Constraints on a very light CP-odd Higgs of the NMSSM and other axion-like particles

被引：68

作者：

Andreas, Sarah ^{[1
]}

Lebedev, Oleg ^{[1
]}

Ramos-Sanchez, Saul ^{[1
]}

Ringwald, Andreas ^{[1
]}

机构：

[1] Deutsch Elektronen Synchrotron DESY, D-22603 Hamburg, Germany

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2010年 / 08期

关键词：

Higgs Physics; Rare Decays; Beyond Standard Model; Supersymmetric Standard Model; MINI-LANDSCAPE; SEARCH; BOSONS; MODEL; SIGNALS; LIMITS; DECAY;

D O I：

10.1007/JHEP08(2010)003

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 the NMSSM, a light CP-odd Higgs arises due to spontaneous breaking of approximate symmetries such as Peccei-Quinn or R-symmetry and is motivated by string theory. The case when it is heavier than two muons is well studied and constrained. We analyze various meson decay, g 2, beam dump and reactor bounds on the CP-odd Higgs with mass below the muon threshold, in particular, addressing the question how light a CP-odd Higgs can be. We find that it has to be heavier than 210 MeV or have couplings to fermions 4 orders of magnitude below those of the Standard Model Higgs. Our analysis applies more generally to couplings of a light pseudoscalar to matter.

引用

页数：20

共 75 条

[31] Search for axions from the Kuo-Sheng nuclear power reactor with a high-purity germanium detector [J].

Chang, H. M. ;

Wong, H. T. ;

Chou, M. H. ;

Deniz, M. ;

Huang, H. X. ;

Lee, F. S. ;

Li, H. B. ;

Li, J. ;

Liao, H. Y. ;

Lin, S. T. ;

Singh, V. ;

Wu, S. C. ;

Xin, B. .

PHYSICAL REVIEW D, 2007, 75 (05)

[32] Rare decay π0 → e+e- constraints on the light CP-odd Higgs in NMSSM [J].

Chang, Qin ;

Yang, Ya-Dong .

PHYSICS LETTERS B, 2009, 676 (1-3) :88-93

[33] AN UNAMBIGUOUS SEARCH FOR A LIGHT HIGGS BOSON [J].

DAVIER, M ;

NGOC, HN .

PHYSICS LETTERS B, 1989, 229 (1-2) :150-155

[34]

DERMISCK R, 2007, PHYS REV D, V81

[35] Escaping the large fine-tuning and little hierarchy problems in the next to minimal supersymmetric model and h→aa decays -: art. no. 041801 [J].

Dermísek, R ;

Gunion, JF .

PHYSICAL REVIEW LETTERS, 2005, 95 (04)

[36]

DERMISEK R, 2004, PHYS REV D, V81

[37] Next-to-minimal supersymmetric model close to the R-symmetry limit and naturalness in h → aa decays for ma < 2mb [J].

Dermisek, Radovan ;

Gunion, John F. .

PHYSICAL REVIEW D, 2007, 75 (07)

[38] A SIMPLE SOLUTION TO THE STRONG CP PROBLEM WITH A HARMLESS AXION [J].

DINE, M ;

FISCHLER, W ;

SREDNICKI, M .

PHYSICS LETTERS B, 1981, 104 (03) :199-202

[39]

DOBRESCU BA, 2008, JHEP, V9

[40]

Dobrescu Bogdan A., 2001, Phys. Rev, VD63, P015004

← 1 2 3 4 5 6 7 8 →