Hidden GeV-scale interactions of quarks.

We explore quark interactions mediated by new gauge bosons of masses in the 0.3-50 GeV range. A tight upper limit on the gauge coupling of light Z(') bosons is imposed by the anomaly cancellation conditions in conjunction with collider bounds on new charged fermions. Limits from quarkonium decays are model dependent, while electroweak constraints are mild. We derive the limits for a Z(') boson coupled to baryon number and then construct a Z(') model with relaxed constraints, allowing quark couplings as large as 0.2 for a mass of a few GeV.

[1]  A. Pierce,et al.  Vectorlike leptons as the tip of the dark matter iceberg , 2014, 1403.1592.

[2]  D. Straub,et al.  Vector-like leptons: Higgs decays and collider phenomenology , 2013, 1312.5329.

[3]  B. Dobrescu,et al.  Coupling-mass mapping of dijet peak searches , 2013, 1306.2629.

[4]  M. Wise,et al.  Gauge theory for baryon and lepton numbers with leptoquarks. , 2013, Physical review letters.

[5]  C. Collaboration,et al.  Combined search for the quarks of a sequential fourth generation , 2012, 1209.1062.

[6]  A. Gouvea,et al.  Dark Matter From Weak Polyplets , 2012, 1207.0510.

[7]  G. Krnjaic.  Very light axigluons and the top asymmetry , 2011, 1109.0648.

[8]  D. Leith,et al.  Search for hadronic decays of a light Higgs boson in the radiative decay Υ→γA0. , 2011, Physical review letters.

[9]  L. Vecchi,et al.  A Dark Force for Baryons , 2011, 1107.2666.

[10]  F. Maltoni,et al.  MadGraph 5: going beyond , 2011, 1106.0522.

[11]  E. al.,et al.  First Search for Multijet Resonances in s=1.96TeV pp̄ Collisions , 2011, 1105.2815.

[12]  P. Fox,et al.  An effective Z , 2011, 1104.4127.

[13]  M. Pospelov,et al.  Exploring Portals to a Hidden Sector Through Fixed Targets , 2009, 0906.5614.

[14]  H. Czyz,et al.  Strong and electromagnetic J/ψ and ψ(2S) decays into pion and kaon pairs , 2009, 0904.0515.

[15]  J. A. Oller,et al.  The → + − decay within a chiral unitary approach , 2003 .

[16]  L3 Collaboration.  Search for Heavy Neutral and Charged Leptons in e+ e- Annihilation at LEP , 2001, hep-ex/0107015.

[17]  Atlas Collaboration,et al.  Search for charginos nearly mass degenerate with the lightest neutralino based on a disappearing-track signature in pp collisions at √(s) = 8 TeV with the ATLAS detector , 2013, 1310.3675.

[18]  C. Carone,et al.  Limits on a Light Leptophobic Gauge Boson , 1998, hep-ph/9809522.

[19]  Hayes,et al.  Review of Particle Physics. , 1996, Physical review. D, Particles and fields.

[20]  Murayama,et al.  Realistic models with a light U(1) gauge boson coupled to baryon number. , 1995, Physical review. D, Particles and fields.

[21]  S. Davidson,et al.  Is there a vector boson coupling to baryon number , 1994, hep-ph/9411355.

[22]  Murayama,et al.  Light U(1) gauge boson coupled to baryon number , 1995, hep-ph/9506460.

[23]  S. Dimopoulos,et al.  TeV dark matter , 1991 .

[24]  A. Nelson,et al.  CONSTRAINTS ON A NEW VECTOR BOSON COUPLED TO BARYONS , 1989 .

[25]  W. Bardeen.  Anomalous Ward identities in spinor field theories , 1969 .

[26]  The Opal Collaboration,et al.  Search for pair-produced leptoquarks in e$^+$e$^-$ interactions at $\sqrt{s} \simeq 183$ GeV , 2000 .

[27]  James D. Wells,et al.  Phenomenology of Massive Vectorlike Doublet Leptons , 1998 .

[28]  W. R. Frisken,et al.  An upper limit for two-jet production in directϒ(1S) decays , 1986 .