Odderon
Differential cross section for π 0 central production in proton-lead collisions due to photon-odderon (solid lines) and photon-photon (dashed line) fusion, where ffiffi ffi s p nn ¼ 8.16 TeV and ...An odderon—in theory—is a subatomic quasiparticle, meaning something that behaves enough like a particle to be considered one. First theorized back in 1973, it has eluded observation by ...Nuclear Physics B (Proc. Suppl.) 12 (1990) 331-338 North-Holland 331 ODDERON CLASSES - GENERAL CRITEI~A Jan FISCHER Inatltute of Physics, Czechoslovak Academy of Sciences, Na Slovance 2, CS-18040 Prague 8, Czechoslovakia Predictions based on axiomatic field theory are obtained from ~ assumptlon that the observed difference between the pp and pp elastic scattering is caused by an "odderon-llke ...
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The Odderon helped explain the mysterious differences in the likelihoods that a proton would have a direction-changing interaction with another proton, versus that a proton would have a one of ...Odderon-Pomeron interference. Odderon-Pomeron interference. Odderon-Pomeron interference. Odderon-Pomeron interference. Carlos Merino. 1999, Physics Letters B. See Full PDF Download PDF.Odderon exchEnge from ePEstic scEttering differences between pp End p¯ dEtE Et 1.96TeV End from pp forwErd scEttering meEsurements. Phys. Rev. Lett. The Odderon, a charge-conjugation-odd partner of the Pomeron, has been a puzzle ever since its introduction in 1973. The Pomeron describes a colorless exchange with vacuum quantum numbers in the t-channel of hadronic scattering at high energies. The concept was originally formulated for the non-perturbative regime of Quantum …We propose to study an odderon exchange in the "pure" processes γγ→MM′, γγ→M jet, ep→eMp (M=π 0, η, η′, η c, etc. Corresponding cross sections with the "bare" odderon as the reggezied three-gluon exchange are estimated.At HERA energies in the process ep→e0 − p one should observe a steep growth (by an order of magnitude) of the "odderon" cross section.Phenomenological studies of odderon effects are shortly reviewed. Special emphasis is devoted to a recent study of the exclusive production of J/psi or Upsilon in pp and bar p p collisions, where ...Foto: CERN. El Centro Europeo de Física de Partículas (CERN) anunció el descubrimiento del odderón una combinación de tres partículas fundamentales gluones que había sido mencionada en teorías hace casi 50 años pero que no había podido identificarse hasta ahora en condiciones reales. “Este resultado prueba las características más ... Title: Odderon Searches 1 Vth Workshop on Small-x and Diffractive Physics Odderon Searches and Hadronic Final States in Diffractive Scattering at HERA Karlheinz Meier Kirchhoff-Institut für Physik Ruprecht-Karls-Universität Heidelberg 2 Language of Diffraction in a factorized view Q2 (momentum transfer describing photon virtuality Mi (inclusive final …Indeed, in [5] the odderon was shown to generate single transverse spin asymmetry for the quark jet production in scattering of a quark on a transversely polarized nucleon, further suggesting the ...The TOTEM collaboration at CERN has uncovered possible evidence for a subatomic three-gluon compound called an odderon, first predicted in 1973. The result derives from precise measurements of the probability of proton–proton collisions at high energies, and has implications for our understanding of data produced by the LHC and future colliders.The perturbative QCD odderon exists in two different states. The first one was proposed as the \(C=-1\) eigenstate of the Hamiltonian for three reggeized gluons (the simplest of the series of the so-called BKP states [1,2,3]).Its properties and conformal invariance were discussed very long ago [4, 5].After several attempts to numerically …1 The Odderon is the odd-signature (C =−1) partner of the even-signature (C = 1) Pomeron, see for reviews [5-7]. It is a firm prediction of QCD [8,9], but so far the experimental evidence for its existence is not definitive. There have been various proposals on how to search for Odderon-exchange effects in high energy collisions. In ...Within the context of quantum chromodynamics (QCD), P is thought to represent the exchange of a family of colourless crossing-even states, with two-gluon exchange being the simplest contributor [8]. A complementary Regge trajectory, known now as the odderon, with α O ( 0) ≃ 1 but η O = − 1, has been considered as a possible explanation ...We discuss the definition and the energy evolution of scattering amplitudes with C-odd ("odderon") quantum numbers within the effective theory for the color glass condensate (CGC) endowed with the functional, JIMWLK, evolution equation.We explicitly construct gauge-invariant amplitudes describing multiple odderon exchanges in the scattering between the CGC and two types of projectiles: a ...Mar 19, 2021 · Roman Pasechnik. Credit: Gunnar Ingelman For 50 years, the research community has been hunting unsuccessfully for the so-called Odderon particle. Now, a Swedish-Hungarian research group has... We describe an analysis comparing the pp[over ¯] 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 cross sections, ex …evolved Odderon at a electron-ion collider. Sanjin Benić, Davor Horvatić, Abhiram Kaushik, Eric Andreas Vivoda. We compute exclusive ηc production in high energy electron-nucleon and electron-nucleus collisions that is sensitive to the Odderon. In perturbative QCD the Odderon is a C -odd color singlet consisting of at least three t -channel ...Csörgő brought up that the potential existence of Odderon was suggested in 1973, but the particle accelerators available at the time had not yet developed to the point where they could allow for its discovery. 48 years later, Hungarian researchers created a new method of re-analyzing and screening previously reported experiments and data, …The Odderon could also be found by ATLAS experiment at LHC by performing a high-precision measurement of the real part of the hadron elastic scattering amplitude at small t. 1 Unit´e de Recherche des Universit´es Paris 6 et Paris 7, Associ´ee au CNRS 1 Introduction The Odderon is defined as a singularity in the complex J-plane, located at J ...The TOTEM collaboration at the LHC, together with the DØ collaboration at the Tevatron collider at Fermilab, have announced the discovery of the odderon – an elusive state of three fundamental particles called gluons that was predicted almost 50 years ago. The result was presented on Friday 5 March during a meeting at CERN, and follows the joint submission in December 2020 of a CERN ...To summarize, we compute sea quark Sivers function in terms of the C-odd part of the dipole amplitude which is identified as spin dependent odderon inside a transversely polarized target. Due to the C-odd nature of odderon, the computed quark Sivers function and anti-quark Sivers function are the same in size, but differ by a minus sign.
Odderon to di ractiv e pro duction of c harmed jets. By forming a harge asymmetry in the energy of c harmed jets, w e can determine relativ imp ortance P omeron (C =+) and the Odderon =) con tributions, their in terference, th us pro viding a new exp erimen tal test of the separate existence these t w o ob jects. Since asymmetry measures the ...Odderon (O) [11{15], although its existence is not established yet experimentally (b). Exchanges of the pseudoscalar (PS) (ˇ0; ) and scalar (S) (a 0;f 0) mesons are considered in the tchannel (c). The direct ˚-meson radiations in the sand uchannels via the proton and its resonances are also available (dand e). In what follows, the explicit ...The situation is not that simple: elastic scattering at low energies can be due to exchanges of additional particles to pomeron/odderon: ρ, ω, φ, reggeons...However, when combining this signal with the Odderon signals from the ReBB model in the 0.37 $\leq -t \leq$ 1.2 GeV$^2$ four-momentum-transfer range at $\sqrt{s} = $ 1.96, 2.76 and 7 TeV, it turns ...The TOTEM collaboration at the LHC, together with the DØ collaboration at the Tevatron collider at Fermilab, have announced the discovery of the odderon – an elusive state of three fundamental particles called gluons that was predicted almost 50 years ago. The result was presented on Friday 5 March during a meeting at CERN, and follows the joint submission in December 2020 of a CERN ...
The Odderon is the leading exchange in hadronic scattering processes at high energies in which negative charge conjugation and parity quantum numbers are transferred in the t-channel.An odderon is a particle that's even odder than its name suggests. It's a particle that isn't really a particle at all, confused yet? What we think of as particles are ……
Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. Odderon Exchange from Elastic Scattering Differences . Possible cause: In perturbative QCD the odderon is a $C$-odd color singlet consisting of at least t.
The Odderon coupling to the proton which we are using is a maximal coupling for the soft Odderon in rela- tion to the soft Pomeron. So on the one hand the ratio may be smaller than this, and on the other hand the ratio may be larger if the hard Odderon and Pomeron have a different ratio for the cou- pling to the proton. For the hard Pomeron the ...an Odderon exchange is usually associated with a quarkless odd-gluon (e.g. three-gluon, to the lowest order) bound state such as a vector glueball, and a vast literature is devoted to
A CLASSICAL ODDERON IN HIGH ENEGY QCD Raju Venugopalan BNL RBRC Workshop, Sept. 27th-29th, 2005. Outline of talk: • The ground state of a large nucleus at high energies • Random walks & Path Integrals for SU(N) quarks • A "classical'' Odderon • Results • Summary and Outlook Work in collaboration with Sangyong Jeon (McGill/RBRC) • A CLASSICAL ODDERON IN QCD AT HIGH ENERGIES.an Odderon exchange is usually associated with a quarkless odd-gluon (e.g. three-gluon, to the lowest order) bound state such as a vector glueball, and a vast literature is devoted to
The TOTEM collaboration at the LHC, together with the 2 Searching for evidence of Odderon exchange Although in QCD we expect both Pomeron and Odderon exchange to contribute to scattering processes, the pre{LHC experimental quest for the Odderon has proven to be quite a challenging task, see for instance [22,24,25,30] for reviews. In particular, the contribution from OdderonIndeed, in [5] the odderon was shown to generate single transverse spin asymmetry for the quark jet production in scattering of a quark on a transversely polarized nucleon, further suggesting the ... In March 2021, the TOTEM collaboration at CERN and thThe Odderon particle is what briefly forms when p AN resulting from pomeron-odderon interference. The solid line is our numerical result, and the boxes show the E704 data for AN in p ↑ p → π + X [1]. The maximal Odderon approach [ 1 ], being phenomenologi Odderon is a cousin of Pomeron which emerged already about half century ago in the so called Regge theory to explain the logarithmically rising (rather than decreasing) cross sections in proton ... The Odderon, a charge-conjugation-odd partner ofOdderon exchange dominates except at very small tMar 22, 2021 · Physics 22 March 2021 By David Nield TOTEM It also led to the recent discovery of the odderon by the D0 and TOTEM collaborations [5, 7] by comparing the elastic dσ /dt cross sections in pp and in pp collisions at √ s =1.96 TeV ... In QCD, Odderon exchange corresponds to the t-channel exchange of Add to this the fact that the Odderon interacts oppositely with antiparticles than with particles, the way to discover of the Odderon is open. Any significant difference between elastic particle-particle scattering and elastic particle-antiparticle scattering in the diffractive dip region at the same collision energy is evidence for the Odderon. Odderon exchange dominates except at very small transverse mom[Below we will try to trace almost a half-of-century hisPossible Odderon exchange in pp and elastic collisions at t In particular, there is a long history of studying the possibility of searching for the Odderon via the exclusive photoproduction of C-even mesons (such as the f 2 ); see for example [10][11][12 ...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.