Odderon
The TOTEM experiment (TOTal Elastic and diffractive cross section Measurement) is one of the nine detector experiments at CERN's Large Hadron Collider.The other eight are: ATLAS, ALICE, CMS, LHCb, LHCf, MoEDAL, FASER and [email protected] shares an interaction point with CMS. The detector aims at measurement of total cross section, elastic scattering, and diffraction processes.Citation: Meet the 'odderon': Large Hadron Collider experiment shows potential evidence of quasiparticle sought for decades (2018, February 1) retrieved 12 September 2023 from https://phys.org ...
Did you know?
In the first part of the talk, after going through a brief overview of the LHC and the physics, we will describe the odderon discovery by the TOTEM and D0 experiments. The analysis compares the p pbar 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 ...Based on the assumption that, the Pomeron is a sum of Regge multipoles, each of which corresponds to a finite gluon ladder, we suggest a way to search the Odderon by studying the diffractive ...In this experimental observation, the TOTEM proton-proton data in the region of the diffractive minimum and maximum was extrapolated from 13, 8, 7 and 2.76 TeV to 1.96 TeV and compared this to D0 data at 1.96 TeV in the same t-range giving an odderon significance of 3.4 σ.Theory and phenomenology of the η c photo- and electroproduction is developed from the point of view of probing the odderon singularity in QCD which corresponds to the three gluon exchange mechanism. This mechanism leads to cross-sections which are independent of W 2 for the exchange of three non-interacting gluons or exhibit an increase with increasing W 2 (or 1 x) for the odderon intercept ...From Sci-News.com, March 19, 2021: Physicists from the TOTEM (TOTal cross section, Elastic scattering and diffraction dissociation Measurement) Collaboration at CERN's Large Hadron Collider (LHC) and the DØ Collaboration at Fermilab have found strong new evidence for the odderon, an elusive three-gluon state predicted almost five decades ago.Sighting the Elusive Odderon. TOTEM and D0 Collaborations. Stony Brook seminar. May 10, 2021. P. Grannis. In the late 1950's, TullioRegge derived a formalism in scattering theory, rigorously derived in non-relativistic QM, based on very general principles - analyticity, Lorentz invariance and unitarity.Here we show that in the dual description the Odderon is the Reggeized Kalb-Ramond field (B µν ) in the Neveu-Schwartz sector of closed string theory. To first order in strong coupling, the high energy contribution of Odderon is evaluated for N = 4 Super Yang-Mills by a generalization of the gravity dual analysis for Pomeron in Ref.29 Mar 2021 ... The odderon was discovered in elastic collisions between protons (TOTEM) or protons and antiprotons (D-Zero). These collisions directly relate ...The odderon exchange contribution is calculated in nonperturbative QCD, using functional integral techniques and the model of the stochastic vacuum. For the proton we assume a quark-diquark structure as suggested by the small odderon amplitude in pp and pp forward scattering. We show that odderon exchange leads to a much larger inelastic than ...the Odderon singularity as does the strong interaction amplitude described in [10]. So, the coincidence of the values of ˆseems accidental, not related with the presence or absence of the Odderon singularity as assumed in [9]. Our conclusion from this reasoning is that no speci c value of the parameter ˆcan be considered asThis is the odderon that the CERN team found evidence of. But in this special kind of collision, the number of gluons exchanged is important. If an even number of gluons are exchanged, the ...model that has Odderon amplitude. CFNS May 24-26, 2021 Wlodek Guryn 14 A shallow dip in $$̅is expected and seen in at √(= 53 GeV at the ISR and higher √(Odderon is a C=-1 partner of the Pomeron and is a solid part of QCD –three gluon exchange Eur.Phys.J.C16:499-511,2000 An odderon is a particle that's even odder than its name suggests. It's a particle that isn't really a particle at all, confused yet? What we think of as particles are usually very stable ...The scattering amplitude with spin-non-fiip and spin-flip components represented by Froissaron, Maximal Odderon as well as by standard Regge poles contributions is considered. From the fit to the data of pp and $$\\bar{p}p$$ p ¯ p scattering at high energy and not too large momentum transfers we found that this model taking into account the spin is available to describe not only the ...The odderon, on the other hand, has much more subtle signatures. This has made the hunt for the odderon so much more challenging.'' Top image: The TOTEM experiment's "Roman Pot" detectors in the Large Hadron Collider tunnel. Credit: CERN. Right image: The "money" plot showing the odderon discovery. The plot is a comparison between the D0 pp ...For the odderon, using Table 2 and k = 0.10 GeV 2, excluding the state 11 − −, the Regge trajectory is presented bellow: (15) J (m 2) ≈ (0.20 ± 0.43) + (0.17 ± 0.01) m 2 The errors come from the linear fit. This Regge trajectory for the odderon is represented in Fig. 3 (left panel) and is in agreement with [29] within the non ...This calculation uses the high energy scattering approximation and operator formalism developed by Kovchegov and Sievert to obtain a dominant contribution to the quark Sivers function coming from the spin-dependent odderon, in agreement with the results of Dong, Zhen, and Zhou.
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 toWithin 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 ...Low-x is an annual workshop whose spirit is to favour fruitful and informal discussions between experimentalists and theorists in low-x, diffractive hadronic physics and exciting problems in QCD at HERA, Tevatron and LHC. Low-x has been held since DESY (1993), then Saclay (May 1994), Cambridge (July 1995), Durham (June 1996), Madrid (June 1997 ...The odderon can be seen as the total contribution coming from all types of odd gluon exchange. It represents the involvement of all of three, five, seven or other odd number numbers of gluons. By contrast, the older model assumes a contribution from all even numbers of gluons, so it includes contributions from two, four, six or more even ...By using the model parameters, the Chew-Frautschi plot of the tensor odderon Regge trajectory is evaluated. As a result, the odderon spin-3 mass is predicted to be 3.2 GeV. In addition, the total cross-section of our model is compatible with the results from TOTEM and its extrapolation from D0 collaboration.
odderon: The hypothetical counterpart of the pomeron , carrying odd charge parity .For 50 years, the research community has been hunting unsuccessfully for the so-called Odderon particle. Now, a Swedish-Hungarian research group has …Odderon - a sharp signal at HERA. × Close Log In. Log in with Facebook Log in with Google. or. Email. Password. Remember me on this computer. or reset password. Enter the email address you signed up with and we'll email you a reset link. Need an account? Click here to sign up. Log In Sign Up. Log In ...…
Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. plural of odderon. Possible cause: In this short note, we report a di-quark model calculation for the spin dependent oddero.
Sep 10, 2018 · In other words we consider a QCD Odderon with intercept α Odd (0) = 1, as was obtained in [22], and normalization given by the parameter σ Odd. The simplified lowest α s calculation leads to σ Odd = 0.8 mb [23]. With such a small coupling of O (1 mb) the Odderon is almost invisible in Fig. 2. Recall that, for α Odd (0) = 1, Odderon ... imal Odderon approach [9, 10] with the experimental. data on forward pp and ...that carry an even larger Odderon effect. Thus, in any prac-tical terms, within the framework of the ReBB model, the Odderon signal in the limited 0.37 ≤−t ≤ 1.2GeV2 and 1.96 ≤ √ s ≤ 8 TeV kinematic region is not a probability, but a certainty. We show also that the H(x) scaling version of the ReBB model works reasonably well at 8 ...
The odderon can be seen as the total contribution coming from all types of odd gluon exchange. It represents the involvement of all of three, five, seven or other odd number numbers of gluons. By contrast, the older model assumes a contribution from all even numbers of gluons, so it includes contributions from two, four, six or more even ...Odderon asymptotics emerged for the first time in Ref. [1] and is nowadays usually associated with C = -1 exchange in t-channel. Although the studies in QCD [2, 3] (see Refs. [4, 5] for further references) support existence of C=-1 exchange (QCD Odderon), it should be stressed that such exchange need not be mandatory for the Odderon type behavior.
19 Dec 2019 ... Using the Odderon intercept. , our theore Extracting the Odderon from. and. scattering data. Andras Ster, Laszlo Jenkovszky, Tamas Csorgo. Starting from a simple empirical parametrization of the scattering amplitude, successfully describing the dip-bump structure of elastic scattering in at fixed values of , we construct a toy model interpolating between missing energy gaps to …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 ... model that has Odderon amplitude. CFNS May 24-26, 2021 Inspired by the evidence of the odderon exchange recently 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.The Odderon particle is what briefly forms when protons collide in high-energy collisions, and in some cases do not shatter, but bounce off one another and scatter. Protons are made up of quarks... The big hope is the discovery of the Odderon in the LHC regio odderon are so weak that a compelling experimental evidence for the non-vanishing odderon contribution has not been found yet. On the other hand, existence of the odderon exchange is guaranteed within perturbative QCD. In the lowest non-trivial order, the QCD odderon is made of three gluons with the symmetric color structure. The two data sets disagree at the 3.4σ level and thus provEnter the email address you signed up with and we'll eIt's an odderon, a particle that's e Through painstaking work, scientists have found evidence of a quasiparticle that was first imagined as a hypothesis almost 50 years ago: the odderon.. The odderon is a combination of subatomic particles rather than a new fundamental particle – but it does act like the latter in some respects, and the way it fits into the fundamental building blocks of matter makes the discovery a huge moment ...Odderon is a fundamental concept of physics, says Basarab Nicolescu, Honorary Member of the Romanian Academy, the physicist who invented and named the Odderon. ParaCrawl Corpus. In collaboration with Evgenij Martynov, we now design a model based on two concepts: Odderon and Froissaron. Perturbative Odderon in the Dipole Model. Yuri Kov Odderon exchange dominates except at very small transverse momentum, and we find a cross section of about 20 nb at a centre-of-mass energy of 20 GeV. This result is compared with what is currently ...26 Dec 2022 ... ... odderon mechanism originally suggested by Kovchegov and Sievert [Phys ... odderon contribution to the polarized cross section for inclusive ... Odderon discovered. 9 March 2021. Excavating odderons Part o[Enter the email address you signed up with and wPerturbative Odderon in the Dipole Model. Yuri Kovchegov The What is the Odderon? The Odderon consists of three gluons. Gluons “glue” the quarks together to “hadrons”, particles that are held together by the strong …