Inclusive prompt $\chi _{c,b}(1^{++})$ production at the LHC

Shuvaev, A.G.; Khoze, V.A.; Martin, A.D.; Ryskin, M.G.

doi:10.1140/epjc/s10052-015-3840-8

Inclusive prompt $\chi _{c,b}(1^{++})$ production at the LHC

A.G. Shuvaev
(
- St. Petersburg, INP
)
,
V.A. Khoze
(
- Durham U., IPPP and
- St. Petersburg, INP
)
,
A.D. Martin
(
- Durham U., IPPP
)
,
M.G. Ryskin
(
- Durham U., IPPP and
- St. Petersburg, INP
)

Jun 29, 2015

14 pages

Published in:

Eur.Phys.J.C 75 (2015) 12, 616

Published: Dec 28, 2015

e-Print:

1506.08618 [hep-ph]

DOI:

10.1140/epjc/s10052-015-3840-8

Report number:

IPPP-15-40,
DCPT-15-80

View in:

ADS Abstract Service

reference search4 citations

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Abstract: (Springer)

We study the prompt production of the

\chi _c(1^+)

and

\chi _b(1^+)

mesons at high energies. Unlike

\chi (0^+,2^+)

production,

\chi (1^+)

mesons cannot be created at LO via the fusion of two on-mass-shell gluons, that is,

gg\rightarrow \chi _{c,b}(1^+)

are not allowed. However, the available experimental data show that the cross sections for

\chi _c(1^+)

and

\chi _c(2^+)

are comparable. We therefore investigate four other

\chi (1^+)

production mechanisms: namely, (i) the standard NLO process

gg\rightarrow \chi _{c,b}(1^+)+g

, (ii) via gluon virtuality, (iii) via gluon reggeisation and, finally, (iv) the possibility to form

\chi _{c,b}(1^+)

by the fusion of three gluons, where one extra gluon comes from another parton cascade, as in the Double Parton Scattering processes.

Note:

14 pages, 3 figures, two typos: one above eq.(25), other in (29). The version in EPJC is correct

CERN LHC Coll
p p: scattering
gluon: fusion
gluon: Regge
parton: cascade
parton: multiple scattering
selection rule
chi/c1(3510): direct production
chi/c1(3510): inclusive production
chi/b1(9890): direct production

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Figures(3)

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Inclusive prompt χc,b(1++)\chi _{c,b}(1^{++})χc,b​(1++) production at the LHC

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Inclusive prompt $\chi _{c,b}(1^{++})$ production at the LHC