Title: Gravity localization on hybrid branes

Journal Article · · Physics Letters. B
 [1];  [2];  [1]; ORCiD logo [1]
  1. Universidade Federal do Ceará (UFC), Fortaleza, Ceará (Brazil). Departamento de Física
  2. Instituto Federal de Educação, Ciência e Tecnologia do Ceará (IFCE), Juazeiro do Norte, Ceará (Brazil)

The NA60 experiment studied low-mass muon pair production in proton–nucleus (p–A) collisions using a 400 GeV proton beam at the CERN SPS. The low-mass dimuon spectrum is well described by the superposition of the two-body and Dalitz decays of the light neutral mesons η, ρ, ω, η' and φ, and no evidence of in-medium effects is found. A new high-precision measurement of the electromagnetic transition form factors of the η and ω was performed, profiting from a 10 times larger data sample than the peripheral In–In sample previously collected by NA60. Using the pole-parameterisation |F(M)|2=(1 - M22)-2 we find Λ-2η = 1.934 ± 0.067 (stat.) ±0.050(syst.) (GeV/c2)-2 and Λ-2ω = 2.223 ± 0.026(stat.) ± 0.037(syst.) (GeV/c2)-2. An improved value of the branching ratio of the Dalitz decay ω → μ+μ-π0 is also obtained, with BR(ω → μ+μ-π0) = [1.41 ± 0.09(stat.) ± 0.15(syst.)] ×10-4. Finally, further results refer to the ρ line shape and a new limit on ρ/ω interference in hadron interactions.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Organization:
NA60 Collaboration
Grant/Contract Number:
SC0012704
OSTI ID:
1354708
Report Number(s):
BNL-113815-2017-JA; BNL-113815-2017-JAAM; KA2501032
Journal Information:
Physics Letters. B, Journal Name: Physics Letters. B Vol. 754; ISSN 0370-2693
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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Kinks and branes in models with hyperbolic interactions text January 2017
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