New BBN limits on physics beyond the standard model from 4He
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In this article, a new analysis of the primordial 4He mass fraction is presented, based on which a host of particle properties such as the number of relativistic species at the time of BBN, the variations of fundamental couplings such as αem and GN, and limits on decaying particles are derived.About:
This article is published in Astroparticle Physics.The article was published on 2005-04-01 and is currently open access. It has received 367 citations till now. The article focuses on the topics: Big Bang nucleosynthesis.read more
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Seven-year wilkinson microwave anisotropy probe (wmap *) observations: cosmological interpretation
Eiichiro Komatsu,Kristine M. Smith,Jo Dunkley,Charles L. Bennett,B. Gold,Gary Hinshaw,Norman Jarosik,Davin Larson,M. R. Nolta,Lyman A. Page,David N. Spergel,Mark Halpern,Robert S. Hill,A. Kogut,Michele Limon,S. S. Meyer,N. Odegard,Gregory S. Tucker,Janet Weiland,Edward J. Wollack,Edward L. Wright +20 more
TL;DR: In this article, a combination of seven-year data from WMAP and improved astrophysical data rigorously tests the standard cosmological model and places new constraints on its basic parameters and extensions.
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Five-year wilkinson microwave anisotropy probe * observations: likelihoods and parameters from the wmap data
Jo Dunkley,Jo Dunkley,Eiichiro Komatsu,M. R. Nolta,David N. Spergel,Davin Larson,Gary Hinshaw,Lyman A. Page,Charles L. Bennett,B. Gold,N. Jarosik,Janet Weiland,Mark Halpern,Robert S. Hill,Alan J. Kogut,Michele Limon,S. S. Meyer,Gregory S. Tucker,Edward J. Wollack,Edward L. Wright +19 more
TL;DR: In this paper, the authors present cosmological constraints from the Wilkinson Microwave Anisotropy Probe (WMAP) alone for both the ACDM model and a set of possible extensions.
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Dark Matter Candidates from Particle Physics and Methods of Detection
TL;DR: The identity of dark matter is a question of central importance in both astrophysics and particle physics as discussed by the authors, and recent progress has greatly expanded the list of well-motivated candidates and the possible signatures of the dark matter.
Journal ArticleDOI
Dark Matter Candidates from Particle Physics and Methods of Detection
TL;DR: The identity of dark matter is a question of central importance in both astrophysics and particle physics as mentioned in this paper, and recent progress has greatly expanded the list of well-motivated candidates.
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Massive neutrinos and cosmology
Julien Lesgourgues,Sergio Pastor +1 more
TL;DR: In this paper, the authors describe how free-streaming massive neutrinos affect the evolution of cosmological perturbations, and summarize the current bounds on the sum of neutrino masses that can be derived from various combinations of data, including the most recent analysis by the WMAP team.
References
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First year Wilkinson Microwave Anisotropy Probe (WMAP) observations: Determination of cosmological parameters
David N. Spergel,Licia Verde,Hiranya V. Peiris,Eiichiro Komatsu,M. R. Nolta,Charles L. Bennett,Mark Halpern,Gary Hinshaw,N. Jarosik,Alan J. Kogut,Michele Limon,Michele Limon,S. S. Meyer,Lyman A. Page,Gregory S. Tucker,Gregory S. Tucker,Gregory S. Tucker,Janet L. Weiland,Edward J. Wollack,Edward L. Wright +19 more
TL;DR: In this article, the authors find that the emerging standard model of cosmology, a flat -dominated universe seeded by a nearly scale-invariant adiabatic Gaussian fluctuations, fits the WMAP data.
Journal ArticleDOI
Review of particle properties.
K. Hagiwara,Ken Ichi Hikasa,Koji Nakamura,Masaharu Tanabashi,M. Aguilar-Benitez,Claude Amsler,R. M. Barnett,Patricia R. Burchat,C. D. Carone,C. Caso,G. Conforto,Olav Dahl,Michael Doser,Semen Eidelman,Jonathan L. Feng,L. K. Gibbons,Maury Goodman,Christoph Grab,D. E. Groom,Atul Gurtu,Atul Gurtu,K. G. Hayes,J. J. Herna`ndez-Rey,K. Honscheid,Christopher Kolda,Michelangelo L. Mangano,David Manley,Aneesh V. Manohar,John March-Russell,Alberto Masoni,Ramon Miquel,Klaus Mönig,Hitoshi Murayama,Hitoshi Murayama,S. Sánchez Navas,Keith A. Olive,Luc Pape,C. Patrignani,A. Piepke,Matts Roos,John Terning,Nils A. Tornqvist,T. G. Trippe,Petr Vogel,C. G. Wohl,Ron L. Workman,W-M. Yao,B. Armstrong,P. S. Gee,K. S. Lugovsky,S. B. Lugovsky,V. S. Lugovsky,Marina Artuso,D. Asner,K. S. Babu,E. L. Barberio,Marco Battaglia,H. Bichsel,O. Biebel,Philippe Bloch,Robert N. Cahn,Ariella Cattai,R. S. Chivukula,R. Cousins,G. A. Cowan,Thibault Damour,K. Desler,R. J. Donahue,D. A. Edwards,Victor Daniel Elvira,Jens Erler,V. V. Ezhela,A Fassò,W. Fetscher,Brian D. Fields,B. Foster,Daniel Froidevaux,Masataka Fukugita,Thomas K. Gaisser,L. Garren,H.-J. Gerber,Frederick J. Gilman,Howard E. Haber,C. A. Hagmann,J.L. Hewett,Ian Hinchliffe,Craig J. Hogan,G. Höhler,P. Igo-Kemenes,John David Jackson,Kurtis F Johnson,D. Karlen,B. Kayser,S. R. Klein,Konrad Kleinknecht,I.G. Knowles,P. Kreitz,Yu V. Kuyanov,R. Landua,Paul Langacker,L. S. Littenberg,Alan D. Martin,Tatsuya Nakada,Tatsuya Nakada,Meenakshi Narain,Paolo Nason,John A. Peacock,Helen R. Quinn,Stuart Raby,Georg G. Raffelt,E. A. Razuvaev,B. Renk,L. Rolandi,Michael T Ronan,L.J. Rosenberg,Christopher T. Sachrajda,A. I. Sanda,Subir Sarkar,Michael Schmitt,O. Schneider,Douglas Scott,W. G. Seligman,Michael H. Shaevitz,Torbjörn Sjöstrand,George F. Smoot,Stefan M Spanier,H. Spieler,N. J. C. Spooner,Mark Srednicki,A. Stahl,Todor Stanev,M. Suzuki,N. P. Tkachenko,German Valencia,K. van Bibber,Manuella Vincter,D. R. Ward,Bryan R. Webber,M R Whalley,Lincoln Wolfenstein,J. Womersley,C. L. Woody,O. V. Zenin +142 more
TL;DR: This biennial Review summarizes much of Particle Physics using data from previous editions, plus 2205 new measurements from 667 papers, and features expanded coverage of CP violation in B mesons and of neutrino oscillations.
Journal ArticleDOI
First year Wilkinson Microwave Anisotropy Probe (WMAP) observations: Preliminary maps and basic results
Charles L. Bennett,Mark Halpern,Gary Hinshaw,N. Jarosik,Alan J. Kogut,Michele Limon,Michele Limon,S. S. Meyer,Lyman A. Page,David N. Spergel,Gregory S. Tucker,Gregory S. Tucker,Gregory S. Tucker,Edward J. Wollack,Edward L. Wright,Cris W. Barnes,M. R. Greason,Robert S. Hill,Eiichiro Komatsu,M. R. Nolta,N. Odegard,Hiranya V. Peiris,Licia Verde,Janet Weiland +23 more
TL;DR: In this paper, the authors present full sky microwave maps in five frequency bands (23 to 94 GHz) from the WMAP first year sky survey, which are consistent with the 7 in. full-width at half-maximum (FWHM) Cosmic Background Explorer (COBE) maps.
Journal ArticleDOI
Cosmological parameters from SDSS and WMAP
Max Tegmark,Max Tegmark,Michael A. Strauss,Michael R. Blanton,Kevork N. Abazajian,Scott Dodelson,Scott Dodelson,Håvard B. Sandvik,Xiaomin Wang,David H. Weinberg,Idit Zehavi,Neta A. Bahcall,Fiona Hoyle,David J. Schlegel,Roman Scoccimarro,Michael S. Vogeley,Andreas A. Berlind,Tamás Budavári,Andrew J. Connolly,Daniel J. Eisenstein,Douglas P. Finkbeiner,Joshua A. Frieman,Joshua A. Frieman,James E. Gunn,Lam Hui,Bhuvnesh Jain,David Johnston,David Johnston,Stephen M. Kent,Huan Lin,Reiko Nakajima,Robert C. Nichol,Jeremiah P. Ostriker,Adrian Pope,Ryan Scranton,Uroš Seljak,Ravi K. Sheth,Albert Stebbins,Alexander S. Szalay,István Szapudi,Yongzhong Xu,James Annis,Jon Brinkmann,Scott Burles,Francisco J. Castander,István Csabai,Jon Loveday,Mamoru Doi,Masataka Fukugita,Bruce Gillespie,Greg Hennessy,David W. Hogg,Željko Ivezić,Gillian R. Knapp,D. Q. Lamb,Brian C. Lee,Robert H. Lupton,Timothy A. McKay,Peter Z. Kunszt,Jeffrey A. Munn,Liam O'Connell,John Peoples,Jeffrey R. Pier,Michael Richmond,Constance M. Rockosi,Donald P. Schneider,Christopher Stoughton,Douglas L. Tucker,Daniel E. Vanden Berk,Brian Yanny,Donald G. York +70 more
TL;DR: In this paper, the authors measured cosmological parameters using the three-dimensional power spectrum P(k) from over 200,000 galaxies in the Sloan Digital Sky Survey (SDSS) in combination with WMAP and other data.
Journal ArticleDOI
First Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results
Charles L. Bennett,Mark Halpern,Gary Hinshaw,N. Jarosik,Alan J. Kogut,Michele Limon,Michele Limon,S. S. Meyer,Lyman A. Page,David N. Spergel,Gregory S. Tucker,Edward J. Wollack,Edward L. Wright,Cris W. Barnes,M. R. Greason,Robert S. Hill,Eiichiro Komatsu,M. R. Nolta,N. Odegard,H. V. Peirs,Licia Verde,Janet Weiland +21 more
Abstract: We present full sky microwave maps in five bands (23 to 94 GHz) from the WMAP first year sky survey. Calibration errors are 1 per mode to l=658. The temperature-polarization cross-power spectrum reveals both acoustic features and a large angle correlation from reionization. The optical depth of reionization is 0.17 +/- 0.04, which implies a reionization epoch of 180+220-80 Myr (95% CL) after the Big Bang at a redshift of 20+10-9 (95% CL) for a range of ionization scenarios. This early reionization is incompatible with the presence of a significant warm dark matter density. The age of the best-fit universe is 13.7 +/- 0.2 Gyr old. Decoupling was 379+8-7 kyr after the Big Bang at a redshift of 1089 +/- 1. The thickness of the decoupling surface was dz=195 +/- 2. The matter density is Omega_m h^2 = 0.135 +0.008 -0.009, the baryon density is Omega_b h^2 = 0.0224 +/- 0.0009, and the total mass-energy of the universe is Omega_tot = 1.02 +/- 0.02. The spectral index of scalar fluctuations is fit as n_s = 0.93 +/- 0.03 at wavenumber k_0 = 0.05 Mpc^-1, with a running index slope of dn_s/d ln k = -0.031 +0.016 -0.018 in the best-fit model. This flat universe model is composed of 4.4% baryons, 22% dark matter and 73% dark energy. The dark energy equation of state is limited to w<-0.78 (95% CL). Inflation theory is supported with n_s~1, Omega_tot~1, Gaussian random phases of the CMB anisotropy, and superhorizon fluctuations. An admixture of isocurvature modes does not improve the fit. The tensor-to-scalar ratio is r(k_0=0.002 Mpc^-1)<0.90 (95% CL).
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