Energy dependence of nuclear transparency in C (p,2p) scattering.

نویسندگان

  • A Leksanov
  • J Alster
  • G Asryan
  • Y Averichev
  • D Barton
  • V Baturin
  • N Bukhtoyarova
  • A Carroll
  • S Heppelmann
  • T Kawabata
  • Y Makdisi
  • A Malki
  • E Minina
  • I Navon
  • H Nicholson
  • A Ogawa
  • Y Panebratsev
  • E Piasetzky
  • A Schetkovsky
  • S Shimanskiy
  • A Tang
  • J W Watson
  • H Yoshida
  • D Zhalov
چکیده

The transparency of carbon for (p,2p) quasielastic events was measured at beam momenta ranging from 5.9 to 14.5 GeV/c at 90 degrees c.m. The four-momentum transfer squared (Q2) ranged from 4.7 to 12.7 (GeV/c)(2). We present the observed beam momentum dependence of the ratio of the carbon to hydrogen cross sections. We also apply a model for the nuclear momentum distribution of carbon to obtain the nuclear transparency. We find a sharp rise in transparency as the beam momentum is increased to 9 GeV/c and a reduction to approximately the Glauber level at higher energies.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

A relativistic framework to determine the nuclear transparency from A(p, 2p) reactions

A relativistic framework for computing the nuclear transparency extracted from A(p, 2p) scattering processes is presented. The model accounts for the initialand final-state interactions (IFSI) within the relativistic multiple-scattering Glauber approximation (RMSGA). For the description of color transparency, two existing models are used. The nuclear filtering mechanism is implemented as a poss...

متن کامل

th / 9 60 80 09 v 1 7 A ug 1 99 6 Glauber theory of initial - and final - state interactions in ( p , 2 p ) scattering

We develop the Glauber theory description of initial-and final-state interactions (IFSI) in quasielastic A(p, 2p) scattering. We study the IFSI-distortion effects both for the inclusive and exclusive conditions. In inclusive reaction the important new effect is an interaction between the two sets of the trajectories which enter the calculation of IFSI-distorted one-body density matrix for inclu...

متن کامل

The Nuclear Transparency of Pion - photoproduction from 4 He at 12 GeV June 20 , 2007

We propose to perform a coincidence γn → πp differential cross section measurements at the quasi-free kinematics from deuterium and He in order to extract nuclear transparency over a momentum transferred square (|t|) range of 3.0 9.0 GeV. A rise in the nuclear transparency as a function of |t| is predicted to be a signature of the onset of Color Transparency. Recent experiments have reported hi...

متن کامل

Momentum transfer dependence of nuclear transparency from the quasielastic 12C(e,e'p) reaction.

The cross section for quasielastic 12C(e,e'p) scattering has been measured at momentum transfer Q2 = 1, 3, 5, and 6.8 {GeV /c) 2 • The results are consistent with scattering from a single nucleon as the dominant process. The nuclear transparency is obtained and compared with theoretical calculations that incorporate color transparency effects. No significant rise of the transparency with Q2 is ...

متن کامل

EFFECT OF NUCLEAR TRANSPARENCY FROM THE (p,2p) MEASUREMENTS ON

We studied the production of protons to the backward direction in (p, 2p) reactions on 6Li and 12C, accompanied by a proton emitted into the forward hemisphere. The momenta of the final two protons were measured in a wide range with the two-arm time-of-flight spectrometer. For each event we reconstructed the mass of the intermediate off-shell particles. We observed that the ∆(1232) is manifeste...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Physical review letters

دوره 87 21  شماره 

صفحات  -

تاریخ انتشار 2001