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Acknowledgement and future of the QCD conference by the chairman of QCD 23 QCD 23主席对QCD会议的致谢和未来展望
Nuclear and Particle Physics Proceedings Pub Date : 2024-04-01 DOI: 10.1016/j.nuclphysbps.2023.11.022
Stephan Narison
{"title":"Acknowledgement and future of the QCD conference by the chairman of QCD 23","authors":"Stephan Narison","doi":"10.1016/j.nuclphysbps.2023.11.022","DOIUrl":"10.1016/j.nuclphysbps.2023.11.022","url":null,"abstract":"","PeriodicalId":37968,"journal":{"name":"Nuclear and Particle Physics Proceedings","volume":"343 ","pages":"Page 141"},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139303081","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
Renormalon structure in Bjorken sum rule 比约肯总和规则中的正负电子结构
Nuclear and Particle Physics Proceedings Pub Date : 2024-04-01 DOI: 10.1016/j.nuclphysbps.2023.11.007
César Ayala , Camilo Castro-Arriaza , Gorazd Cvetič
{"title":"Renormalon structure in Bjorken sum rule","authors":"César Ayala ,&nbsp;Camilo Castro-Arriaza ,&nbsp;Gorazd Cvetič","doi":"10.1016/j.nuclphysbps.2023.11.007","DOIUrl":"10.1016/j.nuclphysbps.2023.11.007","url":null,"abstract":"<div><p>Leading-twist Bjorken polarised sum rule (BSR) <span><math><msubsup><mrow><mover><mrow><mi>Γ</mi></mrow><mo>‾</mo></mover></mrow><mrow><mn>1</mn></mrow><mrow><mi>p</mi><mo>−</mo><mi>n</mi></mrow></msubsup><mo>(</mo><msup><mrow><mi>Q</mi></mrow><mrow><mn>2</mn></mrow></msup><mo>)</mo></math></span> is evaluated using its known renormalon structure. In addition, we add OPE terms with the dimension <span><math><mi>D</mi><mo>=</mo><mn>2</mn><mo>,</mo><mn>4</mn></math></span>, and fit this to experimental data for inelastic BSR in specific intervals of momenta, <span><math><msup><mrow><mi>Q</mi></mrow><mrow><mn>2</mn></mrow></msup><mo>≥</mo><msubsup><mrow><mi>Q</mi></mrow><mrow><mi>min</mi></mrow><mrow><mn>2</mn></mrow></msubsup></math></span>, where <span><math><msubsup><mrow><mi>Q</mi></mrow><mrow><mi>min</mi></mrow><mrow><mn>2</mn></mrow></msubsup><mo>≈</mo><mo>(</mo><mn>1.7</mn><mo>±</mo><mn>0.3</mn><mo>)</mo><mspace></mspace><msup><mrow><mi>GeV</mi></mrow><mrow><mn>2</mn></mrow></msup></math></span>. Reasonable values of the pQCD coupling can be extracted only for specific choices of <span><math><msubsup><mrow><mi>Q</mi></mrow><mrow><mi>min</mi></mrow><mrow><mn>2</mn></mrow></msubsup></math></span>, but have in general, for other choices of <span><math><msubsup><mrow><mi>Q</mi></mrow><mrow><mi>min</mi></mrow><mrow><mn>2</mn></mrow></msubsup></math></span>, very large uncertainties and thus cannot be extracted in practice. On the other hand, if we fix the pQCD coupling to the known world average values, the <span><math><mi>D</mi><mo>=</mo><mn>2</mn></math></span> and <span><math><mi>D</mi><mo>=</mo><mn>4</mn></math></span> OPE terms can be determined within reasonable uncertainties dominated by the experimental uncertainties of the data.</p></div>","PeriodicalId":37968,"journal":{"name":"Nuclear and Particle Physics Proceedings","volume":"343 ","pages":"Pages 94-98"},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135564419","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
Committee Members and Local Oganization 委员会成员和地方组织
Nuclear and Particle Physics Proceedings Pub Date : 2024-04-01 DOI: 10.1016/S2405-6014(24)00015-4
{"title":"Committee Members and Local Oganization","authors":"","doi":"10.1016/S2405-6014(24)00015-4","DOIUrl":"https://doi.org/10.1016/S2405-6014(24)00015-4","url":null,"abstract":"","PeriodicalId":37968,"journal":{"name":"Nuclear and Particle Physics Proceedings","volume":"343 ","pages":"Page ii"},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140639268","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
A beyond-the-Standard-Model model without Higgs 没有希格斯的超越标准模型
Nuclear and Particle Physics Proceedings Pub Date : 2024-04-01 DOI: 10.1016/j.nuclphysbps.2023.09.013
G.C. Rossi
{"title":"A beyond-the-Standard-Model model without Higgs","authors":"G.C. Rossi","doi":"10.1016/j.nuclphysbps.2023.09.013","DOIUrl":"10.1016/j.nuclphysbps.2023.09.013","url":null,"abstract":"<div><p>In this talk we describe the construction of a putative beyond-the-Standard-Model model where, as a viable alternative to the Higgs scenario, elementary particle masses emerge in a non-perturbative way as a consequence of a sort of “interference” between residual UV chiral breaking effects left behind in the Nambu–Goldstone phase of the theory at a critical value of the Yukawa coupling where chiral symmetry is recovered, and IR features triggered by the phenomenon of spontaneous breaking of (the recovered) chiral symmetry which standardly takes place in a strongly interacting theory. Elementary particle masses are all proportional to the RGI scale of the theory. Thus to get the top quark and the electro-weak boson masses at the desired value one must have <span><math><msub><mrow><mi>Λ</mi></mrow><mrow><mi>R</mi><mi>G</mi><mi>I</mi></mrow></msub><mo>≫</mo><msub><mrow><mi>Λ</mi></mrow><mrow><mi>Q</mi><mi>C</mi><mi>D</mi></mrow></msub></math></span>. This in turn implies that there must exist a new superstrongly interacting sector of fermions (we call them Tera-fermions) gauge invariantly coupled to Standard Model matter with <span><math><msub><mrow><mi>Λ</mi></mrow><mrow><mi>R</mi><mi>G</mi><mi>I</mi></mrow></msub><mo>≡</mo><msub><mrow><mi>Λ</mi></mrow><mrow><mi>T</mi></mrow></msub></math></span> of the order of a few TeVs. We give the expression of the full Lagrangian of a model encompassing quarks, Tera-quarks and <em>W</em>, as well as leptons, Tera-leptons and <em>B</em> gauge bosons when besides strong, Tera-strong and weak interactions, also hypercharge is included. The interest of considering elementary particle physics models with this kind of non-perturbative mass generation mechanism is twofold. First of all, unlike the Standard Model in this scenario elementary particle masses are not free parameters but are determined by the dynamics of the theory. Secondly, some of the conceptual problems of today's formulation of the Standard Model, namely origin of the electroweak scale and naturalness, find a possible solution.</p></div>","PeriodicalId":37968,"journal":{"name":"Nuclear and Particle Physics Proceedings","volume":"343 ","pages":"Pages 135-140"},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2405601423002134/pdfft?md5=c4963f1d5f2204ea300e7950dc34b7a7&pid=1-s2.0-S2405601423002134-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135606534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Phi meson in nuclear medium 核介质中的皮介子
Nuclear and Particle Physics Proceedings Pub Date : 2024-04-01 DOI: 10.1016/j.nuclphysbps.2023.11.009
Su Houng Lee
{"title":"Phi meson in nuclear medium","authors":"Su Houng Lee","doi":"10.1016/j.nuclphysbps.2023.11.009","DOIUrl":"10.1016/j.nuclphysbps.2023.11.009","url":null,"abstract":"<div><p>I will report on the progress in theoretical studies of the <em>ϕ</em> meson mass shift in a nuclear medium and provide an overview of the current experimental status for observing such an effect. Additionally, I will discuss how the distinct momentum dependencies of the transverse and longitudinal modes can be experimentally distinguished, particularly through the <span><math><msup><mrow><mi>e</mi></mrow><mrow><mo>+</mo></mrow></msup><msup><mrow><mi>e</mi></mrow><mrow><mo>−</mo></mrow></msup></math></span> and <span><math><msup><mrow><mi>K</mi></mrow><mrow><mo>+</mo></mrow></msup><msup><mrow><mi>K</mi></mrow><mrow><mo>−</mo></mrow></msup></math></span> decay modes of the <em>ϕ</em> meson as it decays within the medium.</p></div>","PeriodicalId":37968,"journal":{"name":"Nuclear and Particle Physics Proceedings","volume":"343 ","pages":"Pages 37-42"},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135516005","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
Sphaleron rate from lattice QCD 来自格子QCD的Sphaleron速率
Nuclear and Particle Physics Proceedings Pub Date : 2024-04-01 DOI: 10.1016/j.nuclphysbps.2023.09.019
Claudio Bonanno , Francesco D'Angelo , Massimo D'Elia , Lorenzo Maio , Manuel Naviglio
{"title":"Sphaleron rate from lattice QCD","authors":"Claudio Bonanno ,&nbsp;Francesco D'Angelo ,&nbsp;Massimo D'Elia ,&nbsp;Lorenzo Maio ,&nbsp;Manuel Naviglio","doi":"10.1016/j.nuclphysbps.2023.09.019","DOIUrl":"10.1016/j.nuclphysbps.2023.09.019","url":null,"abstract":"<div><p>We compute the sphaleron rate on the lattice from the inversion of the Euclidean time correlators of the topological charge density, performing also controlled continuum and zero-smoothing extrapolations. The correlator inversion is performed by means of a recently-proposed modification of the Backus-Gilbert method.</p></div>","PeriodicalId":37968,"journal":{"name":"Nuclear and Particle Physics Proceedings","volume":"343 ","pages":"Pages 113-119"},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135607193","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
(Q¯q¯Qq) from QCD Laplace sum rule (Q¯q</mml:
Nuclear and Particle Physics Proceedings Pub Date : 2024-04-01 DOI: 10.1016/j.nuclphysbps.2023.11.008
R.M. Albuquerque , S. Narison , A. Rabemananjara , D. Rabetiarivony
{"title":"(Q¯q¯Qq) from QCD Laplace sum rule","authors":"R.M. Albuquerque ,&nbsp;S. Narison ,&nbsp;A. Rabemananjara ,&nbsp;D. Rabetiarivony","doi":"10.1016/j.nuclphysbps.2023.11.008","DOIUrl":"10.1016/j.nuclphysbps.2023.11.008","url":null,"abstract":"<div><p><span>We present a review of our recent works on heavy-light exotic states, with new compact integrated expressions of the spectral functions at lowest order (LO) of perturbative (PT) QCD and up to </span><span><math><mi>d</mi><mo>=</mo><mn>6</mn></math></span> condensates of the Operator Product Expansion (OPE). Including higher order (HO) PT corrections, which we have estimated by assuming the factorization of the molecule/four-quark spectral functions, we evaluate masses and couplings with the Laplace sum rules (LSR) and finite energy (FESR) QCD spectral sum rules (QSSR) approaches. Our optimal results based on stability criteria are summarized and compared with experimental candidates and some LO QSSR results. We conclude that, our predicted spectra, do not confirm that the <span><math><mi>X</mi><mo>(</mo><mn>5568</mn><mo>)</mo></math></span> is a pure molecule or a four-quark state. The masses of the <em>XZ</em> observed states are compatible with (almost) pure <span><math><msup><mrow><mi>J</mi></mrow><mrow><mi>P</mi><mi>C</mi></mrow></msup><mo>=</mo><msup><mrow><mn>1</mn></mrow><mrow><mo>+</mo><mo>±</mo></mrow></msup><mo>,</mo><msup><mrow><mn>0</mn></mrow><mrow><mo>+</mo><mo>+</mo></mrow></msup></math></span> molecule or/and four-quark states. The SU3 corrections on the meson masses are tiny: <span><math><mo>≤</mo><mn>10</mn><mtext>%</mtext></math></span> (respectively <span><math><mo>≤</mo><mn>3</mn><mtext>%</mtext></math></span>) for the <em>c</em> (respectively <em>b</em>)-quark channel but can be large for the couplings (<span><math><mo>≤</mo><mn>20</mn><mtext>%</mtext></math></span>). We expect that the resonance near the <span><math><msup><mrow><mi>D</mi></mrow><mrow><mo>−</mo></mrow></msup><msup><mrow><mi>K</mi></mrow><mrow><mo>+</mo></mrow></msup></math></span> threshold can be originated from the <span><math><msup><mrow><mn>0</mn></mrow><mrow><mo>+</mo></mrow></msup><mo>(</mo><msup><mrow><mi>D</mi></mrow><mrow><mo>−</mo></mrow></msup><msup><mrow><mi>K</mi></mrow><mrow><mo>+</mo></mrow></msup><mo>)</mo></math></span> molecule and/or <span><math><msup><mrow><mi>D</mi></mrow><mrow><mo>−</mo></mrow></msup><msup><mrow><mi>K</mi></mrow><mrow><mo>+</mo></mrow></msup></math></span> scattering. The <span><math><msub><mrow><mi>X</mi></mrow><mrow><mn>0</mn></mrow></msub><mo>(</mo><mn>2900</mn><mo>)</mo></math></span>, <span><math><msub><mrow><mi>X</mi></mrow><mrow><mi>J</mi></mrow></msub><mo>(</mo><mn>3150</mn><mo>)</mo></math></span> (if <em>J</em> = 0), <span><math><msub><mrow><mi>X</mi></mrow><mrow><mn>1</mn></mrow></msub><mo>(</mo><mn>2900</mn><mo>)</mo></math></span> and the <span><math><msub><mrow><mi>X</mi></mrow><mrow><mi>J</mi></mrow></msub><mo>(</mo><mn>3350</mn><mo>)</mo></math></span> (if <em>J</em> = 1) can emerge from a minimal mixing model between tetramoles and first radial excitation. The <span><math><msub><mrow><mi>Z</mi></mrow><mrow><mi>c</mi></mrow></msub><mo>(</mo><mn>3900</mn><mo>,</mo><mn>4025</mn><mo>,</mo><mn>","PeriodicalId":37968,"journal":{"name":"Nuclear and Particle Physics Proceedings","volume":"343 ","pages":"Pages 61-67"},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139294257","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
Welcome and acknowledgement by the chairman of QCD 23 QCD 23 主席致欢迎辞和感谢辞
Nuclear and Particle Physics Proceedings Pub Date : 2024-04-01 DOI: 10.1016/j.nuclphysbps.2023.11.021
Stephan Narison
{"title":"Welcome and acknowledgement by the chairman of QCD 23","authors":"Stephan Narison","doi":"10.1016/j.nuclphysbps.2023.11.021","DOIUrl":"10.1016/j.nuclphysbps.2023.11.021","url":null,"abstract":"","PeriodicalId":37968,"journal":{"name":"Nuclear and Particle Physics Proceedings","volume":"343 ","pages":"Pages 1-2"},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139300191","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
The inclusion of theory errors in PDF fits 在 PDF 拟合中加入理论误差
Nuclear and Particle Physics Proceedings Pub Date : 2024-04-01 DOI: 10.1016/j.nuclphysbps.2023.11.002
Andrea Barontini , NNPDF collaboration
{"title":"The inclusion of theory errors in PDF fits","authors":"Andrea Barontini ,&nbsp;NNPDF collaboration","doi":"10.1016/j.nuclphysbps.2023.11.002","DOIUrl":"10.1016/j.nuclphysbps.2023.11.002","url":null,"abstract":"<div><p>We present ongoing work towards incorporating the missing higher-order uncertainty (MHOU) determined through scale variations in the assessment of parton distribution functions (PDFs). Our PDFs fitting employs the NNPDF4.0 methodology and our theory covariance matrix framework to account for theory errors. This approach relies on the integration of MHOUs and their correlations via a theory covariance matrix. We validate our estimation and assess the impact of theory errors on the PDFs and on LHC phenomenology.</p></div>","PeriodicalId":37968,"journal":{"name":"Nuclear and Particle Physics Proceedings","volume":"343 ","pages":"Pages 17-22"},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2405601423002468/pdfft?md5=7dfecb3805c7da8a6825dd81ccfea909&pid=1-s2.0-S2405601423002468-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135515177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Jet substructure in heavy-ion collisions with energy correlators 重离子碰撞中的射流子结构与能量相关器
Nuclear and Particle Physics Proceedings Pub Date : 2024-04-01 DOI: 10.1016/j.nuclphysbps.2023.11.003
C. Andres , F. Dominguez , J. Holguin , C. Marquet , I. Moult
{"title":"Jet substructure in heavy-ion collisions with energy correlators","authors":"C. Andres ,&nbsp;F. Dominguez ,&nbsp;J. Holguin ,&nbsp;C. Marquet ,&nbsp;I. Moult","doi":"10.1016/j.nuclphysbps.2023.11.003","DOIUrl":"10.1016/j.nuclphysbps.2023.11.003","url":null,"abstract":"<div><p>Recent developments in conformal field theories have motivated a reformulation of collider jet substructure as the study of correlation functions of a specific class of light-ray operators and their associated operator product expansion (OPE). Multi-point correlation functions of these operators have recently been measured in proton-proton collisions at RHIC and the LHC, allowing us to experimentally verify properties of the light-ray OPE. In this talk, we apply this approach to jet substructure in heavy-ion collisions. Specifically, we compute the two-point energy-energy correlator of an in-medium massive quark jet, and reveal its remarkable potential to disentangle the different scales of the problem, as they are imprinted into the angular scales of the correlator spectra. In particular, our analysis represents the first example where energy correlators simultaneously resolve both an intrinsic scale, associated with the heavy quark, and an emergent scale, originating from the interactions with the medium.</p></div>","PeriodicalId":37968,"journal":{"name":"Nuclear and Particle Physics Proceedings","volume":"343 ","pages":"Pages 7-10"},"PeriodicalIF":0.0,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135565825","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
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