Implications of the ρ(s) measurements by TOTEM at the LHC

Troshin, S.; Tyurin, N.E.

doi:10.1142/s0217732318502061

Cited by 20 publications

(18 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The recent TOTEM results [4,5] generated a burst of high level and intense theoretical debate about the correct interpretation of these data, see Refs. [15][16][17][18][19][20][21][22][23][24][25][26][27]. All possible extreme views were present among these first interpretative papers, including claims for a maximal Odderon effect [23] and claims of lack of any significant Odderon effects, Refs.…”

Section: Odderonmentioning

confidence: 99%

Convergence properties of Lévy expansions: implications for Odderon and proton structure

2019

View full text Add to dashboard Cite

We detail here the convergence properties of a new modelindependent imaging method, the Lévy expansion, that seems to play an important role in the analysis of the differential cross section of elastic hadronhadron scattering. We demonstrate, how our earlier results concerning the Odderon effects in the differential cross-section of elastic proton-proton and protonantiproton scattering as well as those related to apparent sub-structures inside the protons were obtained in a convergent and stable manner. *

show abstract

Section: Odderonmentioning

confidence: 99%

Convergence properties of Lévy expansions: implications for Odderon and proton structure

2019

View full text Add to dashboard Cite

show abstract

“…The main motivation for this is our need to describe the energy behaviour of the ratio ρ = Re/Im of the scattering amplitude, to which the secondary reggeons make a significant contribution. The new TOTEM data [12] shows that the value of ρ = 0.1 ± 0.01(0.09 ± 0.01) is lower than expected, and this ignited the hot discussion about the possible contribution of the odderon [13][14][15][16][17][18][19][20]. The odderon contribution to the negative signature appears naturally in perturbative QCD, with an intercept which is equal to zero [21,22].…”

mentioning

confidence: 99%

CGC/saturation approach: Secondary Reggeons andρ=Re/Imdependence on energy

2018

View full text Add to dashboard Cite

In this letter we demonstrate that a model based on the CGC/saturation approach, successfully describes soft interaction collisions for the wide range of W = √ s = 30 GeV ÷ 13 T eV including the new TOTEM data at 13 TeV. We have now incorporated the secondary Reggeons in our approach this enables us to describe the complete set of the soft data, including the energy behaviour of ρ the ratio of the real to imaginary parts of the elastic scattering amplitude. We argue that it is premature to claim that an odderon contribution is necessary, but estimate its possible strength as 1mb to the real part of the amplitude at W = 13 TeV. We show that the odderon contribution depends on the value of energy leading to ReA (s, t = 0)= 8 mb at W=21.2 GeV. Bearing this in mind we do not believe that ρ at high energies is the appropriate observable for detecting the odderon contribution. The successful description of the soft data in the wide range of energy strengthens our claim that the CGC/saturation approach is the only viable candidate for an effective theory for high energy QCD.

show abstract

“…The new data of TOTEM collaboration [1][2][3][4] drew attention to the state with negative signature and with an intercept which is close to unity (see Refs. [5][6][7][8][9][10][11][12][13][14]). This state is known as the Odderon, and it appears naturally in perturbative QCD (see Ref.…”

Section: Introductionmentioning

confidence: 99%

“…[15] for the review) with the intercept α Odd (t = 0) = 1 [16,17]. In a number of papers it was shown that such a state could be helpful for describing the experimental data [5][6][7][8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

A new parton model for the soft interactions at high energies

2019

View full text Add to dashboard Cite

In this paper we discuss the Odderon contribution in our model [19] that gives a fairly good description of σtot,σ el and B el for proton-proton scattering. We show that the shadowing corrections are large, and induce considerable dependence on energy for the Odderon contribution, which in perturbative QCD does not depend on energy. This energy dependence is in agreement with the experimental data for ρ = Re/Im, assuming that the Odderon gives a contribution of about 1 mb at W = 7 TeV. This differs greatly with our estimates for a CGC based model.We reproduce the main features of the t -dependence that are measured experimentally: the slope of the elastic cross section at small t, the existence of the minima in t-dependence which is located at |t|min = 0.52 GeV 2 at W= 7 TeV; and the behaviour of the elastic cross section at |t| > |t|min. The real part of the elastic amplitude turns out to be much smaller than the experimental one. Consequently, to achieve a description of the data, it is necessary to add an odderon contribution.

show abstract

Implications of the ρ(s) measurements by TOTEM at the LHC

Cited by 20 publications

References 12 publications

Convergence properties of Lévy expansions: implications for Odderon and proton structure

Convergence properties of Lévy expansions: implications for Odderon and proton structure

CGC/saturation approach: Secondary Reggeons andρ=Re/Imdependence on energy

A new parton model for the soft interactions at high energies

Contact Info

Product

Resources

About