Matches in SemOpenAlex for { <https://semopenalex.org/work/W4310374713> ?p ?o ?g. }
- W4310374713 abstract "We present the analytic expressions for the two-loop form factors for the production or decay of pseudo-scalar quarkonia, in a scheme where the quarks are produced at threshold. We consider the two-loop amplitude for the process $gamma gamma leftrightarrow {^1S_0^{[1]}}$, that was previously known only numerically, as well as for the processes $gg leftrightarrow {^1S_0^{[1]}}$, $gamma g leftrightarrow {^1S_0^{[8]}}$ and $gg leftrightarrow {^1S_0^{[8]}}$, which have not been computed before. The two-loop corrections to $gg leftrightarrow {^1S_0^{[1]}}$ are the last missing ingredients for a full NNLO calculation of $eta_Q$ hadro-production. We discuss how the singularity structure of the amplitudes is affected by the threshold kinematics, which in particular introduces Coulomb singularities. In this context, we first show how the usual structure of the infrared singularities degenerates at threshold kinematics, and then extract the anomalous dimensions governing the Coulomb singularities for colour-singlet and octet channels, the latter being presented here for the first time. We give high-precision numerical results for the hard functions, which can be used for phenomenological studies of $eta_Q$ production and decay at NNLO." @default.
- W4310374713 created "2022-12-10" @default.
- W4310374713 creator A5002832104 @default.
- W4310374713 creator A5007209869 @default.
- W4310374713 creator A5035905199 @default.
- W4310374713 creator A5058702281 @default.
- W4310374713 date "2023-02-27" @default.
- W4310374713 modified "2023-10-14" @default.
- W4310374713 title "Two-loop form factors for pseudo-scalar quarkonium production and decay" @default.
- W4310374713 cites W1561888719 @default.
- W4310374713 cites W1590949154 @default.
- W4310374713 cites W1615280333 @default.
- W4310374713 cites W1644842023 @default.
- W4310374713 cites W1782855883 @default.
- W4310374713 cites W1844190151 @default.
- W4310374713 cites W1935113793 @default.
- W4310374713 cites W1943777523 @default.
- W4310374713 cites W1973797126 @default.
- W4310374713 cites W1974448034 @default.
- W4310374713 cites W1974949380 @default.
- W4310374713 cites W1990343294 @default.
- W4310374713 cites W1994265177 @default.
- W4310374713 cites W2001805773 @default.
- W4310374713 cites W2004659613 @default.
- W4310374713 cites W2008524525 @default.
- W4310374713 cites W2026692681 @default.
- W4310374713 cites W2027937281 @default.
- W4310374713 cites W2031235034 @default.
- W4310374713 cites W2031842954 @default.
- W4310374713 cites W2033271366 @default.
- W4310374713 cites W2034537055 @default.
- W4310374713 cites W2039334373 @default.
- W4310374713 cites W2039949119 @default.
- W4310374713 cites W2041561932 @default.
- W4310374713 cites W2044921382 @default.
- W4310374713 cites W2048489121 @default.
- W4310374713 cites W2057259806 @default.
- W4310374713 cites W2063181580 @default.
- W4310374713 cites W2070363691 @default.
- W4310374713 cites W2080332912 @default.
- W4310374713 cites W2081799577 @default.
- W4310374713 cites W2085774061 @default.
- W4310374713 cites W2098166500 @default.
- W4310374713 cites W2102521228 @default.
- W4310374713 cites W2108813208 @default.
- W4310374713 cites W2110836051 @default.
- W4310374713 cites W2111519623 @default.
- W4310374713 cites W2119978219 @default.
- W4310374713 cites W2122468674 @default.
- W4310374713 cites W2125707848 @default.
- W4310374713 cites W2130777530 @default.
- W4310374713 cites W2133238133 @default.
- W4310374713 cites W2162127797 @default.
- W4310374713 cites W2170635564 @default.
- W4310374713 cites W2230653695 @default.
- W4310374713 cites W2736495174 @default.
- W4310374713 cites W2768186182 @default.
- W4310374713 cites W2970982648 @default.
- W4310374713 cites W3049116843 @default.
- W4310374713 cites W3092426905 @default.
- W4310374713 cites W3098569141 @default.
- W4310374713 cites W3101767126 @default.
- W4310374713 cites W3102753365 @default.
- W4310374713 cites W3104723885 @default.
- W4310374713 cites W3170456571 @default.
- W4310374713 cites W3183075457 @default.
- W4310374713 cites W3192912711 @default.
- W4310374713 cites W4093228 @default.
- W4310374713 cites W4297154127 @default.
- W4310374713 cites W4307054523 @default.
- W4310374713 doi "https://doi.org/10.1007/jhep02(2023)250" @default.
- W4310374713 hasPublicationYear "2023" @default.
- W4310374713 type Work @default.
- W4310374713 citedByCount "1" @default.
- W4310374713 countsByYear W43103747132023 @default.
- W4310374713 crossrefType "journal-article" @default.
- W4310374713 hasAuthorship W4310374713A5002832104 @default.
- W4310374713 hasAuthorship W4310374713A5007209869 @default.
- W4310374713 hasAuthorship W4310374713A5035905199 @default.
- W4310374713 hasAuthorship W4310374713A5058702281 @default.
- W4310374713 hasBestOaLocation W43103747131 @default.
- W4310374713 hasConcept C109214941 @default.
- W4310374713 hasConcept C121332964 @default.
- W4310374713 hasConcept C12843 @default.
- W4310374713 hasConcept C134306372 @default.
- W4310374713 hasConcept C139719470 @default.
- W4310374713 hasConcept C147120987 @default.
- W4310374713 hasConcept C16171025 @default.
- W4310374713 hasConcept C162324750 @default.
- W4310374713 hasConcept C180205008 @default.
- W4310374713 hasConcept C2524010 @default.
- W4310374713 hasConcept C2778348673 @default.
- W4310374713 hasConcept C2779985612 @default.
- W4310374713 hasConcept C33923547 @default.
- W4310374713 hasConcept C37914503 @default.
- W4310374713 hasConcept C47085818 @default.
- W4310374713 hasConcept C57691317 @default.
- W4310374713 hasConcept C62520636 @default.
- W4310374713 hasConcept C7602139 @default.
- W4310374713 hasConcept C9342510 @default.