Next-to-leading-order nonrelativistic QCD disfavors the interpretation of X(3872) as chi(c1)(2P)
- Author(s)
- Mathias Butenschoen, Zhi-Guo He, Bernd A. Kniehl
- Abstract
We study χc1(2P)-inclusive hadroproduction at next-to-leading-order (NLO), both in αs and v2, within the factorization formalism of nonrelativistic quantum chromodynamics (NRQCD), including the color-singlet P1[1]3 and color-octet S1[8]3 cc¯ Fock states as well as the mixing of the latter with the D1[8]3 state. Assuming the recently discovered X(3872) hadron to be the JPC=1++ charmonium state χc1(2P),
we perform a fit to the cross sections measured by the CDF, CMS, and
LHCb Collaborations. We obtain either an unacceptably high value of χ2, a value of |R′2P(0)|
incompatible with well-established potential models, or an intolerable
violation of the NRQCD velocity rules. We thus conclude that NLO NRQCD
is inconsistent with the hypothesis X(3872)≡χc1(2P).
- Organisation(s)
- Particle Physics
- External organisation(s)
- Universität Hamburg
- Journal
- Physical Review D
- Volume
- 88
- No. of pages
- 5
- ISSN
- 1550-7998
- DOI
- https://doi.org/10.1103/PhysRevD.88.011501
- Publication date
- 07-2013
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103036 Theoretical physics, 103034 Particle physics
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/nexttoleadingorder-nonrelativistic-qcd-disfavors-the-interpretation-of-x3872-as-chic12p(411bf05d-9986-4a86-a9e0-f0f0d66b0a62).html