Re: BRAHMS/QM Abstract/EM dissociation

From: Jens Jorgen Gaardhoje (gardhoje@nbi.dk)
Date: Mon Oct 23 2000 - 05:29:49 EDT

  • Next message: Jens Jorgen Gaardhoje: "abstracts"

    Micheal Murray wrote:
    > 
    >                 I'm sorry that this QM abstract is so late. I just got
    > back from wettist Wales.
    >                                           Michael
    > 
    
    Hi Michael 
    I think the abstract looks interesting. So you should definetely send it
    in.
    A few comments below.
    Cheers JJ
    
    
                        Photon Induced Nuclear Disociation at sqrt(s)=130GeV
    >                    =====================================================
    > 
    > Peripheral AuAu collisions at sqrt(s)=130GeV generate intense
    > electromagnetic fields which
    > may break up the colliding nuclei. The study of such events may tell us
    > about the photon flux
    > generated by such collisions and the strength of the nuclear force. The
    > rate of such collisions is
    > determined by the total electromagnetic cross section.
    > Using the BRAHMS multiplicity detectors to eliminate nulcear (NUCLEAR)
    > interactions we have studied
    > multual electromagnetic disociation of neutrons.
     (THIS SOUNDS AS IF THE NEUTRONS ARE DISSOCIATED> WHAT YOU WANT TO SAY I
    GUESS< IS THAT THE NUCLEI ARE DISSOCIATED AND THAT WE MEASURE THE TOTAL
    CROSS SECTION (OR AT LEAST A NUMBER PROP> TO THIS) FOR NEUTRONS that
    follow from the nuclear breakup. 
    
    > We have been able to isolate single, double and
    > triple neutron peaks and have compared their relative weights to
    > predictions from the RELDIS model
    > of electromagnetic disssociation [1]. Fig 1 shows a preliminary
    > comparison of the model predictions and data,
    > the aggreement is fairly good. A comparison to lower energy data will
    > also be made and physics implications
    > will be discussed.
    > 
    > [1] I. Peshanov et al, nucl-th/0007017,9912008, K, Chitkin et al,
    > nucl-th/0002028
    > 
    >   ------------------------------------------------------------------------
    >                 Name: Reldis.ps
    >    Reldis.ps    Type: application/postscript
    >             Encoding: 8bit
    
    -- 
    ____________________________________________________
    JENS JORGEN GAARDHOJE
    Assoc. Prof. of Physics, Dr. Scient.
    
    Niels Bohr Institute, 
    University of Copenhagen
    Blegdamsvej 17, 2100 Copenhagen
    Denmark.
    
    Tlf: (+45) 35 32 53 09 (dir) 
         (+45) 35 32 52 09 (secr)
    Fax: (+45) 35 32 50 16
    Email: gardhoje @ nbi.dk
    Home page: http://alf.nbi.dk/~gardhoje
    
    -Chair Ph. D. School of Physics at NBI.F.AFG.
     (secr. Frank Kristensen 35 32 04 41, Ørsted Lab.)
    -Member Danish National Commission for UNESCO 
     (secr. Ulla Holm 35 32 52 72, NBI)
    ___________________________________________________
    



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