scholarly journals Measurement of the central exclusive production of charged particle pairs in proton-proton collisions at $$ \sqrt{s} $$ = 200 GeV with the STAR detector at RHIC

2020 ◽  
Vol 2020 (7) ◽  
Author(s):  
J. Adam ◽  
◽  
L. Adamczyk ◽  
J. R. Adams ◽  
J. K. Adkins ◽  
...  
Keyword(s):  
Charged Particle ◽  
Central Exclusive Production ◽  
Proton Proton ◽  
Proton Collisions ◽  
Exclusive Production ◽  
Particle Pairs ◽  
200 Gev ◽  
Proton Proton Collisions ◽  
Star Detector

scholarly journals Central exclusive production of axial-vector $f_{1}$ mesons in proton-proton collisions

2021 ◽  
Author(s):  
Piotr Lebiedowicz ◽  
Josef Leutgeb ◽  
Otto Nachtmann ◽  
Anton Rebhan ◽  
Antoni Szczurek
Keyword(s):  
Axial Vector ◽  
Central Exclusive Production ◽  
Proton Proton ◽  
Proton Collisions ◽  
Exclusive Production ◽  
Proton Proton Collisions

Exclusive production in CMS

2014 ◽  
Vol 29 (28) ◽  
pp. 1446011 ◽  
Author(s):  
J. Hollar ◽  
Keyword(s):  
Central Exclusive Production ◽  
Proton Proton ◽  
Proton Collisions ◽  
Exclusive Production ◽  
Cms Experiment ◽  
Proton Proton Collisions

This paper reviews measurements of exclusive production performed by the CMS experiment in proton–proton collisions during Run 1 of the LHC. The results include photon-induced production of μ+μ-, e+e- and W+W- pairs, and a search for strong Central Exclusive Production of γγ pairs.

scholarly journals Central exclusive production of W boson pairs in pp collisions at the LHC in hadronic and semi-leptonic final states

2020 ◽  
Vol 2020 (12) ◽  
Author(s):  
C. Baldenegro ◽  
G. Biagi ◽  
G. Legras ◽  
C. Royon
Keyword(s):  
W Boson ◽  
Hadron Collider ◽  
Large Radius ◽  
Final States ◽  
Central Exclusive Production ◽  
Proton Proton ◽  
Proton Collisions ◽  
Exclusive Production ◽  
Forward Proton ◽  
Proton Proton Collisions

Abstract We present a phenomenology study on central exclusive production of W+W− boson pairs in proton-proton collisions at the Large Hadron Collider at 14 TeV using the forward proton detectors, such as the ATLAS Forward Proton or the CMS-TOTEM Precision Proton Spectrometer detectors. Final states where at least one of the W bosons decay hadronically in a large-radius jet are considered. The latter extends previous efforts that consider solely leptonic final states. A measurement of exclusive W+W− also allows us to further constrain anomalous quartic gauge boson interactions between photons and W bosons. Expected limits on anomalous quartic gauge couplings $$ {a}_{0,C}^W $$ a 0 , C W associated to dimension-six effective operators are derived for the hadronic, semi-leptonic, and leptonic final states. It is found that the couplings can be probed down to one-dimensional values of $$ {a}_0^W=3.7\times {10}^{-7}{\mathrm{GeV}}^{-2} $$ a 0 W = 3.7 × 10 − 7 GeV − 2 and $$ {a}_C^W=9.2\times {10}^{-7}{\mathrm{GeV}}^{-7} $$ a C W = 9.2 × 10 − 7 GeV − 7 at 95% CL at an integrated luminosity of 300 fb−1 by combining all final states, compared to values of about $$ {a}_0^W=4\times {10}^{-6}{\mathrm{GeV}}^{-2} $$ a 0 W = 4 × 10 − 6 GeV − 2 and $$ {a}_C^W=1\times {10}^{-5}{\mathrm{GeV}}^{-2} $$ a C W = 1 × 10 − 5 GeV − 2 at 95% CL expected for the leptonic channel alone.

scholarly journals Central Exclusive Production at LHCb

2019 ◽  
Vol 64 (7) ◽  
pp. 595
Author(s):  
C. Van Hulse
Keyword(s):  
Theoretical Calculations ◽  
Lhcb Collaboration ◽  
Central Exclusive Production ◽  
Proton Proton ◽  
Proton Collisions ◽  
Exclusive Production ◽  
8 Tev ◽  
Gluon Distributions ◽  
Bjorken X ◽  
Proton Proton Collisions

The LHCb collaboration has measured central exclusive production of J/ф, ф(2S), and ϒ mesons as well as J/фJ/ф, J/фф(2S), ф(2S)ф(2S), and xcxc meson pairs in proton-proton collisions. The analyses of ϒ and charmonium pairs are performed at the centre-of-mass energies of 7 TeV and 8 TeV, and those of J/ф and ф(2S) are done at 7 TeV and 13 TeV. The analysis at 13 TeV involves the use of new shower counters. These allow a reduction in the background by vetoing events with activity in an extended region in rapidity. The measurements of central exclusive production at LHCb are sensitive to gluon distributions for Bjorken-x values down to 2×10−6 (at 13 TeV). An overview of the LHCb results is presented and compared to existing measurements of other experiments and theoretical calculations.

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