studies of X(3872) and ψ(2S) production in pp¯ collisions at 1.96 TeV
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SYSNO ASEP 0537335 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Studies of X(3872) and ψ(2S) production in pp¯ collisions at 1.96 TeV Author(s) Abazov, V. M. (RU)
Abbott, B. (US)
Acharya, B.S. (IN)
Kupčo, Alexander (FZU-D) RID, ORCID
Lokajíček, Miloš (FZU-D) RID, ORCID
Royon, C. (FR)Number of authors 372 Article number 072005 Source Title Physical Review D. - : American Physical Society - ISSN 2470-0010
Roč. 102, č. 7 (2020), s. 1-14Number of pages 14 s. Language eng - English Country US - United States Keywords Fermilab ; hadroproduction ; hadron ; D0 Subject RIV BF - Elementary Particles and High Energy Physics OECD category Particles and field physics Research Infrastructure Fermilab-CZ II - 90113 - Fyzikální ústav AV ČR, v. v. i. Method of publishing Open access Institutional support FZU-D - RVO:68378271 UT WOS 000576892700002 EID SCOPUS 85096620846 DOI 10.1103/PhysRevD.102.072005 Annotation We present various properties of the production of the X(3872) and ψ(2S) states based on 10.4 fb-1 collected by the D0 experiment in Tevatron pp¯ collisions at s=1.96 TeV. For both states, we measure the nonprompt fraction fNP of the inclusive production rate due to decays of b-flavored hadrons. We find the fNP values systematically below those obtained at the LHC. The fNP fraction for ψ(2S) increases with transverse momentum, whereas for the X(3872) it is constant within large uncertainties, in agreement with the LHC results. The ratio of prompt to nonprompt ψ(2S) production, (1-fNP)/fNP, decreases only slightly going from the Tevatron to the LHC, but for the X(3872), this ratio decreases by a factor of about 3. We test the soft-pion signature of the X(3872) modeled as a weakly bound charm-meson pair by studying the production of the X(3872) as a function of the kinetic energy of the X(3872) and the pion in the X(3872)π center-of-mass frame.
Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2021 Electronic address http://hdl.handle.net/11104/0315057
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