Comparison of recoil polarization in the $^{12} C (\vec{e}, e^{'} \vec{p})$ process for protons extracted from $s$ and $p$ shell

T. Kolar,S. Paul，I. Yaron, for the A Collaboration

arXiv · （2020）

Cited 2|Views88

Abstract

We present first measurements of the double ratio of the polarization transfer components

(P_{x}^{'} / P_{z}^{'})_{p} / (P_{x}^{'} / P_{z}^{'})_{s}

for knock-out protons from

s

and

p

shells in

^{12} C

measured by the

^{12} C (\vec{e}, e^{'} \vec{p})

reaction in quasi-elastic kinematics. The data are compared to theoretical predictions in relativistic distorted-wave impulse approximation. Our results show that differences between

s

- and

p

-shell protons, observed when compared at the same initial momentum (missing momentum) largely disappear when the comparison is done at the same proton virtuality. We observe no density-dependent medium modifications for protons from

s

and

p

shells with the same virtuality in spite of the large differences in the respective nuclear densities.

Translated text

Bibtex

AI Read Science

AI Summary

AI Summary is the key point extracted automatically understanding the full text of the paper, including the background, methods, results, conclusions, icons and other key content, so that you can get the outline of the paper at a glance.

Example

Background

Key content

Introduction

Methods

Results

Related work

Fund

Key content

Pretraining has recently greatly promoted the development of natural language processing (NLP)
We show that M6 outperforms the baselines in multimodal downstream tasks, and the large M6 with 10 parameters can reach a better performance
We propose a method called M6 that is able to process information of multiple modalities and perform both single-modal and cross-modal understanding and generation
The model is scaled to large model with 10 billion parameters with sophisticated deployment, and the 10 -parameter M6-large is the largest pretrained model in Chinese
Experimental results show that our proposed M6 outperforms the baseline in a number of downstream tasks concerning both single modality and multiple modalities We will continue the pretraining of extremely large models by increasing data to explore the limit of its performance

Try using models to generate summary,it takes about 60s

Must-Reading Tree

Example

Generate MRT to find the research sequence of this paper

Comparison of recoil polarization in the 12C(e→,e′p→) process for protons extracted from s and p shell

Comparison of recoil polarization in the $^{12} C (\vec{e}, e^{'} \vec{p})$ process for protons extracted from $s$ and $p$ shell