# Odderon Exchange from Elastic Scattering Differences between pp and pp$^{-}$ Data at 1.96 TeV and from pp Forward Scattering Measurements

Abazov, V. M.; Abbott, B.; Acharya, B. S.; Adams, M.; Adams, T.; Agnew, J. P.; Alexeev, G. D.; Alkhazov, G.; Alton, A.; Alves, G. A.; Antchev, G.; Askew, A.; Aspell, P.; Assis Jesus, A. C. S.; Atanassov, I.; Atkins, S.; Augsten, K.; Aushev, V.; Aushev, Y.; ... mehr

## Abstract:

We describe an analysis comparing the p¯p elastic cross section as measured by the D0 Collaboration at a center-of-mass energy of 1.96 TeV to that in pp collisions as measured by the TOTEM Collaboration at 2.76, 7, 8, and 13 TeV using a model-independent approach. The TOTEM crosssections, extrapolated to a center-of-mass energy of √s=1.96  TeV, are compared with the D0 measurement in the region of the diffractive minimum and the second maximum of the pp cross section. The two data sets disagree at the 3.4σ level and thus provide evidence for the t-channel exchange of a colorless, C-odd gluonic compound, also known as the odderon. We combine these results with a TOTEM analysis of the same C-odd exchange based on the total cross section and the ratio of the real to imaginary parts of the forward elastic strong interaction scatteringamplitude in pp scattering for which the significance is between 3.4σ and 4.6σ. The combined significance is larger than 5σ and is interpreted as the first observation of the exchange of a colorless, C-odd gluonic compound.

 Zugehörige Institution(en) am KIT Steinbuch Centre for Computing (SCC)Universität Karlsruhe (TH) – Zentrale Einrichtungen (Zentrale Einrichtungen) Publikationstyp Zeitschriftenaufsatz Publikationsjahr 2021 Sprache Englisch Identifikator ISSN: 0031-9007, 1079-7114, 1092-0145 KITopen-ID: 1000137033 HGF-Programm 46.21.02 (POF IV, LK 01) Cross-Domain ATMLs and Research Groups Erschienen in Physical Review Letters Verlag American Physical Society (APS) Band 127 Heft 6 Seiten Art.-Nr.: 062003 Nachgewiesen in Web of ScienceDimensionsScopus
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