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Using the largest data set available, we determine the best values that the data at t=0 (total cross sections and real parts of the hadronic amplitudes) give for the intercepts and couplings of the soft pomeron and of the rho/omega and a/f…

高能物理 - 唯象学 · 物理学 2014-11-17 J. R. Cudell , V. Ezhela , K. Kang , S. Lugovsky , N. Tkachenko

An almost model-independent parametrization for the ratio of the total cross section to the elastic slope, as function of the center of mass energy, is introduced. The analytical result is based on the approximate relation of this quantity…

高能物理 - 唯象学 · 物理学 2012-02-02 D. A. Fagundes , M. J. Menon

Recent data from LHC13 by the TOTEM Collaboration on $\sigma_{tot}$ and $\rho$ have indicated disagreement with all the Pomeron model predictions by the COMPETE Collaboration (2002). On the other hand, as recently demonstrated by Martynov…

高能物理 - 唯象学 · 物理学 2018-05-23 M. Broilo , E. G. S. Luna , M. J. Menon

The predictions of a model which was tuned in 2013 to describe the elastic and diffractive $pp$- and/or $p\bar p$-data at collider energies up to 7 TeV are compared with the new 13 TeV TOTEM results. The possibility of an odd-signature…

高能物理 - 唯象学 · 物理学 2018-02-21 V. A. Khoze , A. D. Martin , M. G. Ryskin

Integral and derivative dispersion relations (IDR and DDR) are considered for the proton-proton and antiproton-proton forward scattering amplitudes. A scheme for calculation of the corrections to asymptotic form for the DDR is presented.…

高能物理 - 唯象学 · 物理学 2010-09-23 A. Alkin , E. Martynov

The TOTEM experiment has made a precise measurement of the elastic proton-proton differential cross-section at the centre-of-mass energy sqrt(s) = 8 TeV based on a high-statistics data sample obtained with the beta* = 90 optics. Both the…

We construct analytical forms in the impact parameter $b$-space for the real and imaginary amplitudes describing elastic pp and $\rm p \bar p $ scattering. The amplitudes converted analytically to the momentum transfer $t$-space have…

高能物理 - 唯象学 · 物理学 2013-05-16 Anderson Kendi Kohara , Erasmo Ferreira , Takeshi Kodama

The paper presents the phenomenological analysis of the energy dependence for the ratio of elastic to total cross section in proton-proton and antiproton-proton scattering. The analytic functions based on the study of low- and high-energy…

高能物理 - 唯象学 · 物理学 2019-04-11 V. A. Okorokov

Recent measurements of the differential cross sections in the forward region of pp elastic scattering at 7 and 8 TeV show precise form of the $t$ dependence. We propose a detailed analysis of these measurements including the structures of…

高能物理 - 唯象学 · 物理学 2018-01-17 A. K. Kohara , E. Ferreira , T. Kodama , M. Rangel

We present new accurate measurements of the differential cross section $\sigma(\theta)$ and the proton analyzing power $A_{y}$ for proton-$^{3}$He elastic scattering at various energies. A supersonic gas jet target has been employed to…

The differential cross section for proton-proton elastic scattering has been measured at a beam energy of 1.0 GeV and in 200 MeV steps from 1.6 to 2.8 GeV for centre-of-mass angles in the range from 12-16 degrees to 25-30 degrees, depending…

We describe the main features of recent LHC data on elastic pp scattering through a simple parametrization to the amplitude, inspired by a model proposed by Barger and Phillips in 1973, comprising of two exponentials with a relative phase.…

高能物理 - 唯象学 · 物理学 2013-12-04 Daniel A. Fagundes , Agnes Grau , Simone Pacetti , Giulia Pancheri , Yogendra N. Srivastava

We present the results of a novel model-independent fit to elastic proton-proton differential cross section data at $\sqrt s$ = 52.8 GeV. Taking into account the error propagation from the fit parameters, we determine the scattering…

高能物理 - 唯象学 · 物理学 2011-03-28 Geovanna L. P. Silva , Marcio J. Menon , Regina F. Avila

An excess of $\sim$10-20 GeV cosmic-ray antiprotons has been identified in the spectrum reported by the AMS-02 Collaboration. The systematic uncertainties associated with this signal, however, have made it difficult to interpret these…

高能天体物理现象 · 物理学 2019-08-20 Ilias Cholis , Tim Linden , Dan Hooper

We analyse the pp and p\=p elastic scattering amplitudes using the data of several CERN and FERMILAB experiments, revisiting ideas proposed by Andr\'e Martin based on analytic continuation and crossing symmetry. Introducing a new form for…

高能物理 - 唯象学 · 物理学 2019-10-25 Anderson Kendi Kohara

We show that the proton-proton elastic differential cross section data at dip position and beyond can be quite well described by a parametrization based on the Tsallis distribution, with only five free fit parameters. Extrapolation of the…

高能物理 - 唯象学 · 物理学 2015-06-04 D. A. Fagundes , M. J. Menon , P. V. R. G. Silva

Elastic scattering data gained for proton-proton collisions at high energies are being analyzed at the present practically only with the help of purely phenomenological mathematical models. And the question exists whether in the impact…

高能物理 - 唯象学 · 物理学 2009-09-18 Milos V. Lokajicek , V. Kundrat

The TOTEM experiment at the LHC has measured proton-proton elastic scattering in dedicated runs at $\sqrt{s}=7$ and 8 TeV centre-of-mass LHC energies. The proton-proton total cross-section $\sigma_{\rm tot}$ has been derived for both…

高能物理 - 实验 · 物理学 2016-02-22 Frigyes Nemes

Very precise data on elastic proton-proton scattering at $\sqrt{s}=7$, $8$ and $13$ TeV have been obtained by the TOTEM group at LHC in the near-forward region (momentum transfers down to $|t| = 6 \times 10^{-4}\ {\rm GeV}^2$ at…

高能物理 - 唯象学 · 物理学 2019-03-01 Giulia Pancheri , Simone Pacetti , Yogendra Srivastava

We point out to another indication of the black-disk limit exceeding in hadron interactions found in the recent impact parameter analysis performed by the TOTEM Collaboration at $\sqrt{s}$=8 TeV and emphasise that this observation might be…

高能物理 - 唯象学 · 物理学 2017-03-20 S. M. Troshin , N. E. Tyurin