DIFFRACTION at the LHC Lszl Jenkovszky, Kiev, jenk@bitp.kiev.ua - PowerPoint PPT Presentation

LISHEP, March 2013, Rio de Janeiro DIFFRACTION at the LHC László Jenkovszky, Kiev, jenk@bitp.kiev.ua

Some open questions: 0) Definition of diffraction: rapidity gap vs. P exchange; 1) The ratio between SD, DD and CD? 2) Integrated cross section require the knowledge of the M- dependence for all M! Low- and high M: 3) Duality in M (FMSR); 4) Structures in t: a dip in t~1 GeV^2,… 5) The background (in s and in M); 6) Exclusive-inclusive relation; 7) From elastic to inelastic diffraction (dis)continuity.

Simple (but approximate) factorization relations

(and ratios: σ/B,……. ). α (0)\C + - 1 P O ω 1/2 f

Low-mass diffraction dissociation at the LHC L. Jenkovszky, O. Kuprash, J. Lamsa, V. Magas, and R,. Orava: Dual-Regge approach to high-energy, low-mass DD at the LHC, Phys. Rev. D83(2011)0566014; hep-ph/1-11.0664. L. Jenkovszky, O. Kuprash, J. Lamsa and R. Orava: hep-ph/11063299, Mod. Phys. Letters A. 26 (2011) 1-9, August 2011.

TriTriple Regge (Pomeron) limit ::

Alternative (to the triple Regge) approach: Diffraction dissociation and DIS : G.A. Jaroszkiewicz and P.V. Landshoff, Phys. Rev. 10 (1974) 170; A. Donnachie, P.V. Landshoff, Nucl. Phys. B 244 (1984) 322.

JLA JLAB  LHC; γ  P; q^2  t R. Fiore {\it et al.} EPJ A 15 (2002) 505,hep-ph/0206027;. R. Fiore {\it et al.} Phys. Rev. D 68 (2004) 014004, hep-ph/0308178.

Low-mass diffraction dissociation at the LHC L. Jenkovszky, O. Kuprash, J. Lamsa, V. Magas, and R,. Orava: Dual-Regge approach to high-energy, low-mass DD at the LHC, Phys. Rev. D83(2011)0566014; hep-ph/1-11.0664. L. Jenkovszky, O. Kuprash, J. Lamsa and R. Orava: hep-ph/11063299, Mod. Phys. Letters A. 26 (2011) 1-9, August 2011.

At At the LHC, in the nearly forward direction, Pomeron exchange dominates; the rest, e.g. f-exchange, being negligible

SD and DD cross sections

“Reggeized (dual) Breit - Wigner” formula:

SDD cross sections vs. energy. *Normalization to ~ 14 mb at 7 TeV.

Approximation of background to reference points (t=-0.05)

Approximation of background to reference points (t=-0.5)

B-slopes for SD B-slope for SD cross section vs. t for different M2 values

Double differential SD cross sections (left) Double differential SD cross sections as a functions of M2 for different t values, (right) Double differential SD cross sections as a function of t for different M2 values.

Single differential integrated SD cross sections

DDD cross sections vs. energy.

Integrated DD cross sections (left) Single differential SD cross sections as a functions of t integrated in different M1:M2 regions. (right) Double differential SD cross sections as a function M2 integrated in region [0.0: 1.0] of t. value.

Triple differential DD cross sections t = - 0.2 t = - 0.1 t = - 0.3

The parameters and results

Open problems: 1. Interpolation in energy: from the Fermilab and ISR to the LHC; (Inclusion of non-leading contributions); 3. Deviation from a simple Pomeron pole model and breakdown of Regge-factorization; 4. Experimental studies of the exclusive channels (p+ π,…) produced from the decay of resonances (N*, Roper?,,,) in the nearly forward direction. 5. Turn down of the cross section towards t=o?!

Prospects (future plans): central diffractive meson production (double Pomeron exchange)

Thanks for your attention! Recent: L. Jenkovszky, R. Orava, A. Salii^ Low-mass single- and double diffraction dissociation at the LHC, hep-ph, arXiv:1211.5841, Nov. 2012.

Natal, March 22, 2013, DIFFRACTION at the LHC László Jenkovszky, Kiev, jenk@bitp.kiev.ua

DIFFRACTION at the LHC Lszl Jenkovszky, Kiev, jenk@bitp.kiev.ua - PowerPoint PPT Presentation

LISHEP, March 2013, Rio de Janeiro DIFFRACTION at the LHC Lszl Jenkovszky, Kiev, jenk@bitp.kiev.ua Some open questions: 0) Definition of diffraction: rapidity gap vs. P exchange; 1) The ratio between SD, DD and CD? 2) Integrated cross

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DIFFRACTION at the LHC Lszl Jenkovszky, Kiev, jenk@bitp.kiev.ua - PowerPoint PPT Presentation

LISHEP, March 2013, Rio de Janeiro DIFFRACTION at the LHC Lszl Jenkovszky, Kiev, jenk@bitp.kiev.ua Some open questions: 0) Definition of diffraction: rapidity gap vs. P exchange; 1) The ratio between SD, DD and CD? 2) Integrated cross

Diffraction Light bends! Diffraction assumptions Solution to Maxwell's Equations The far-field

2. Diffraction at periodic structures 2. Diffraction Patterson function 2. Diffraction 58 60

Trial of eV Neutron Diffraction KEK M.Arai &amp; T.Yokoo 1) Diffraction on highly absorbing

Neutron Diffraction Juan Rodrguez-Carvajal Diffraction Group at the Institut Laue-Langevin 1

Diffraction and Resolution Fraunhofer Diffraction Pattern of a Single Slit Resolution of

The wave model of light explains diffraction and interference. 31 Diffraction and Interference

Hard diffraction/rapidity gap physics at the LHC (theory) LISHEP 2011, Rio de Janeiro, July 7,

Single-slit diffraction pattern Diffraction and two slits ... Many slits ... Diffraction gratings

Topic 2: Scalar Diffraction Aim: Covers Scalar Diffraction theory to derive Rayleigh-Sommerfled

T-Violation and Neutron Dynamical Diffraction Ben Heacock 1 Outline 1) Bragg Scattering 2)

Diffrac'on basics 1 Diffraction Diffraction refers to the phenomena exhibited by radiation when

S o f t P h e n o m e n o l o g y P. S k a n d s ( C E R N ) H a d r o n C o l l i d e r P h

X-ray Diffraction Data X-ray Diffraction Data &amp; Crystal Structure &amp; Crystal Structure E

Diffraction 101 Dick Furnstahl Department of Physics Ohio State University Last revised: August

Tony Hyun Kim 10/21/2008 1. Introduction Diffraction theory 1. Fraunhofer diffraction integral

Powder Neutron Diffraction - an introduction MENA3100 March 7 2018 Magnus H. Srby

Nanopowder crystallite sizes and shapes from diffraction experiments D. Chateigner, L. Lutterotti

Neutron Scattering and Diffraction Neutron Scattering and Diffraction Studies of Fluids and

X-Ray diffraction 1895 W.C. Rntgen discovers X-rays (Nobel Prize 1901) 1910 Max von Laue:

Physics 116 Session 27 Diffraction gratings Postulates of Relativity Nov 14, 2011 R. J. Wilkes

Solid State Physics 460 - Lecture 3 Diffraction and the Reciprocal Lattice (Kittel Ch. 2)

The case of layered materials (FAULTS). J. Rodrguez-Carvajal Diffraction Group Institut

modern crystalline materials by neutron diffraction method Ludmila malov &amp; Alexandru Cr

Practical investigation 2.2 Diffraction through a single slit 1. Investigative question What

Trial of eV Neutron Diffraction KEK M.Arai & T.Yokoo 1) Diffraction on highly absorbing

X-ray Diffraction Data X-ray Diffraction Data & Crystal Structure & Crystal Structure E

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