C entral Ex clusive M eson P air P roduction in the P erturbative R egime.
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Central Exclusive Meson Pair Production in the Perturbative Regime. V.A. Khoze (IPPP, Durham ) (KRYSTHAL collaboration)
description
C entral Ex clusive M eson P air P roduction in the P erturbative R egime. (KRYSTHAL collaboration). V.A. Khoze ( IPPP, Durham ). This Workshop: (talks by Piotr & Antoni). On the same pasture: activity by Cracow group Antoni Szczurek et al. ( Fernando Marvilla, 2008). ( or LRGs ). - PowerPoint PPT Presentation
Transcript of C entral Ex clusive M eson P air P roduction in the P erturbative R egime.
Central Exclusive Meson Pair Production in the Perturbative Regime.
V.A. Khoze (IPPP, Durham )
(KRYSTHAL collaboration)
On the same pasture:activity by Cracow group Antoni Szczurek et al
(Fernando Marvilla, 2008)
This Workshop:(talks by Piotr & Antoni)
CEP is reported by LHCb (DIS-11)
new CDF CEP results ( low x-11,DIS-11All measurements in agreement with Durham group (pre)dictions.
CEP-spin-parity filter (KMR-00,KKMR-03)
(or LRGs)
(KMRS-04)(LKRS-10)
Now 43 events
(now proved to be very small (CDF) in agreement with our expectations)
(to be published in PRL soon)
C-parity)
NLO effects-factor of 1.55
(HKRS in preparation)
Currently theoret. uncertainties are under further revision.
(M.Benayoun,V.Chernyak,-1990)
40 diagrams (4 basic)
(explicit calculation)
is this easy to understand ?
is this easy to understand ?
currently popular (among the more formal community) MHV- technique
g
g
(KRYSTHAL coll.- 09-11)
New CDF data nicely confirm this !)
(K-factor,..)
(our new results will be available soon)
arXiv:1110.4787
Acta Phys.Polon.B42:1961,2011 R..Staszewski et al,
(currently under study)
(preliminary)
New CDF data confirm both Durham predictions for CEPand strong suppression of the
(preliminary)
PT expectations if no proton tagging
Violation of
-momentum transfer through the ‘digluon Pomeron’
In the low mass region: is small.
Non-relativistic effects for spin 2.
Non-PT contribution ( for spin 1, still ~ ).
Spin-2 quarkonium suppression is easier to violate!
for CEP (KMRS-04)
ppY+X+Z
