An Updated Study for ${\rm Y}$ Production and Polarization at the Tevatron and LHC

Abstract

Following the nonrelativistic QCD factorization scheme, by taking latest available measurement on ${\chi }_b(3P)$ into consideration, we present an updated study on the yield and polarization of ${\rm Y}(1S,2S,3S)$ hadroproduction, and the fractions of ${\chi }_b(mP)$ feed-down in ${\rm Y}(nS)$ production at QCD next-to-leading order. In the fitting, three schemes are applied with different choice of ${\chi }_b(mP)$ feed-down ratios and NRQCD factorization scale. The results can explain the measurements on yield very well as in our previous work. The polarization puzzle to ${\rm Y}(3S)$ is now solved by considering the ${\chi }_b(3P)$ feed-down contributions. The ratio of $\sigma [{\chi }_{b2}(1P)]/\sigma [{\chi }_{b1}(1P)]$ measurements from CMS can also be reproduced in our prediction. Among the different schemes, the results show little difference, but there are sizeable difference for the fitted long-distance color-octet matrix elements. It may bring large uncertainty when the values are applied in other experiments such as in $ee,ep$ colliders.

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Cited by in corpus (28)

• New Observables in Inclusive Production of Quarkonia
• Production and polarization of prompt $J/\psi$ in the improved color evaporation model using the $k_T$-factorization approach
• Double-quarkonium production at a fixed-target experiment at the LHC (AFTER@LHC)
• Measurement of ${\rm Y}$ production in $pp$ collisions at $\sqrt{s}$= 13 TeV
• Complete Study of Hadroproduction of a ${\rm Y}$ Meson Associated with a Prompt $J/\psi$
• Bottomonia production and polarization in the NRQCD with $k_T$-factorization. I: ${\rm Y}(3S)$ and ${\chi }_b(3P)$ mesons
• Measurement of the ${\rm Y}$ polarizations in $pp$ collisions at $\sqrt{s}$=7 and 8TeV
• Heavy quarkonium photoproduction in ultrarelativistic heavy ion collisions
• Production and polarization of prompt ${\rm Y}$($n$S) in the improved color evaporation model using the $k_T$-factorization approach
• In-medium P-wave quarkonium from the complex lattice QCD potential
• Prospects for quarkonium studies at the high-luminosity LHC
• The complete study on polarization of ${\rm Y}(nS)$ hadroproduction at QCD next-to-leading order
• Next-to-leading-order QCD corrections to the decay of $Z$ boson into ${\chi }_c({\chi }_b)$
• Predictions for $h_c$ and $h_b$ production at the LHC
• The complete study on the inclusive production of Υ + γ at the LHC
• Bottomonium production and polarization in the NRQCD with $k_T$-factorization. III: ${\rm Y}(1S)$ and ${\chi }_b(1P)$ mesons
• Bottomonia production and polarization in the NRQCD with $k_T$-factorization. II: ${\rm Y}(2S)$ and ${\chi }_b(2P)$ mesons
• Next-To-Leading Order Differential Cross-Sections for $J/\psi$, $\psi (2S)$ and ${\rm Y}$ Production in Proton-Proton Collisions at a Fixed-Target Experiment using the LHC Beams (AFTER@LHC)
• Inclusive productions of ${\rm Y}(1S,2S,3S)$ and ${\chi }_b(1P,2P,3P)$ via the Higgs boson decay
• Comprehensive studies of ${\rm Y}$ inclusive production in $Z$ boson decay
• ${\chi }_{c1}$ and ${\chi }_{c2}$ polarization as a probe of color octet channel
• The studies on $Z\to {\rm Y}(1S)+g+g$ at the next-to-leading-order QCD accuracy
• Production of bottomonia states in proton+proton and heavy-ion collisions
• Inclusive production of heavy quarkonium ${\eta }_Q$ via $Z$ boson decays within the framework of nonrelativistic QCD
• Rare two-body decays of the top quark into a bottom meson plus an up or charm quark
• Measurement of ${\rm Y}$ production in $pp$ collisions at $\sqrt{s}=5\mathrm{TeV}$
• Bottomonia production in p+p collisions under NRQCD formalism
• ${\rm Y}$ electroproduction at HERA, EIC, and LHeC within the nonrelativistic QCD framework