Invariant-mass distribution of top-quark pairs and top-quark mass determination*
- Publication type:
- Journal article
- Metadata:
-
- Autoren
- Wan-Li Ju
- Guoxing Wang
- Xing Wang
- Xiaofeng Xu
- Yongqi Xu
- Li Lin Yang
- Autoren-URL
- https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000566118300001&DestLinkType=FullRecord&DestApp=WOS_CPL
- DOI
- 10.1088/1674-1137/44/9/091001
- eISSN
- 2058-6132
- Externe Identifier
- Clarivate Analytics Document Solution ID: NJ5YG
- ISSN
- 1674-1137
- Ausgabe der Veröffentlichung
- 9
- Zeitschrift
- CHINESE PHYSICS C
- Schlüsselwörter
- top quark
- QCD
- resummation
- Artikelnummer
- ARTN 091001
- Datum der Veröffentlichung
- 2020
- Status
- Published
- Titel
- Invariant-mass distribution of top-quark pairs and top-quark mass determination*
- Sub types
- Article
- Ausgabe der Zeitschrift
- 44
Data source: Web of Science (Lite)
- Other metadata sources:
-
- Abstract
- <jats:title>Abstract</jats:title> <jats:p>In this study, we investigate the invariant-mass distribution of top-quark pairs near the 2<jats:italic>m<jats:sub>t</jats:sub> </jats:italic> threshold, which strongly influences the determination of the top-quark mass <jats:italic>m<jats:sub>t</jats:sub> </jats:italic>. Higher-order non-relativistic corrections lead to large contributions, which are not included in the state-of-the-art theoretical predictions. A factorization formula is derived to resum such corrections to all orders in the strong-coupling, and necessary ingredients are calculated to perform the resummation at next-to-leading power. We combine the resummation with fixed-order results and present phenomenologically relevant numerical results. The resummation effect significantly increases the differential cross-section in the threshold region and makes the theoretical prediction more compatible with experimental data. We estimate that using our prediction in the determination of <jats:italic>m<jats:sub>t</jats:sub> </jats:italic> will lead to a value closer to the direct measurement result. </jats:p>
- Autoren
- Wan-Li Ju
- Guoxing Wang
- Xing Wang
- Xiaofeng Xu
- Yongqi Xu
- Li Lin Yang
- DOI
- 10.1088/1674-1137/44/9/091001
- eISSN
- 2058-6132
- ISSN
- 1674-1137
- Ausgabe der Veröffentlichung
- 9
- Zeitschrift
- Chinese Physics C
- Paginierung
- 091001 - 091001
- Datum der Veröffentlichung
- 2020
- Status
- Published
- Herausgeber
- IOP Publishing
- Herausgeber URL
- http://dx.doi.org/10.1088/1674-1137/44/9/091001
- Datum der Datenerfassung
- 2021
- Titel
- Invariant-mass distribution of top-quark pairs and top-quark mass determination *
- Ausgabe der Zeitschrift
- 44
Data source: Crossref
- Abstract
- We investigate the invariant-mass distribution of top-quark pairs near the $2m_t$ threshold, which has strong impact on the determination of the top-quark mass $m_t$. We show that higher-order non-relativistic corrections lead to large contributions which are not included in the state-of-the-art theoretical predictions. We derive a factorization formula to resum such corrections to all orders in the strong-coupling, and calculate necessary ingredients to perform the resummation at next-to-leading power. We combine the resummation with fixed-order results and present phenomenologically relevant numeric results. We find that the resummation effect significantly enhances the differential cross section in the threshold region, and makes the theoretical prediction more compatible with experimental data. We estimate that using our prediction in the determination of $m_t$ will lead to a value closer to the result of direct measurement.
- Autoren
- Wan-Li Ju
- Guoxing Wang
- Xing Wang
- Xiaofeng Xu
- Yongqi Xu
- Li Lin Yang
- Autoren-URL
- http://arxiv.org/abs/1908.02179v4
- Schlüsselwörter
- hep-ph
- hep-ph
- Notes
- 6 pages, 4 figures; v4: references added
- Datum der Veröffentlichung
- 2019
- Herausgeber URL
- http://dx.doi.org/10.1088/1674-1137/44/9/091001
- Datum der Datenerfassung
- 2019
- Datum, an dem der Datensatz öffentlich gemacht wurde
- 2019
- Titel
- Invariant-mass distribution of top-quark pairs and top-quark mass determination
Files
1908.02179v4.pdf
Data source: arXiv
- Beziehungen:
- Property of