Nothing Special   »   [go: up one dir, main page]

CERN Accelerating science

CERN Document Server Pronađeno je 16 zapisa  1 - 10slijedeći  idi na zapis: Pretraživanje je potrajalo 0.72 sekundi 
1.
The long-distance window of the hadronic vacuum polarization for the muon g-2 / RBC Collaboration
We provide the first ab-initio calculation of the Euclidean long-distance window of the isospin symmetric light-quark connected contribution to the hadronic vacuum polarization for the muon $g-2$ and find $a_\mu^{\rm LD,iso,conn,ud} = 411.4(4.3)(2.4) \times 10^{-10}$. [...]
arXiv:2410.20590 ; CERN-TH-2024-182.
- 12.
Fulltext
2.
Update of Euclidean windows of the hadronic vacuum polarization / RBC Collaboration
We compute the standard Euclidean window of the hadronic vacuum polarization using multiple independent blinded analyses. We improve the continuum and infinite-volume extrapolations of the dominant quark-connected light-quark isospin-symmetric contribution and address additional sub-leading systematic effects from sea-charm quarks and residual chiral-symmetry breaking from first principles. [...]
arXiv:2301.08696.- 2023-09-01 - 24 p. - Published in : Phys. Rev. D 108 (2023) 054507 Fulltext: Publication - PDF; 2301.08696 - PDF;
3.
A lattice QCD perspective on weak decays of b and c quarks Snowmass 2022 White Paper / Boyle, Peter A. (Brookhaven ; U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Chakraborty, Bipasha (Cambridge U., DAMTP) ; Davies, Christine T.H. (Glasgow U.) ; DeGrand, Thomas (Colorado U.) ; DeTar, Carleton (Utah U.) ; Del Debbio, Luigi (U. Edinburgh, Higgs Ctr. Theor. Phys.) ; El-Khadra, Aida X. (Illinois U., Urbana) ; Erben, Felix (U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Flynn, Jonathan M. (U. Southampton (main)) ; Gámiz, Elvira (Granada U., Theor. Phys. Astrophys.) et al.
Lattice quantum chromodynamics has proven to be an indispensable method to determine nonperturbative strong contributions to weak decay processes. [...]
arXiv:2205.15373 ; CERN-TH-2022-036 ; FERMILAB-CONF-22-433-SCD-T ; JLAB-THY-22-3582, MITP-22-020 ; MIT-CTP/5413 ; MS-TP-22-07 ; SI-HEP-2022-11.
- 19.
Fermilab Library Server - eConf - Fulltext - Fulltext
4.
Prospects for precise predictions of $a_\mu$ in the Standard Model / Colangelo, G. (U. Bern (main)) ; Davier, M. (IJCLab, Orsay) ; El-Khadra, A.X. (Illinois U., Urbana ; Fermilab) ; Hoferichter, M. (U. Bern (main)) ; Lehner, C. (Regensburg U.) ; Lellouch, L. (Marseille, CPT) ; Mibe, T. (KEK, Tsukuba) ; Roberts, B.L. (Boston U.) ; Teubner, T. (Liverpool U., Dept. Math.) ; Wittig, H. (U. Mainz, PRISMA ; Darmstadt, GSI) et al.
We discuss the prospects for improving the precision on the hadronic corrections to the anomalous magnetic moment of the muon, and the plans of the Muon $g-2$ Theory Initiative to update the Standard Model prediction..
arXiv:2203.15810 ; FERMILAB-CONF-22-236-T ; LTH 1303 ; MITP-22-030.
- 24.
Fermilab Library Server - eConf - Fulltext - Fulltext
5.
First results from the Muon g-2 Experiment at Fermilab / Lehner, Christoph (speaker) (University of Regensburg & BNL) ; Venanzoni, Graziano (speaker) (INFN)
The ultimate precision in the measurement of the muon anomaly, $a_\mu$ = (g – 2)/2, has been constantly pursued since the sixties, when CERN played a leading role in its determination with a series of pioneering experiments that ran until the late seventies. The present most accurate $a_\mu$ measurement was carried out by the E821 Experiment at Brookhaven (USA), resulting in a 3.7 standard deviation discrepancy with the theoretical prediction of the Standard Model of particle physics [...]
2021 - 7301. EP Seminar External link: Event details In : First results from the Muon g-2 Experiment at Fermilab
6.
Lattice determination of $I= 0$ and 2 $\pi\pi$ scattering phase shifts with a physical pion mass / RBC Collaboration
Phase shifts for $s$-wave $\pi\pi$ scattering in both the $I=0$ and $I=2$ channels are determined from a lattice QCD calculation performed on 741 gauge configurations obeying G-parity boundary conditions with a physical pion mass and lattice size of $32^3\times 64$. These results support our recent study of direct CP violation in $K\to\pi\pi$ decay \cite{Abbott:2020hxn}, improving our earlier 2015 calculation \cite{Bai:2015nea}. [...]
arXiv:2103.15131; CERN-TH-2021-039.- 2021-12-01 - 88 p. - Published in : Phys. Rev. D 104 (2021) 114506 Fulltext: 2103.15131 - PDF; PhysRevD.104.114506 - PDF;
7.
Hadronic light-by-light contribution to the muon anomalous magnetic moment from lattice QCD / Blum, Thomas (Connecticut U. ; RIKEN BNL) ; Jin, Luchang (Connecticut U. ; RIKEN BNL) ; Christ, Norman (Columbia U.) ; Hayakawa, Masashi (Nagoya U. ; Nishina Ctr., RIKEN) ; Izubuchi, Taku (Brookhaven ; RIKEN BNL) ; Jin, Luchang (Connecticut U. ; RIKEN BNL) ; Jung, Chulwoo (Brookhaven) ; Lehner, Christoph (Brookhaven ; Regensburg U.)
We report preliminary results for the hadronic light-by-light scattering contribution to the muon anomalous magnetic moment. Several ensembles using 2+1 flavors of M\"obius domain-wall fermions, generated by the RBC/UKQCD collaborations, are employed to take the continuum and infinite volume limits of finite volume lattice QED+QCD [...]
arXiv:1907.00864.- 2019 - 8 p. - Published in : (2019) , pp. 21-28 Fulltext: PDF;
In : 54th Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, Italy, 16 - 23 Mar 2019, pp.21-28
8.
The anomalous magnetic moment of the muon in the Standard Model / Aoyama, T. (KEK, Tsukuba ; Nishina Ctr., RIKEN ; KMI, Nagoya) ; Asmussen, N. (Southampton U.) ; Benayoun, M. (Paris U., VI-VII) ; Bijnens, J. (Lund U.) ; Blum, T. (Connecticut U. ; RIKEN BNL) ; Bruno, M. (CERN) ; Caprini, I. (Bucharest, IFIN-HH) ; Carloni Calame, C.M. (INFN, Pavia) ; Cè, M. (CERN ; Mainz U., Inst. Phys. ; Darmstadt, GSI ; Helmholtz Inst., Mainz) ; Colangelo, G. (U. Bern, AEC) et al.
We review the present status of the Standard Model calculation of the anomalous magnetic moment of the muon. This is performed in a perturbative expansion in the fine-structure constant $\alpha$ and is broken down into pure QED, electroweak, and hadronic contributions. [...]
arXiv:2006.04822; FERMILAB-PUB-20-207-T; INT-PUB-20-021; KEK Preprint 2020-5, MITP/20-028; KEK Preprint 2020-5, MITP/20-028; CERN-TH-2020-075; IFT-UAM/CSIC-20-74; LMU-ASC 18/20; LTH 1234, LU TP 20-20; LTH 1234, LU TP 20-20; MAN/HEP/2020/003; PSI-PR-20-06; UWThPh 2020-14; ZU-TH 18/20.- Geneva : CERN, 2020-12-03 - 166 p. - Published in : Phys. Rep. 887 (2020) 1-166 Fulltext: 2006.04822 - PDF; fermilab-pub-20-207-t - PDF; Fulltext from Publisher: PDF; External links: Fermilab News article; Fermilab Library Server (fulltext available)
9.
Direct CP violation and the $\Delta I=1/2$ rule in $K\to\pi\pi$ decay from the Standard Model / RBC Collaboration
We present a lattice QCD calculation of the $\Delta I=1/2$, $K\to\pi\pi$ decay amplitude $A_0$ and $\varepsilon'$, the measure of direct CP-violation in $K\to\pi\pi$ decay, improving our 2015 calculation of these quantities. Both calculations were performed with physical kinematics on a $32^3\times 64$ lattice with an inverse lattice spacing of $a^{-1}=1.3784(68)$ GeV. [...]
arXiv:2004.09440; CERN-TH-2020-058; MIT-CTP/5197.- 2020-09-18 - 95 p. - Published in : Phys. Rev. D 102 (2020) 054509 Article from SCOAP3: PDF; Fulltext: PDF; External links: Press Release; Physics Synopsis
10.
Exclusive Channel Study of the Muon HVP / Bruno, Mattia (CERN) ; Izubuchi, Taku (Brookhaven ; RIKEN BNL) ; Lehner, Christoph (U. Regensburg (main) ; Brookhaven) ; Meyer, Aaron S. (Brookhaven)
The Hadronic Vacuum Polarization (HVP) is a dominant contribution to the theoretical uncertainty of the muon anomalous magnetic moment. The uncertainty in a lattice QCD calculation of the connected light-quark contribution to the HVP is dominated by the long-distance region of the vector correlation function. [...]
arXiv:1910.11745; CERN-TH-2019-179.- SISSA, 2019-11-26 - 7 p. - Published in : PoS LATTICE2019 (2019) 239 Fulltext: PDF;
In : 37th International Symposium on Lattice Field Theory, Wuhan, Hubei, China, 16 - 22 Jun 2019, pp.239

CERN Document Server : Pronađeno je 16 zapisa   1 - 10slijedeći  idi na zapis:
Također vidi: slična imena autora
14 Lehner, C
1 Lehner, C E
1 Lehner, Christof
34 Lehner, Christoph
Interested in being notified about new results for this query?
Set up a personal email alert or subscribe to the RSS feed.
Niste pronašli ono što ste htjeli? Pokušajte pretražiti na ovim serverima:
Lehner, C. u Amazon
Lehner, C. u CERN EDMS
Lehner, C. u CERN Intranet
Lehner, C. u CiteSeer
Lehner, C. u Google Books
Lehner, C. u Google Scholar
Lehner, C. u Google Web
Lehner, C. u IEC
Lehner, C. u IHS
Lehner, C. u INSPIRE
Lehner, C. u ISO
Lehner, C. u KISS Books/Journals
Lehner, C. u KISS Preprints
Lehner, C. u NEBIS
Lehner, C. u SLAC Library Catalog
Lehner, C. u Scirus