Minimal left-right symmetric intersecting D-brane model

We investigate left-right symmetric extensions of the standard model based on open strings ending on D-branes, with gauge bosons due to strings attached to stacks of D-branes and chiral matter due to strings stretching between intersecting D-branes. The left-handed and right-handed fermions transform as doublets under Sp(1)(L) and Sp(1)(R), and so their masses must be generated by the introduction of Higgs fields in a bifundamental (2,2) representation under the two Sp(1) gauge groups. For such D-brane configurations the left-right symmetry must be broken by Higgs fields in the doublet representation of Sp(1)(R) and therefore Majorana mass terms are suppressed by some higher physics scale. The left-handed and right-handed neutrinos pair up to form Dirac fermions which control the decay widths of the right-handed W' boson to yield comparable branching fractions into dilepton and dijet channels. Using the most recent searches at LHC13 Run II with 2016 data we constrain the (g(R), m(W)')parameter space. Our analysis indicates that independent of the coupling strength g(R), gauge bosons with masses m(W)' greater than or similar to 3.5 TeV are not ruled out. As the LHC is just beginning to probe the TeV scale, significant room for W' discovery remains.

[1]  V. M. Ghete,et al.  Search for W' decaying to tau lepton and neutrino in proton-proton collisions at $s) =$ 8 TeV , 2016 .

[2]  L. Anchordoqui,et al.  Update on 750 GeV diphotons from closed string states , 2016, 1603.08294.

[3]  L. Anchordoqui,et al.  750 GeV diphotons from closed string states , 2015, 1512.08502.

[4]  S. M. Etesami,et al.  Search for Narrow Resonances Decaying to Dijets in Proton-Proton Collisions at √[s]=13  TeV. , 2015, Physical review letters.

[5]  J. A. Aguilar-Saavedra,et al.  Multiboson production in W′ decays , 2015, 1512.00396.

[6]  R. Blumenhagen.  Intersecting branes, SUSY breaking and the 2 TeV excess at the LHC , 2015, 1512.03154.

[7]  P. Fox,et al.  Signals of a 2 TeV W′ boson and a heavier Z′ boson , 2015, 1511.02148.

[8]  M. Hartz,et al.  Search for Nucleon and Dinucleon Decays with an Invisible Particle and a Charged Lepton in the Final State at the Super-Kamiokande Experiment. , 2015, Physical review letters.

[9]  R. Mohapatra,et al.  Unified Explanation of the eejj, Diboson, and Dijet Resonances at the LHC. , 2015, Physical review letters.

[10]  L. Anchordoqui,et al.  Stringy origin of diboson and dijet excesses at the LHC , 2015, 1507.05299.

[11]  J. Brehmer,et al.  Symmetry restored in dibosons at the LHC? , 2015, 1507.00013.

[12]  B. Dobrescu,et al.  W' Boson near 2 TeV: Predictions for Run 2 of the LHC. , 2015, Physical review letters.

[13]  J. Hisano,et al.  Interpretations of the ATLAS diboson resonances , 2015, 1506.03931.

[14]  Andrea Benaglia,et al.  Search for physics beyond the standard model in final states with a lepton and missing transverse energy in proton-proton collisions at √s=8 TeV , 2015 .

[15]  Scoap.  Search for W′→tb→qqbb decays in pp collisions at s = 8 TeV with the ATLAS detector , 2015 .

[16]  John M. Campbell,et al.  A multi-threaded version of MCFM , 2015, The European Physical Journal C.

[17]  J. T. Childers,et al.  Search for W′→tb¯ in the lepton plus jets final state in proton-proton collisions at a centre-of-mass energy of √s=8 TeV with the ATLAS detector , 2014 .

[18]  S. Kim,et al.  Search for Nucleon Decay via n → ν ¯ π 0 and p → ν ¯ π + in Super-Kamiokande , 2014 .

[19]  W. Dekens,et al.  Viability of minimal left-right models with discrete symmetries , 2014, 1409.4052.

[20]  L. Anchordoqui,et al.  String Resonances at Hadron Colliders , 2014, 1407.8120.

[21]  C. Collaboration,et al.  Search for new resonances decaying via WZ to leptons in proton–proton collisions at √s = 8 TeV , 2014, 1407.3476.

[22]  T. Tuuva,et al.  Search for massive resonances decaying into pairs of boosted bosons in semi-leptonic final states at s$$ \sqrt{s} $$ = 8 TeV , 2014, 1405.3447.

[23]  R. Frederix,et al.  The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations , 2014, 1405.0301.

[24]  Khachatryan,et al.  Search for W′ → tb decays in the lepton + jets final state in pp collisions at $ \sqrt{s} $ = 8 TeV , 2014, 1402.2176.

[25]  J. Romão,et al.  LHC-scale left-right symmetry and unification , 2013, 1311.3228.

[26]  Claude Duhr,et al.  FeynRules 2.0 - A complete toolbox for tree-level phenomenology , 2013, Comput. Phys. Commun..

[27]  Bruce Yabsley,et al.  Search for resonant diboson production in the WW/WZ → ℓνjj decay channels with the ATLAS detector at √s = 7 TeV , 2013 .

[28]  Marco Rossini,et al.  Search for narrow resonances using the dijet mass spectrum in pp collisions at √s=8 TeV , 2013 .

[29]  L. Anchordoqui,et al.  Right-Handed Neutrinos as the Dark Radiation: Status and Forecasts for the LHC , 2012, 1211.0186.

[30]  L. Anchordoqui,et al.  Vacuum stability of Standard Model++ , 2012, 1208.2821.

[31]  V. M. Ghete,et al.  Search for a W′ boson decaying to a bottom quark and a top quark in pp collisions at √s = 7 TeV , 2012 .

[32]  V. M. Ghete,et al.  Search for a W′ or Techni-ρ Decaying into WZ in pp Collisions at √s=7 TeV , 2012 .

[33]  Z. Sullivan,et al.  Model independent reach for W-prime bosons at the LHC , 2012, 1208.4858.

[34]  L. Anchordoqui,et al.  LHC Phenomenology and Cosmology of String-Inspired Intersecting D-Brane Models , 2012, 1206.2537.

[35]  Z. Li,et al.  Discovery and Identification of W' and Z' in SU(2) x SU(2) x U(1) Models at the LHC , 2012, 1205.3769.

[36]  L. Anchordoqui,et al.  Neutrino cosmology after WMAP 7-year data and LHC first Z' bounds. , 2012, Physical review letters.

[37]  L. Anchordoqui,et al.  Z ' -gauge bosons as harbingers of low-mass strings , 2011, 1107.4309.

[38]  ATLAS search for a heavy gauge boson decaying to a charged lepton and a neutrino in pp collisions at √ s = 7 TeV , 2012 .

[39]  P. Langacker,et al.  Implications of string constraints for exotic matter and Z′ s beyond the standard model , 2011, 1108.5187.

[40]  V. M. Ghete,et al.  Search for a W ' boson decaying to a muon and a neutrino in pp collisions at √s =7 TeV , 2011 .

[41]  L. Anchordoqui,et al.  Stringy origin of Tevatron Wjj anomaly , 2011, 1104.2302.

[42]  D. Puigh.  Search for a heavy gauge boson $W$ ' in the final state with an electron and large missing transverse energy in $pp$ collisions at $\sqrt{s}=7$ TeV , 2011 .

[43]  G. Senjanovic,et al.  Left-Right Symmetry at LHC , 2010, 1005.5160.

[44]  D. Hooper,et al.  Neutralino dark matter annihilation to monoenergetic gamma rays as a signal of low mass superstrings , 2009, 0912.0517.

[45]  S. Kim,et al.  Search for nucleon decay into charged antilepton plus meson in Super-Kamiokande I and II , 2012, 1203.4030.

[46]  L. Anchordoqui,et al.  STRING PHENOMENOLOGY AT THE LHC , 2009, 0909.2216.

[47]  L. Anchordoqui,et al.  LHC Phenomenology for String Hunters , 2009, 0904.3547.

[48]  D. Lust,et al.  The LHC string Hunter's companion , 2008, 0807.3333.

[49]  L. Anchordoqui,et al.  Decay widths of lowest massive Regge excitations of open strings , 2008, 0806.3420.

[50]  L. Anchordoqui,et al.  Direct photons as probes of low mass strings at the CERN LHC , 2008, 0804.2013.

[51]  Beijing,et al.  General CP violation in minimal left–right symmetric model and constraints on the right-handed scale , 2007, 0712.4218.

[52]  D. Berenstein,et al.  Minimal quiver standard model , 2006, hep-th/0610104.

[53]  L. Ibáñez,et al.  Neutrino Majorana masses from string theory instanton effects , 2006, hep-th/0609213.

[54]  T. Weigand,et al.  Spacetime instanton corrections in 4D string vacua: The Seesaw mechanism for D-Brane models , 2006, hep-th/0609191.

[55]  R. Blumenhagen,et al.  Four-dimensional string compactifications with D-branes, orientifolds and fluxes , 2006, hep-th/0610327.

[56]  E. Kiritsis,et al.  Orientifolds, hypercharge embeddings and the Standard Model , 2006, hep-th/0605226.

[57]  P. Langacker,et al.  TOWARD REALISTIC INTERSECTING D-BRANE MODELS , 2005, hep-th/0502005.

[58]  S. Dimopoulos,et al.  Splitting Supersymmetry in String Theory , 2004, hep-th/0411032.

[59]  R. Blumenhagen,et al.  Gauge unification in supersymmetric intersecting brane worlds , 2003, hep-th/0305146.

[60]  J. Rizos,et al.  D-branes and the Standard Model , 2002, hep-th/0210263.

[61]  J. Kolb,et al.  UbiquitousCPviolation in a top-inspired left-right model , 2002, hep-ph/0205082.

[62]  J. Huston,et al.  New generation of parton distributions with uncertainties from global QCD analysis , 2002, hep-ph/0201195.

[63]  G. Shiu,et al.  Chiral Four-Dimensional N=1 Supersymmetric Type IIA Orientifolds from Intersecting D6-Branes , 2001, hep-th/0107166.

[64]  G. Shiu,et al.  Three-family supersymmetric standardlike models from intersecting brane worlds. , 2001, Physical review letters.

[65]  R. Blumenhagen,et al.  The Standard Model from stable intersecting brane world orbifolds , 2001, hep-th/0107138.

[66]  L. Ibáñez,et al.  Getting just the standard model at intersecting branes , 2001, hep-th/0105155.

[67]  G. Aldazabal,et al.  D=4 chiral string compactifications from intersecting branes , 2000, hep-th/0011073.

[68]  G. Aldazabal,et al.  Intersecting brane worlds , 2000, hep-ph/0011132.

[69]  E. Dudas,et al.  Type-I strings on magnetised orbifolds and brane transmutation , 2000, hep-th/0007090.

[70]  R. Blumenhagen,et al.  Noncommutative compactifications of type I strings on tori with magnetic background flux , 2000, hep-th/0007024.

[71]  E. Kiritsis,et al.  A D-brane alternative to unification , 2000, hep-ph/0004214.

[72]  L. Ibáñez,et al.  Anomalous U(1)'s and Proton Stability in Brane Models , 1999, hep-ph/9908305.

[73]  S. Dimopoulos,et al.  New dimensions at a millimeter to a Fermi and superstrings at a TeV , 1998, hep-ph/9804398.

[74]  J. Polchinski,et al.  Dirichlet Branes and Ramond-Ramond charges. , 1995, Physical review letters.

[75]  M. Bianchi,et al.  On the systematics of open string theories , 1990 .

[76]  A. Sagnotti.  Open strings and their symmetry groups , 2002, hep-th/0208020.

[77]  N. Warner,et al.  Anomaly cancelling terms from the elliptic genus , 1988 .

[78]  M. Dine.  Nonperturbative Effects on the String World Sheet (Ii) , 1988 .

[79]  E. Witten,et al.  Nonperturbative Effects on the String World Sheet , 1987 .

[80]  E. Witten.  Some properties of O(32) superstrings , 1984 .

[81]  John H. Schwarz,et al.  Anomaly cancellations in supersymmetric D=10 gauge theory and superstring theory , 1984 .

[82]  T. Rizzo,et al.  Grand unification and parity restoration at low energies. Phenomenology , 1981 .

[83]  T. Rizzo,et al.  Can There Be Low Intermediate Mass Scales in Grand Unified Theories , 1981 .

[84]  L. Ibáñez,et al.  Higgs bosons in SO(10) and partial unification , 1981 .

[85]  S. Weinberg.  Varieties of Baryon and Lepton Nonconservation , 1980 .

[86]  G. Senjanovic.  Spontaneous Breakdown of Parity in a Class of Gauge Theories , 1979 .

[87]  G. Senjanovic,et al.  Exact Left-Right Symmetry and Spontaneous Violation of Parity , 1975 .

[88]  R. Mohapatra,et al.  Left-Right Gauge Symmetry and an Isoconjugate Model of CP Violation , 1975 .

[89]  A. Salam,et al.  Lepton Number as the Fourth Color , 1974 .