Potential for tensor polarized deuterons in Hall D at Jefferson lab

IF 2.8 3区 物理与天体物理 Q2 PHYSICS, NUCLEAR
Mark M. Dalton, Alexandre Deur, Christopher D. Keith
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引用次数: 0

Abstract

Hall D at Jefferson lab is an ideal place to install a polarized deuteron target which can be “tensor polarized”, allowing the separation of the spin states \(m=0,\pm 1\) or the measurement of tensor asymmetries. The bremsstrahlung photon beam with 12 GeV endpoint provides very little heating or radiation damage compared to an electron beam, allowing the target to be run in frozen spin mode. Adiabatic fast passage spin manipulations can then be used to greatly enhance the population of the \(m=0\) spin state of the deuteron. Coherent photoproduction of \(\rho \) mesons from deuterium is sensitive to double-scattering at high momentum transfer and in the \(m=0\) spin state an additional sensitivity at intermediate momentum transfer opens up. We propose a frozen spin target for Hall D and the measurement of \(\rho \) photoproduced coherently from the deuteron as a flagship measurement.

Abstract Image

杰弗逊实验室D厅中张量极化氘核的势
杰弗逊实验室的D厅是安装偏振氘核靶的理想场所,它可以被“张量极化”,允许自旋态的分离\(m=0,\pm 1\)或张量不对称的测量。与电子束相比,端点为12 GeV的轫致辐射光子束提供了很少的加热或辐射损伤,允许目标在冷冻自旋模式下运行。绝热快速通道自旋操纵可以用来大大提高氘核\(m=0\)自旋态的占比。氘的相干光产生\(\rho \)介子在高动量转移状态下对双散射敏感,在\(m=0\)自旋状态下,在中等动量转移状态下开启了额外的灵敏度。我们提出了一个用于D厅的冷冻自旋靶和对氘核相干光产生的\(\rho \)的测量作为旗舰测量。
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来源期刊
The European Physical Journal A
The European Physical Journal A 物理-物理:核物理
CiteScore
5.00
自引率
18.50%
发文量
216
审稿时长
3-8 weeks
期刊介绍: Hadron Physics Hadron Structure Hadron Spectroscopy Hadronic and Electroweak Interactions of Hadrons Nonperturbative Approaches to QCD Phenomenological Approaches to Hadron Physics Nuclear and Quark Matter Heavy-Ion Collisions Phase Diagram of the Strong Interaction Hard Probes Quark-Gluon Plasma and Hadronic Matter Relativistic Transport and Hydrodynamics Compact Stars Nuclear Physics Nuclear Structure and Reactions Few-Body Systems Radioactive Beams Electroweak Interactions Nuclear Astrophysics Article Categories Letters (Open Access) Regular Articles New Tools and Techniques Reviews.
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