发布求助
文献互助 智能选刊 最新文献

Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2018)最新文献

筛选
英文 中文
Fully Differential Higgs Pair Production in Association With a Vector Boson at NNLO in QCD QCD中与矢量玻色子相关的完全微分希格斯对的产生
Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2018) Pub Date : 2018-10-02 DOI: 10.22323/1.303.0021
Chong-Sheng Li, Hai Tao Li, Jian Wang
{"title":"Fully Differential Higgs Pair Production in Association With a Vector Boson at NNLO in QCD","authors":"Chong-Sheng Li, Hai Tao Li, Jian Wang","doi":"10.22323/1.303.0021","DOIUrl":"https://doi.org/10.22323/1.303.0021","url":null,"abstract":"The Higgs self-coupling is an important parameter in the standard model to clarify the electroweak symmetry breaking mechanism, \u0000which can be measured via Higgs boson pair productions at hadron colliders. \u0000We present a fully differential NNLO QCD calculation of the Higgs boson pair production in association \u0000with a massive gauge boson at hadron colliders. \u0000For $Whh$ production, the NNLO effects reduce the scale uncertainties significantly, and are sizeable in the large transverse momentum region. \u0000For $Zhh$ production, the NNLO effects enhance the NLO total cross sections by $20%- 50%$, and change the shape of NLO kinematic distributions. The impact on the extraction of the self-coupling from experiments is significant. \u0000These theoretical results can be utilised in future experimental analysis.","PeriodicalId":140132,"journal":{"name":"Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2018)","volume":"44 18","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114006751","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
Non-resonant and electroweak corrections to top pair production near threshold 在阈值附近对顶对产生的非谐振和电弱校正
Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2018) Pub Date : 2018-10-02 DOI: 10.22323/1.303.0004
A. Maier
{"title":"Non-resonant and electroweak corrections to top pair production near threshold","authors":"A. Maier","doi":"10.22323/1.303.0004","DOIUrl":"https://doi.org/10.22323/1.303.0004","url":null,"abstract":"At lepton colliders, the top-quark mass can be extracted with unparalleled precision from the total production cross section of top-antitop decay products near threshold. We discuss next-to-next-to-leading order non-resonant and electroweak corrections to this observable and their impact on the determination of top-quark properties.","PeriodicalId":140132,"journal":{"name":"Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2018)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116768457","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 HEPGAME project HEPGAME项目
Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2018) Pub Date : 2018-10-02 DOI: 10.22323/1.303.0061
J. Vermaseren
{"title":"The HEPGAME project","authors":"J. Vermaseren","doi":"10.22323/1.303.0061","DOIUrl":"https://doi.org/10.22323/1.303.0061","url":null,"abstract":"The HEPGAME project was funded by an ERC advanced grand to study \u0000the introduction of AI techniques in the evaluation of complicated Feynman \u0000diagrams. Its organization and its major physics results are presented.","PeriodicalId":140132,"journal":{"name":"Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2018)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121848802","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
Top pair production at NNLO NNLO的顶级鞋生产
Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2018) Pub Date : 2018-10-02 DOI: 10.22323/1.303.0033
S. Sapeta
{"title":"Top pair production at NNLO","authors":"S. Sapeta","doi":"10.22323/1.303.0033","DOIUrl":"https://doi.org/10.22323/1.303.0033","url":null,"abstract":"We report on progress towards calculating the NNLO cross section for top quark pair production in the the framework which combines the $q_T$-slicing method and small-$q_T$ factorization. In this contribution, we present the complete result for the small-$q_T$ soft function at NNLO, which constitutes the main challenge on the way to our goal. In order to evaluate the divergent integrals appearing in the calculation, we develop methods based on sector decomposition and differential equations. We present complete validation of our framework and provide results which are ready for application in the calculation of the $tbar t$ cross section at NNLO.","PeriodicalId":140132,"journal":{"name":"Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2018)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114352866","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
Threshold resummation in the rapidity distribution for a colorless particle production at the LHC 大型强子对撞机产生无色粒子的快速分布阈值恢复
Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2018) Pub Date : 2018-10-02 DOI: 10.22323/1.303.0043
Pulak Banerjee, Goutam Das, P. K. Dhani, V. Ravindran
{"title":"Threshold resummation in the rapidity distribution for a colorless particle production at the LHC","authors":"Pulak Banerjee, Goutam Das, P. K. Dhani, V. Ravindran","doi":"10.22323/1.303.0043","DOIUrl":"https://doi.org/10.22323/1.303.0043","url":null,"abstract":"We present a formalism to resum large threshold logarithms to all orders in perturbative QCD for the rapidity distribution of any colorless particle at the hadron colliders. Using the derived resummed coefficients in two dimensional Mellin space, we present the rapidity distributions for the Higgs as well as for the Drell-Yan production to NNLO+NNLL accuracy at the LHC. The resummed distributions give stable prediction against the variation of unphysical renormalisation and factorisation scales in both the cases. Perturbative convergence is also improved with the inclusion of the resummed result.","PeriodicalId":140132,"journal":{"name":"Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2018)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127690027","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: 2
Building bases for analytical fits of four-loop QED master integrals 为四环QED主积分的解析拟合建立基础
Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2018) Pub Date : 2018-10-02 DOI: 10.22323/1.303.0073
S. Laporta
{"title":"Building bases for analytical fits of four-loop QED master integrals","authors":"S. Laporta","doi":"10.22323/1.303.0073","DOIUrl":"https://doi.org/10.22323/1.303.0073","url":null,"abstract":"In this paper I will briefly describe how to find some elements of the basis necessary for the PSLQ fits of master integrals that appear in the calculation of four-loop contributions to the electron $g$-$2$ and the renormalization constants in QED. In particular we consider master integrals containing polylogarithms of the sixth root of the unity and elliptical integrals. A new high-precision numerical determination of $Z_2$ at four loops will be also shown.","PeriodicalId":140132,"journal":{"name":"Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2018)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130606650","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: 8
Three-loop massive scalar effective potential 三环大质量标量有效势
Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2018) Pub Date : 2018-10-02 DOI: 10.22323/1.303.0077
O. Veretin, B. Kniehl, A. Pikelner
{"title":"Three-loop massive scalar effective potential","authors":"O. Veretin, B. Kniehl, A. Pikelner","doi":"10.22323/1.303.0077","DOIUrl":"https://doi.org/10.22323/1.303.0077","url":null,"abstract":"We evaluate analytically three-loop effective potential in the theories with one Higgs boson and several Goldstone bosons. The results are applicable to the scalar sector of the Standard Model. Using the technique of differential equations we express all master integrals in terms of cyclotomic polylogarithms.","PeriodicalId":140132,"journal":{"name":"Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2018)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131778869","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
Precision studies of vector-boson production with heavy quarks at the LHC: the case of $Z + b$ jet. 大型强子对撞机中重夸克产生矢量玻色子的精确研究:以Z + b射流为例。
Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2018) Pub Date : 2018-10-02 DOI: 10.22323/1.303.0082
D. Figueroa, S. Honeywell, S. Quackenbush, L. Reina, C. Reuschle, D. Wackeroth
{"title":"Precision studies of vector-boson production with heavy quarks at the LHC: the case of $Z + b$ jet.","authors":"D. Figueroa, S. Honeywell, S. Quackenbush, L. Reina, C. Reuschle, D. Wackeroth","doi":"10.22323/1.303.0082","DOIUrl":"https://doi.org/10.22323/1.303.0082","url":null,"abstract":"After a brief introduction to the state of the art of theoretical predictions for electroweak vector-boson production with both top and bottom quarks at the LHC, we review the case of Z-boson production with b jets, and discuss the impact of NLO QCD+EW corrections and finite b-quark mass effects on the theoretical prediction for Z+b jet production.","PeriodicalId":140132,"journal":{"name":"Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2018)","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124723579","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: 1
Charm- and Bottom-Quark Masses: Recent Sum Rule Results 粲夸克和底夸克质量:最近的和规则结果
Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2018) Pub Date : 2018-10-02 DOI: 10.22323/1.303.0007
J. Kühn
{"title":"Charm- and Bottom-Quark Masses: Recent Sum Rule Results","authors":"J. Kühn","doi":"10.22323/1.303.0007","DOIUrl":"https://doi.org/10.22323/1.303.0007","url":null,"abstract":"Recent experimental results on the cross section for electron-positron annihilation into hadrons \u0000in the low energy region between roughly 3 GeV and 10 GeV, combined with an improved \u0000determination of the strong coupling and increasingly precise theory results on sum rules have \u0000lead to determinations of charm- and bottom-quark masses with accuracies of around 10 MeV. \u0000The final results, expressed in the MS scheme, have lead to $m_{c}$ (3 GeV) = 993(8) MeV and \u0000$m_{b}$ $(m_{b})$ = 4163(16) MeV, and are thus among the most precise determinations of these standard \u0000model parameters. These results are, furthermore, nicely consistent with completely independent \u0000lattice results and allow precise predictions for a number of experimental observables like Higgs \u0000decays into charm- or bottom-quarks. A critical analysis of the theoretical and experimental un- \u0000certainties of this analysis is presented in the following.","PeriodicalId":140132,"journal":{"name":"Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2018)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121381443","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
An Improved Method to Compute the Inverse Mellin Transform of Holonomic Sequences 一种计算完整序列反Mellin变换的改进方法
Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2018) Pub Date : 2018-10-02 DOI: 10.22323/1.303.0063
J. Ablinger
{"title":"An Improved Method to Compute the Inverse Mellin Transform of Holonomic Sequences","authors":"J. Ablinger","doi":"10.22323/1.303.0063","DOIUrl":"https://doi.org/10.22323/1.303.0063","url":null,"abstract":"We describe a new method to compute the inverse Mellin transform of holonomic sequences, that is based on a method to compute the Mellin transform of holonomic functions. The method is implemented in the computer algebra package HarmonicSums.","PeriodicalId":140132,"journal":{"name":"Proceedings of Loops and Legs in Quantum Field Theory — PoS(LL2018)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116721699","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信