Loop corrections to ΔNeff in large volume models

被引：16

作者：

Angus, Stephen ^{[1
]}

Conlon, Joseph P. ^{[1
]}

Haisch, Ulrich ^{[1
]}

Powell, Andrew J. ^{[1
]}

机构：

[1] Univ Oxford, Rudolph Peierls Ctr Theoret Phys, Oxford OX1 3NP, England

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2013年 / 12期

基金：

欧洲研究理事会;

关键词：

Compactification and String Models; Cosmology of Theories beyond the SM; Supersymmetric Standard Model; Renormalization Group; RENORMALIZATION-GROUP EQUATIONS; QUANTUM-FIELD THEORY; COSMOLOGICAL IMPLICATIONS;

D O I：

10.1007/JHEP12(2013)061

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

In large volume models reheating is driven by the decays of the volume modulus to the visible sector, while the decays to its axion partners result in dark radiation. In this article we discuss the impact of loop corrections on the only model-independent visible decay channel: the decay into Higgs pairs via a Giudice-Masiero term. Including such radiative effects leads to a more precise determination of the relative fraction of dark radiation, since by contrast all loop corrections to the volume axion decay mode are Planck suppressed. Assuming an MSSM spectrum and that the Giudice-Masiero coupling is fixed at the string scale by a shift symmetry in the Higgs sector, we arrive at a prediction for the effective number of neutrinos. The result turns out to be too large to be consistent with data, highly disfavouring the minimal model.

引用

页数：14

共 35 条

[1] Observation of a new particle in the search for the Standard Model Higgs boson with the ATLAS detector at the LHC [J].

Aad, G. ;

Abajyan, T. ;

Abbott, B. ;

Abdallah, J. ;

Khalek, S. Abdel ;

Abdelalim, A. A. ;

Abdinov, O. ;

Aben, R. ;

Abi, B. ;

Abolins, M. ;

AbouZeid, U. S. ;

Abramowicz, H. ;

Abreu, H. ;

Acharya, B. S. ;

Adamczyk, L. ;

Adams, D. L. ;

Addy, T. N. ;

Adelman, J. ;

Adomeit, S. ;

Adragna, P. ;

Adye, T. ;

Aefsky, S. ;

Aguilar-Saavedra, J. A. ;

Agustoni, M. ;

Aharrouche, M. ;

Ahlen, S. P. ;

Ahles, F. ;

Ahmad, A. ;

Ahsan, M. ;

Aielli, G. ;

Akdogan, T. ;

Akesson, T. P. A. ;

Akimoto, G. ;

Akimov, A. V. ;

Alam, M. S. ;

Alam, M. A. ;

Albert, J. ;

Albrand, S. ;

Aleksa, M. ;

Aleksandrov, I. N. ;

Alessandria, F. ;

Alexa, C. ;

Alexander, G. ;

Alexandre, G. ;

Alexopoulos, T. ;

Alhroob, M. ;

Aliev, M. ;

Alimonti, G. ;

Alison, J. ;

Allbrooke, B. M. M. .

PHYSICS LETTERS B, 2012, 716 (01) :1-29

[2] Combination of the top-quark mass measurements from the Tevatron collider [J].

Aaltonen, T. ;

Abazov, V. M. ;

Abbott, B. ;

Acharya, B. S. ;

Adams, M. ;

Adams, T. ;

Alexeev, G. D. ;

Alkhazov, G. ;

Alton, A. ;

Alvarez Gonzalez, B. ;

Alverson, G. ;

Amerio, S. ;

Amidei, D. ;

Anastassov, A. ;

Annovi, A. ;

Antos, J. ;

Apollinari, G. ;

Appel, J. A. ;

Arisawa, T. ;

Artikov, A. ;

Asaadi, J. ;

Ashmanskas, W. ;

Askew, A. ;

Atkins, S. ;

Auerbach, B. ;

Augsten, K. ;

Aurisano, A. ;

Avila, C. ;

Azfar, F. ;

Badaud, F. ;

Badgett, W. ;

Bae, T. ;

Bagby, L. ;

Baldin, B. ;

Bandurin, D. V. ;

Banerjee, S. ;

Barbaro-Galtieri, A. ;

Barberis, E. ;

Baringer, P. ;

Barnes, V. E. ;

Barnett, B. A. ;

Barria, P. ;

Bartlett, J. F. ;

Bartos, P. ;

Bassler, U. ;

Bauce, M. ;

Bazterra, V. ;

Bean, A. ;

Bedeschi, F. ;

Begalli, M. .

PHYSICAL REVIEW D, 2012, 86 (09)

[3] Planck 2013 results. XVI. Cosmological parameters [J].

Ade, P. A. R. ;

Aghanim, N. ;

Armitage-Caplan, C. ;

Arnaud, M. ;

Ashdown, M. ;

Atrio-Barandela, F. ;

Aumont, J. ;

Baccigalupi, C. ;

Banday, A. J. ;

Barreiro, R. B. ;

Bartlett, J. G. ;

Battaner, E. ;

Benabed, K. ;

Benoit, A. ;

Benoit-Levy, A. ;

Bernard, J. -P. ;

Bersanelli, M. ;

Bielewicz, P. ;

Bobin, J. ;

Bock, J. J. ;

Bonaldi, A. ;

Bond, J. R. ;

Borrill, J. ;

Bouchet, F. R. ;

Bridges, M. ;

Bucher, M. ;

Burigana, C. ;

Butler, R. C. ;

Calabrese, E. ;

Cappellini, B. ;

Cardoso, J. -F. ;

Catalano, A. ;

Challinor, A. ;

Chamballu, A. ;

Chary, R. -R. ;

Chen, X. ;

Chiang, H. C. ;

Chiang, L. -Y ;

Christensen, P. R. ;

Church, S. ;

Clements, D. L. ;

Colombi, S. ;

Colombo, L. P. L. ;

Couchot, F. ;

Coulais, A. ;

Crill, B. P. ;

Curto, A. ;

Cuttaia, F. ;

Danese, L. ;

Davies, R. D. .

ASTRONOMY & ASTROPHYSICS, 2014, 571

[4] SOFTSUSY: A program for calculating supersymmetric spectra [J].

Allanach, BC .

COMPUTER PHYSICS COMMUNICATIONS, 2002, 143 (03) :305-331

[5]

[Anonymous], JHEP

[6]

[Anonymous], JHEP

[7]

[Anonymous], JHEP

[8]

[Anonymous], ARXIV12126267

[9]

[Anonymous], JHEP

[10]

Balasubramanian V., 2005, JHEP, V03, P007

← 1 2 3 4 →