Searching for Odderon in Exclusive Reactions
Keywords:exclusive reactions, meson, Regge physics, pomeron, odderon, LHC
We discuss the possibility to use the pp → ppфф process in identifying the odderon exchange. So far, there is no unambiguous experimental evidence for the odderon, the charge conjugation C = −1 counterpart of the C = +1 pomeron. Last year, the results of the TOTEM collaboration suggest that the odderon exchange can be responsible for a disagreement of theoretical calculations and the TOTEM data for the elastic proton-proton scattering. Here, we present recent studies for the central exclusive production (CEP) of фф pairs in proton-proton collisions. We consider the pomeron-pomeron fusion to фф (PP → фф) through the continuum processes, due to the ^t- and ^u-channel reggeized ф-meson, photon, and odderon exchanges, as well as through the s-channel resonance process (PP → f2(2340) → фф). This f2 state is a candidate for a tensor glueball. The amplitudes for the processes are formulated within the tensor-pomeron and vector-odderon approach. Some model parameters are determined from the comparison to the WA102 experimental data. The odderon exchange is not excluded by the WA102 data for high фф invariant masses. The measurement of large Mфф or Ydiff events at the LHC would therefore suggest the presence of the odderon exchange. The process is advantageous, as here the odderon does not couple to protons.
T. Aaltonen et al. (CDF Collaboration). Measurement of central exclusive п+п? production in pp collisions at vs = 0.9 and 1.96 TeV at CDF. Phys. Rev. D 91, 091101 (2015).
CMS Collaboration. Measurement of total and differential cross sections of central exclusive п+п? production in proton-proton collisions at 5.02 and 13 TeV. CMS-PAS-FSQ-16-006.
R. Sikora (STAR Collaboration). Recent results on Central Exclusive Production with the STAR detector at RHIC. arXiv:1811.03315 [hep-ex].
R. Staszewski, P. Lebiedowicz, M. Trzebinski, J. Chwastowski, A. Szczurek. Exclusive п+п? production at the LHC with forward proton tagging. Acta Phys. Polon. B 42, 1861 (2011). https://doi.org/10.5506/APhysPolB.42.1861
L. Lukaszuk, B. Nicolescu. A possible interpretation of pp rising total cross-sections. Lett. Nuovo Cim. 8, 405 (1973). https://doi.org/10.1007/BF02824484
A. Breakstone. Measurement of pp and pp elastic scattering in the dip region at vs = 53 GeV. Phys. Rev. Lett. 54, 2180 (1985).
TOTEM Collaboration. First determination of the p parameter at vs = 13 TeV - probing the existence of a colourless three-gluon bound state. arXiv:1812.04732 [hep-ex]; arXiv:1812.08610 [hep-ex].
A. Sch?afer, L. Mankiewicz, O. Nachtmann. Double-diffractive J/ф and
C. Ewerz. The odderon in quantum chromodynamics. arXiv:0306137 [hep-ph].
L. Adamczyk et al. (STAR Collaboration). Single spin asymmetry AN in polarized proton-proton elastic scattering at vs = 200 GeV. Phys. Lett. B 719, 62 (2013).
A. Bolz, C. Ewerz, M. Maniatis, O. Nachtmann, M. Sauter, A. Schoning. Photoproduction of п+п? pairs in a model with tensor-pomeron and vector-odderon exchange. JHEP 1501, 151 (2015). https://doi.org/10.1007/JHEP01(2015)151
P. Lebiedowicz, O. Nachtmann, A. Szczurek. Exclusive central diffractive production of scalar and pseudoscalar mesons; tensorial vs. vectorial pomeron. Annals Phys. 344, 301 (2014). https://doi.org/10.1016/j.aop.2014.02.021
P. Lebiedowicz, O. Nachtmann, A. Szczurek. p0 and Drell-Soding contributions to central exclusive production of п+п? pairs in proton-proton collisions at high energies. Phys. Rev. D 91, 074023 (2015). https://doi.org/10.1103/PhysRevD.91.074023
P. Lebiedowicz, O. Nachtmann, A. Szczurek. Central exclusive diffractive production of the п+п? continuum, scalar, and tensor resonances in pp and pp scattering within the tensor Pomeron approach. Phys. Rev. D 93, 054015 (2016). https://doi.org/10.1103/PhysRevD.93.054015
P. Lebiedowicz, O. Nachtmann, A. Szczurek. Exclusive diffractive production of п+п?п+п? via the intermediate qq and pp states in proton-proton collisions within tensor Pomeron approach. Phys. Rev. D 94, 034017 (2016). https://doi.org/10.1103/PhysRevD.94.034017
P. Lebiedowicz, O. Nachtmann, A. Szczurek. Central production of p0 in pp collisions with single proton diffractive dissociation at the LHC. Phys. Rev. D 95, 034036 (2017). https://doi.org/10.1103/PhysRevD.95.034036
P. Lebiedowicz, O. Nachtmann, A. Szczurek. Central exclusive diffractive production of pp pairs in proton-proton collisions at high energies. Phys. Rev. D 97, 094027 (2018). https://doi.org/10.1103/PhysRevD.97.094027
P. Lebiedowicz, O. Nachtmann, A. Szczurek. Towards a complete study of central exclusive production of п+п? pairs in proton-proton collisions within the tensor Pomeron approach. Phys. Phys. D 98, 014001 (2018). https://doi.org/10.1103/PhysRevD.98.014001
P. Lebiedowicz, O. Nachtmann, A. Szczurek. Extracting the pomeron-pomeron-f2(1270) coupling in the pp > ppп+п? reaction through angular distributions of the pions. arXiv:1901.07788 [hep-ph].
P. Lebiedowicz, O. Nachtmann, A. Szczurek. Central exclusive diffractive production of K+K-K+K- via the intermediate фф state in proton-proton collisions. Phys. Rev. D 99, 094034 (2019). https://doi.org/10.1103/PhysRevD.99.094034
C. Ewerz, M. Maniatis, O. Nachtmann. A model for soft high-energy scattering: Tensor pomeron and vector odderon. Annals Phys. 342, 31 (2014). https://doi.org/10.1016/j.aop.2013.12.001
C. Ewerz, P. Lebiedowicz, O. Nachtmann, A. Szczurek. Helicity in proton-proton elastic scattering and the spin structure of the pomeron. Phys. Lett. B 763, 382 (2016). https://doi.org/10.1016/j.physletb.2016.10.064
A. Etkin et al. Increased statistics and observation of the gT, gT', and gT?? 2++ resonances in the Glueball enhanced channel п?p >
D. Aston et al. Strangeonium production from LASS. Nucl. Phys. Proc. Suppl. 21, 5 (1991). https://doi.org/10.1016/0920-5632(91)90229-8
D. Barberis et al. (WA102 Collaboration). A Study of the centrally produced phi phi system in pp interactions at 450-GeV/c. Phys. Lett. B 432, 436 (1998).
M. Ablikim et al. (BESIII Collaboration). Observation of pseudoscalar and tensor resonances in J/ф > yфф. Phys. Rev. D 93, 112011 (2016).
C.J. Morningstar, M.J. Peardon. Glueball spectrum from an anisotropic lattice study. Phys. Rev. D 60, 034509 (1999). https://doi.org/10.1103/PhysRevD.60.034509
R. Fiore, L. Jenkovszky, R. Schicker. Resonance production in Pomeron-Pomeron collisions at the LHC. Eur. Phys. J. C 76, 38 (2016). https://doi.org/10.1140/epjc/s10052-015-3846-2
R. Fiore, L. Jenkovszky, R. Schicker. Exclusive diffractive resonance production in proton-proton collisions at high energies. Eur. Phys. J. C 78, 468 (2018). https://doi.org/10.1140/epjc/s10052-018-5907-9
A. Donnachie, H.G. Dosch, P.V. Landshoff, O. Nachtmann. Pomeron Physics and QCD (Cambridge Univ. Press, 2002). https://doi.org/10.1017/CBO9780511534935
P.D.B. Collins. Regge Theory and Particle Physics (Univ. of Durham, 1970).
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