Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-02-27
Phys.Rev.D81:114014,2010
Physics
High Energy Physics
High Energy Physics - Phenomenology
69 pages, 12 figures, 2 tables. v2: Version published in Physical Review D
Scientific paper
10.1103/PhysRevD.81.114014
We present factorization theorems for two exclusive heavy-quarkonium production processes: production of two quarkonia in e^+e^- annihilation and production of a quarkonium and a light meson in B-meson decays. We describe the general proofs of factorization and supplement them with explicit one-loop analyses, which illustrate some of the features of the soft-gluon cancellations. We find that violations of factorization are generally suppressed relative to the factorized contributions by a factor v^2m_c/Q for each S-wave charmonium and a factor m_c/Q for each L-wave charmonium with L>0. Here, v is the velocity of the heavy quark or antiquark in the quarkonium rest frame, Q=sqrt{s} for e^+e^- annihilation, Q=m_B for B-meson decays, sqrt{s} is the e^+e^- center-of-momentum energy, m_c is the charm-quark mass, and m_B is the B-meson mass. There are modifications to the suppression factors if quantum-number restrictions apply for the specific process.
Bodwin Geoffrey T.
Lee Jungil
Tormo Xavier Garcia i.
No associations
LandOfFree
Factorization in exclusive quarkonium production does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Factorization in exclusive quarkonium production, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Factorization in exclusive quarkonium production will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-629185