Measurement of the Generalized Forward Spin Polarizabilities of the Neutron

M Amarian,R Disalvo,E Burtin,S Frullani,M Rvachev,M Jones,E Chudakov,E Lakuriqi,S Strauch,A Deur,E Cisbani,H Voskanian,D Rowntree,V Gorbenko,G G Petratos,H Fonvieille,A Ketikyan,J Marroncle,J Berthot,M Kuss,T Averett,A Gasparian,R Holmes,L Todor,Y Roblin,P Djawotho,B Hersman,D Pripstein,S Teijiro,C Jutier,K Mccormick,R Michaels,C W De Jager,F Garibaldi,C Glashausser,S Malov,Z Papandreou,Z Chai,P Vernin,K Kramer,E W Hughes ,A Glamazdin,Krishna Kumar ,R D Ransome ,J M Finn,Tina Pavlin ,A Saha,F Sabatié ,J R Calarco ,G Kumbartzki,B Wojtsekhowski,M Liang,E J Brash ,Robert Van Der Meer ,D S Brown ,P A Souder ,Hiroaki Ueno ,G M Urciuoli ,W Xu,G D Cates ,N Liyanage,D L Prout ,R Gilman,Sonja Dieterich ,J Gómez ,X Jiang,K Slifer,B Zhang,C E Jones ,G Jones,J P Chen ,S Incerti,W Korsch,Eugene P Goldberg ,J.‐O Hansen ,W Bertozzi,S Gilad,Kevin Fissum ,Brian Humensky ,R D Mckeown ,J Mitchell,K Takahashi,R Suleiman,Jae Choon Yang ,J Lerose,I K Kominis ,M Iodice,T Black,P.y Bertin ,J Gao,L Auerbach,S Choi ,T Saito,G J Lolos ,H Gao,H Tsubota,G M Huber,Z E Meziani ,Svend J Knak Jensen ,Feng Xiong ,G Laveissière ,Piotr Zolnierczuk

doi:10.1103/physrevlett.93.152301

Measurement of the Generalized Forward Spin Polarizabilities of the Neutron

M Amarian, R Disalvo + Show 100 more

Open Access

https://doi.org/10.1103/physrevlett.93.152301

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Journal: Physical Review Letters	Publication Date: Oct 5, 2004
Citations: 32

Affiliation: Massachusetts Institute of Technology, William & Mary, Thomas Jefferson National Accelerator Facility, Temple University, Rutgers, The State University of New Jersey, Kharkiv Institute of Physics and Technology, Kent State University, Hampton University, Syracuse University, Old Dominion University, University of New Hampshire, California Institute of Technology, Tohoku University, University of Regina

#Relativistic Baryon Chiral Perturbation Theory #Chiral Perturbation Theory Calculation + Show 8 more

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Abstract

The generalized forward spin polarizabilities gamma(0) and delta(LT) of the neutron have been extracted for the first time in a Q2 range from 0.1 to 0.9 GeV2. Since gamma(0) is sensitive to nucleon resonances and delta(LT) is insensitive to the Delta resonance, it is expected that the pair of forward spin polarizabilities should provide benchmark tests of the current understanding of the chiral dynamics of QCD. The new results on delta(LT) show significant disagreement with chiral perturbation theory calculations, while the data for gamma(0) at low Q2 are in good agreement with a next-to-leading-order relativistic baryon chiral perturbation theory calculation. The data show good agreement with the phenomenological MAID model.

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