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Author |
Agullo, I.; Navarro-Salas, J.; Olmo, G.J.; Parker, L. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Revising the observable consequences of slow-roll inflation |
Type |
Journal Article |
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Year |
2010 |
Publication |
Physical Review D |
Abbreviated Journal |
Phys. Rev. D |
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Volume |
81 |
Issue ![sorted by Issue field, descending order (down)](img/sort_desc.gif) |
4 |
Pages |
043514 - 14pp |
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Abstract |
We study the generation of primordial perturbations in a (single-field) slow-roll inflationary Universe. In momentum space, these (Gaussian) perturbations are characterized by a zero mean and a nonzero variance Delta(2) (k, t). However, in position space the variance diverges in the ultraviolet. The requirement of a finite variance in position space forces one to regularize Delta(2) (k, t). This can (and should) be achieved by proper renormalization in an expanding Universe in a unique way. This affects the predicted scalar and tensorial power spectra (evaluated when the modes acquire classical properties) for wavelengths that today are at observable scales. As a consequence, the imprint of slow-roll inflation on the cosmic microwave background anisotropies is significantly altered. We find a nontrivial change in the consistency condition that relates the tensor-to-scalar ratio r to the spectral indices. For instance, an exact scale-invariant tensorial power spectrum, n(t) = 0, is now compatible with a nonzero ratio r approximate to 0.12 +/- 0.06, which is forbidden by the standard prediction (r = -8n(t)). The influence of relic gravitational waves on the cosmic microwave background may soon come within the range of planned measurements, offering a nontrivial test of the new predictions. |
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Address |
[Agullo, Ivan; Olmo, Gonzalo J.; Parker, Leonard] Univ Wisconsin, Dept Phys, Milwaukee, WI 53201 USA, Email: ivan.agullo@uv.es |
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Publisher |
Amer Physical Soc |
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English |
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ISSN |
1550-7998 |
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Notes |
ISI:000275898500028 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ elepoucu @ |
Serial |
479 |
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Author |
Bordes, J.; Chan, H.M.; Tsun, T.S. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
A solution to the strong CP problem transforming the theta angle to the KM CP-violating phase |
Type |
Journal Article |
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Year |
2010 |
Publication |
International Journal of Modern Physics A |
Abbreviated Journal |
Int. J. Mod. Phys. A |
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Volume |
25 |
Issue ![sorted by Issue field, descending order (down)](img/sort_desc.gif) |
32 |
Pages |
5897-5911 |
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Keywords |
Strong CP phase; CKM matrix; CP violation |
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Abstract |
It is shown that in the scheme with a rotating fermion mass matrix (i.e. one with a scale-dependent orientation in generation space) suggested earlier for explaining fermion mixing and mass hierarchy, the theta angle term in the QCD action of topological origin can be eliminated by chiral transformations, while giving still nonzero masses to all quarks. Instead, the effects of such transformations get transmitted by the rotation to the CKM matrix as the KM phase giving, for theta of order unity, a Jarlskog invariant typically of order 10(-5), as experimentally observed. Strong and weak CP violations appear then as just two facets of the same phenomenon. |
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Address |
[Bordes, Jose] Univ Valencia, Ctr Mixto CSIC, Dept Fis Teor, E-46100 Burjassot, Valencia, Spain, Email: jose.m.bordes@uv.es |
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Publisher |
World Scientific Publ Co Pte Ltd |
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English |
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ISSN |
0217-751x |
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Notes |
ISI:000288429300006 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
536 |
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Author |
Amelino-Camelia, G. et al; Bernabeu, J.; Passemar, E. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Physics with the KLOE-2 experiment at the upgraded DA Phi NE |
Type |
Journal Article |
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Year |
2010 |
Publication |
European Physical Journal C |
Abbreviated Journal |
Eur. Phys. J. C |
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Volume |
68 |
Issue ![sorted by Issue field, descending order (down)](img/sort_desc.gif) |
3-4 |
Pages |
619-681 |
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Abstract |
Investigation at a f-factory can shed light on several debated issues in particle physics. We discuss: (i) recent theoretical development and experimental progress in kaon physics relevant for the Standard Model tests in the flavor sector, (ii) the sensitivity we can reach in probing CPT and Quantum Mechanics from time evolution of entangled-kaon states, (iii) the interest for improving on the present measurements of non-leptonic and radiative decays of kaons and eta/eta' mesons, (iv) the contribution to understand the nature of light scalar mesons, and (v) the opportunity to search for narrow di-lepton resonances suggested by recent models proposing a hidden dark-matter sector. We also report on the e(+)e(-) physics in the continuum with the measurements of (multi) hadronic cross sections and the study of gamma gamma processes. |
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Address |
[Amelino-Camelia, G.; Bini, C.; De Santis, A.; De Zorzi, G.; Di Domenico, A.; Fiore, S.; Franzini, P.; Gauzzi, P.] Univ Roma La Sapienza, Dipartimento Fis, Rome, Italy, Email: Caterina.Bloise@lnf.infn.it |
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Publisher |
Springer |
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English |
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Series Volume |
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Edition |
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ISSN |
1434-6044 |
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Conference |
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Notes |
ISI:000280642600022 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
251 |
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Permanent link to this record |
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Author |
Bordes, J.; Chan, H.M.; Tsun, T.S. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
Possible anomalies in Higgs decay: charm-suppression and flavour-violation |
Type |
Journal Article |
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Year |
2010 |
Publication |
European Physical Journal C |
Abbreviated Journal |
Eur. Phys. J. C |
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Volume |
65 |
Issue ![sorted by Issue field, descending order (down)](img/sort_desc.gif) |
3-4 |
Pages |
537-542 |
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Abstract |
It is suggested that the Higgs boson may have a branching ratio into the c (c) over bar c mode suppressed by several orders of magnitude compared with conventional predictions and in addition some small but detectable flavour-violating modes such as b (s) over bar and tau(mu) over bar. The suggestion is based on a scheme proposed and tested earlier for explaining the mixing pattern and mass hierarchy of fermions in terms of a rotating mass matrix. If confirmed, the effects would cast new light on the geometric origin of fermion generations and of the Higgs field itself. |
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Address |
[Bordes, Jose] Univ Valencia, Dept Fis Teor, E-46100 Valencia, Spain, Email: jose.m.bordes@uv.es |
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Publisher |
Springer |
Place of Publication |
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Language |
English |
Summary Language |
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Original Title |
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Series Editor |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
1434-6044 |
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Expedition |
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Conference |
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Notes |
ISI:000274327200016 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
261 |
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Permanent link to this record |
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Author |
Antonelli, M.; Cirigliano, V.; Isidori, G.; Mescia, F.; Moulson, M.; Neufeld, H.; Passemar, E.; Palutan, M.; Sciascia, B.; Sozzi, M.; Wanke, R.; Yushchenko, O.P. |
![goto web page (via DOI) doi](img/doi.gif)
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Title |
An evaluation of |Vus| and precise tests of the Standard Model from world data on leptonic and semileptonic kaon decays |
Type |
Journal Article |
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Year |
2010 |
Publication |
European Physical Journal C |
Abbreviated Journal |
Eur. Phys. J. C |
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Volume |
69 |
Issue ![sorted by Issue field, descending order (down)](img/sort_desc.gif) |
3-4 |
Pages |
399-424 |
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Keywords |
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Abstract |
We present a global analysis of leptonic and semileptonic kaon decay data, including all recent results published by the BNL-E865, KLOE, KTeV, ISTRA+ and NA48 experiments. This analysis, in conjunction with precise lattice calculations of the hadronic matrix elements now available, leads to a very precise determination of broken vertical bar V-us broken vertical bar and allows us to perform several stringent tests of the Standard Model. |
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Address |
[Antonelli, M.; Isidori, G.; Moulson, M.; Palutan, M.; Sciascia, B.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, RM, Italy, Email: Matthew.Moulson@lnf.infn.it |
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Thesis |
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Publisher |
Springer |
Place of Publication |
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Language |
English |
Summary Language |
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Original Title |
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Series Editor |
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Series Title |
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Abbreviated Series Title |
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Series Volume |
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Series Issue |
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Edition |
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ISSN |
1434-6044 |
ISBN |
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Medium |
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Area |
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Expedition |
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Conference |
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Notes |
ISI:000283361800005 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ elepoucu @ |
Serial |
350 |
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Permanent link to this record |