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QCD Evolution 2017, Jefferson Lab, Newport News, VA, May 22, 2017最新文献

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Studying the Structure of Composite States 复合态结构的研究
QCD Evolution 2017, Jefferson Lab, Newport News, VA, May 22, 2017 Pub Date : 2017-05-01 DOI: 10.2172/1985602
R. Briceño
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引用次数: 0
Jet Correlators and Transversity in Inclusive DIS 包容性DIS中的喷气相关因子和横向
QCD Evolution 2017, Jefferson Lab, Newport News, VA, May 22, 2017 Pub Date : 2017-05-01 DOI: 10.2172/1985670
A. Accardi
{"title":"Jet Correlators and Transversity in Inclusive DIS","authors":"A. Accardi","doi":"10.2172/1985670","DOIUrl":"https://doi.org/10.2172/1985670","url":null,"abstract":"","PeriodicalId":285486,"journal":{"name":"QCD Evolution 2017, Jefferson Lab, Newport News, VA, May 22, 2017","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116763512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
What do we know and don't know about parton distributions? 关于部分子分布我们知道什么不知道什么?
QCD Evolution 2017, Jefferson Lab, Newport News, VA, May 22, 2017 Pub Date : 2017-05-01 DOI: 10.2172/1985660
W. Melnitchouk
{"title":"What do we know and don't know about parton distributions?","authors":"W. Melnitchouk","doi":"10.2172/1985660","DOIUrl":"https://doi.org/10.2172/1985660","url":null,"abstract":"","PeriodicalId":285486,"journal":{"name":"QCD Evolution 2017, Jefferson Lab, Newport News, VA, May 22, 2017","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121693468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Quasi-PDFs and Pseudo-PDFs 准pdf和伪pdf
QCD Evolution 2017, Jefferson Lab, Newport News, VA, May 22, 2017 Pub Date : 2017-05-01 DOI: 10.22323/1.308.0021
A. Radyushkin
{"title":"Quasi-PDFs and Pseudo-PDFs","authors":"A. Radyushkin","doi":"10.22323/1.308.0021","DOIUrl":"https://doi.org/10.22323/1.308.0021","url":null,"abstract":"We discuss the physical nature of quasi-PDFs, especially the reasons for the strong nonperturbative evolution pattern which they reveal in actual lattice gauge calculations. We argue that quasi-PDFs may be treated as hybrids of PDFs and the rest-frame momentum distributions of partons. The latter is also responsible for the transverse momentum dependence of TMDs. The resulting convolution structure of quasi-PDFs necessitates using large probing momenta $p_3 gtrsim 3$ GeV to get reasonably close to the PDF limit. To deconvolute the rest-frame distribution effects, we propose to use a method based directly on the coordinate representation. We treat matrix elements $M(z_3,p_3)$ as distributions ${cal M} (nu, z_3^2)$ depending on the Ioffe-time $nu = p_3 z_3$ and the distance parameter $z_3^2$. The rest-frame spatial distribution is given by ${cal M} (0, z_3^2)$. Using the reduced Ioffe function ${mathfrak M} (nu, z_3^2) equiv {cal M} (nu, z_3^2)/ {cal M} (0, z_3^2)$ we divide out the rest frame effects,including the notorious link renormalization factors. The $nu$-dependence remains intact and determines the shape of PDFs in the small $z_3$ region. The residual $z_3^2$ dependence of the ${mathfrak M} (nu, z_3^2)$ is governed by perturbative evolution. The Fourier transform of ${cal M} (nu, z_3^2)$ produces pseudo-PDFs ${cal P}(x, z_3^2)$ that generalize the light-front PDFs onto spacelike intervals. On the basis of these findings we propose a new method for extraction of PDFs from lattice calculations.","PeriodicalId":285486,"journal":{"name":"QCD Evolution 2017, Jefferson Lab, Newport News, VA, May 22, 2017","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130489732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Nuclear PDFs at EIC: A Window on Nucleon Interactions in QCD EIC的核pdf: QCD中核子相互作用的窗口
QCD Evolution 2017, Jefferson Lab, Newport News, VA, May 22, 2017 Pub Date : 2017-05-01 DOI: 10.2172/1985607
C. Weiss
{"title":"Nuclear PDFs at EIC: A Window on Nucleon Interactions in QCD","authors":"C. Weiss","doi":"10.2172/1985607","DOIUrl":"https://doi.org/10.2172/1985607","url":null,"abstract":"","PeriodicalId":285486,"journal":{"name":"QCD Evolution 2017, Jefferson Lab, Newport News, VA, May 22, 2017","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114833454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
First Simultaneous Exraction of Spin PDFs and FFs from a Global QCD Analysis 首次从全局QCD分析中同时提取自旋pdf和FFs
QCD Evolution 2017, Jefferson Lab, Newport News, VA, May 22, 2017 Pub Date : 2017-05-01 DOI: 10.2172/1985600
J. Ethier
{"title":"First Simultaneous Exraction of Spin PDFs and FFs from a Global QCD Analysis","authors":"J. Ethier","doi":"10.2172/1985600","DOIUrl":"https://doi.org/10.2172/1985600","url":null,"abstract":"","PeriodicalId":285486,"journal":{"name":"QCD Evolution 2017, Jefferson Lab, Newport News, VA, May 22, 2017","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125037141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hadron Mass Effects on Kaon Multiplicities: HERMES vs. COMPASS 强子质量对介子多重度的影响:HERMES与COMPASS
QCD Evolution 2017, Jefferson Lab, Newport News, VA, May 22, 2017 Pub Date : 2017-05-01 DOI: 10.22323/1.308.0055
J. V. Guerrero, A. Accardi
{"title":"Hadron Mass Effects on Kaon Multiplicities: HERMES vs. COMPASS","authors":"J. V. Guerrero, A. Accardi","doi":"10.22323/1.308.0055","DOIUrl":"https://doi.org/10.22323/1.308.0055","url":null,"abstract":"Experimental data for integrated kaon multiplicities taken at HERMES and COMPASS measurements look incompatible with each other. In this talk, we investigate the effects of hadron masses calculated at leading-order and leading twist at the kinematics of these two experiments. We present evidence that Hadron Mass Corrections can fully reconcile the data for the $K^+/K^-$ multiplicity ratio, and can also sizeably reduce the apparent large discrepancy in the case of $K^+ + K^-$ data. Residual differences in the shape of the latter one remains to be understood.","PeriodicalId":285486,"journal":{"name":"QCD Evolution 2017, Jefferson Lab, Newport News, VA, May 22, 2017","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114894740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
NLO SIDIS at Large Transverse Momentum NLO SIDIS横向动量大
QCD Evolution 2017, Jefferson Lab, Newport News, VA, May 22, 2017 Pub Date : 2017-02-01 DOI: 10.2172/1985604
Bowen Wang
{"title":"NLO SIDIS at Large Transverse Momentum","authors":"Bowen Wang","doi":"10.2172/1985604","DOIUrl":"https://doi.org/10.2172/1985604","url":null,"abstract":"","PeriodicalId":285486,"journal":{"name":"QCD Evolution 2017, Jefferson Lab, Newport News, VA, May 22, 2017","volume":"206 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116191397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hadron Structure from Lattice QCD 晶格QCD的强子结构
QCD Evolution 2017, Jefferson Lab, Newport News, VA, May 22, 2017 Pub Date : 2005-07-30 DOI: 10.1142/S0217751X06031946
L. C. B. Bistrovic, R. Edwards, G. Fleming, P. Hagler, J. Negele, K. Orginos, A. Pochinsky, D. Renner, D. Richards, W. Schroers
{"title":"Hadron Structure from Lattice QCD","authors":"L. C. B. Bistrovic, R. Edwards, G. Fleming, P. Hagler, J. Negele, K. Orginos, A. Pochinsky, D. Renner, D. Richards, W. Schroers","doi":"10.1142/S0217751X06031946","DOIUrl":"https://doi.org/10.1142/S0217751X06031946","url":null,"abstract":"The last years have seen impressive progress in hadron structure calculations in dynamical lattice QCD. Form factors, moments of PDFs and GPDs, and many other important observables have been studied with increasing accuracy, giving access to fundamental physics questions, for example related to the distribution of charge and momentum in hadrons and the spin structure of the nucleon. We illustrate the recent achievements and remaining challenges by reviewing a small number of selected lattice results.","PeriodicalId":285486,"journal":{"name":"QCD Evolution 2017, Jefferson Lab, Newport News, VA, May 22, 2017","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134228130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 18
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