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Title: Hanbury–Brown–Twiss measurements at large rapidity separations, or can we measure the proton radius in p-A collisions?

We point out that current calculations of inclusive two-particle correlations in p-A collisions based on the Color Glass Condensate approach exhibit a contribution from Hanbury–Brown–Twiss correlations. These HBT correlations are quite distinct from the standard ones, in that they are apparent for particles widely separated in rapidity. The transverse size of the emitter which is reflected in these correlations is the gluonic size of the proton. Furthermore, this raises an interesting possibility of measuring the proton size directly by the HBT effect of particle pairs produced in p-A collisions.
Authors:
 [1] ;  [1] ;  [2] ;  [3] ;  [2]
  1. Univ. de Santiago de Compostela, Santiago de Compostela (Galicia-Spain)
  2. Ben-Gurion Univ. of the Negev, Beer Sheva (Israel)
  3. Univ. of Connecticut, Storrs, CT (United States)
Publication Date:
Grant/Contract Number:
FG02-13ER41989; SC0010339
Type:
Published Article
Journal Name:
Physics Letters. Section B
Additional Journal Information:
Journal Volume: 752; Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Research Org:
Univ. of Connecticut, Storrs, CT (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
OSTI Identifier:
1226377
Alternate Identifier(s):
OSTI ID: 1395549