1994-2000 e^-/+p, (117 pb^-1) 
DESY 05-087, 
Submitted to Phys. Lett. B 06/05 
``Search for Leptoquark Bososns in ep Collisions at HERA"

1998-99 e^-p, (15.7 pb^-1) 
DESY 01-094, 
Phys. Lett. B523 (2001) 234, 07/01. 
``A Search for Leptoquark Bososns in e^-p Collisions at HERA"

1994-97 e⁺p, (35.6 pb^-1) 
DESY 00-027, 
Phys. Lett. B479 (2000) 358. 
``Search for Compositeness, Leptoquarks and Large Extra Large Dimensions in eq Contact Interaction at HERA "

1994-97 e⁺p, (37 pb^-1) 
DESY 99-081, 
Eur. Phys. J. C11 (1999) 447. 
``A Search for Leptoquark Bosons and Lepton Flavor Violation in Positron-Proton Collisions at HERA"

1994 e⁺p, (3 pb^-1) 
DESY 95-233, 
Phys. Lett. B369 (1996) 173. 
``A Search for Leptoquarks at HERA"

1994 e⁺p, (3 pb^-1) , 
1993-1994 e^-p, (0.9 pb^-1) 
DESY 95-079, 
Phys. Lett. B353 (1995) 578. 
`` Leptoquarks and Compositeness Scales from a Contact Interaction Analysis of Deep Inelastic e(+-)p Scattering at HERA"

1993 e^-p, (0.4 pb^-1) 
DESY 94-154, 
Z.Phys. C64 (1994) 545. 
``A Search for Leptoquarks and Squarks at HERA" 

1992 e^-p, (24 nb^-1) 
DESY 93-029, 
Nucl. Phys. B396 (1993) 3. 
`` Search for Lepto-Quarks, Lepto-Gluons and excited leptons at HERA"

1994-2000 e⁺p, (65 pb^-1) , 
ICHEP 2002 Abstract 1027, 
``A search for leptoquarks at HERA"

1994-2000 e⁺p, (65 pb^-1) , 
EPS 2001 Abstract 822 and LP 2001 Abstract 514, 
``A Search for Leptoquark Bosons in ep Collisions at HERA "

1998-1999 e^-p, (14.4 pb^-1) , 
EW 2000, Abstract 954, 
``A Search for Leptoquark Bosons in e^- p Collisions at HERA "

1998-1999 e^-p, (15.2 pb^-1) , 1994-97,99-00 e⁺p, (81.5 pb^-1) , 
ICHEP 2000, Abstract 951, 952, 
``Search for Compositeness, Leptoquarks and Large Extra Dimensions in e-q and e+q Contact Interactions at HERA "

1998-99 e^-p, (14.4 pb^-1) , 1994-97, e⁺p, (37 pb^-1) , 1999-00, e⁺p, (47.6 pb^-1) , 
ICHEP 2000, Abstract 953, 
``Search for Leptoquarks in ep collisions at HERA "

• mass spectra
• M-y Scatter plots:
• NC data , CC data
• LQ MC with M=200 GeV

(scalar NC, vector NC, vector CC)
• Limit Calculation
• Cross Section in M-y for scalar LQ (NC)
• Cross Section in M-y for vector LQ (NC)
• Cross Section in M-y for vector LQ (CC)
• S/B Ratio in M-y for scalar LQ (NC)
• S/B Ratio in M-y for vector LQ (NC)
• S/B Ratio in M-y for vector LQ (CC)
• Results BRW limits: 
• scalar S_0,L  (F=2) 
• scalar S~_1/2,L  (F=0) 
• F=0(e+p 94-97 at high masses)
• F=0 (CI 94-00 at high masses)

 
• scalar S_0,L  (F=2) H1/ZEUS (new L3)
• scalar S~1/2,L  (F=0) H1/ZEUS (new L3)
• Results generic model: limit on BR
• LQ Limits for lamda=0.1 and F=0:
• M(S_1/2,L) > 282 GeV 
• M(S_1/2,R ) > 283 GeV 
• M(S~_1/2,L) > 261 GeV
• M(V_0,L) > 259 GeV
• M(V_0,R) > 266 GeV
• M(V~_0,R) > 283 GeV
• M(V_1,L) > 288 GeV
• LQ Limits for lamda=0.1 and F=2:
• M(V_1/2,L) >  262 GeV 
• M(V_1/2,R ) >  278 GeV 
• M(V~_1/2,L) >  279 GeV
• M(S_0,L) >  269 GeV
• M(S_0,R) >   273 GeV
• M(S~_0,R) >  245 GeV
• M(S_1,L) >  273 GeV

• Comaprison HERA II and Tevatron
• BR( LQ -> eq ) as function of mass (hep-ph/0007282)

1998-1999 e^-p, (16.4 pb^-1) , 1994-97,99-00 e⁺p, (98.6 pb^-1) , 
DESY 03-052,
Phys Lett B ,   (2003)
``Search for new physics phenomena in ep contact interactions at HERA"

1994-1997 e⁺p, (35.6 pb^-1) , 
DESY 00-027, 
Phys. Lett. B479 (2000) 358. 
``Search for Compositeness, Leptoquarks and Large Extra Dimensions in eq Contact Interactions at HERA"

1994 e⁺p, (3 pb^-1) , 
1993-1994 e^-p, (0.9 pb^-1) 
DESY 95-079, 
Phys. Lett. B353 (1995) 578. 
`` Leptoquarks and Compositeness Scales from a Contact Interaction Analysis of Deep Inelastic e(+-)p Scattering at HERA"

1998-1999 e^-p, (16.4 pb^-1) , 1994-97,99-00 e⁺p, (98.6 pb^-1) , 
ICHEP 2002, Abstract 979, 
``Search for new physics phenomena in ep contact interactions at HERA"

1998-1999 e^-p, (15.2 pb^-1) , 1994-97,99-00 e⁺p, (81.5 pb^-1) , 
ICHEP 2000, Abstract 951, 952, 
``Search for Compositeness, Leptoquarks and Large Extra Dimensions in e-q and e+q Contact Interactions at HERA "

1994-1997 e⁺p, (37 pb^-1) , 
EPS'99, Abstract 157f, 
``A Search for Contact Interactions at HERA"

 
• see also here

 
• see also here

1998-1999 e^-p, (13.5 pb^-1) , 
1999-2000 e⁺p, (64.3 pb^-1) , 
DESY 04-084, 
submitted to Phys. Lett. B
``Search for Light Gravitinos in Events with Photons and Missing Transverse Momentum at HERA" 


1994-1997 e⁺p, (37.9 pb^-1) , 
1999-2000 e⁺p, (67.9 pb^-1) , 
DESY 04-084, 
submitted to Phys. Lett. B
``Search for bosonic stop decays in R-Parity Violating Supersymmetry in e⁺p collisions at HERA" 


1999-2000 e⁺p, (64.3 pb^-1) , 
1998-1999 e^-p, (13.5 pb^-1) , 
DESY 04-025, 
submitted to Eur. Phys. J. C
``Search for Squark production in R-Parity Violating Supersymmetry at HERA" 

1994-1997 e⁺p, (37 pb^-1) , 
DESY 01-021, 
Eur. Phys. J. C20(2001) 4, 639
``Searches at HERA for Squarks in R-Parity Violating Supersymmetry " 

1994-1995 e⁺p, (6.4 pb^-1) , 
DESY 96-082, 
Phys.Lett. B380 (1996) 461. 
``A Search for Selectrons and Squarks at HERA" 

1994 e⁺p, (3 pb^-1) , 
DESY 96-056, 
Z.Phys. C71 (1996) 211 . 
`` A Search of Squarks of Rp-Violating SUSY at HERA" 

1993 e^-p, (0.4 pb^-1) 
DESY 94-154, 
Z.Phys. C64 (1994) 545. 
``A Search for Leptoquarks and Squarks at HERA" 

1999/2000 e⁺p (65 pb^-1),
Aachen EPS'03, Abstract 676
``Search for Superlight Gravitinos at HERA " 

1999/2000 e⁺p, e^-p (63+14 pb^-1),
Aachen EPS'03, Abstract 101
``Searches for Squark Production in R-parity violating SUSY at HERA" 
 
 

1999/2000 e⁺p, (63 pb^-1) , 
Lake Louise 2003
``Searches for Squarks in R-parity violating SUSY" 

1994-1997 e⁺p, (37 pb^-1) , 
ICHEP 2000, Abstract 957
``A Search for Squarks of R-parity violating SUSY" 

1994-1997 e⁺p, (37 pb^-1) , 
ICHEP'98, Abstract 580
``A Search for Squarks of R-Parity Violating SUSY at HERA" 

RPV Squark Production all flavours (MSSM/MSUGRA)

• Fig 5f.: Stop Mass limit for tan(beta)=10
• Fig 6f.: Sbottom Mass limit for tan(beta)=10
• Fig 7.: Squark Mass limit vs tan beta
• see also here

neutralino/selectron Limit (preliminary)

neutralino/selectron Limit (incl. HERA II and OPAL)

neutralino/selectron Limit (incl. HERA II)

neutralino/selectron Limit (incl. OPAL)

see also here

Tables:

RPV Squark Production all flavours (MSSM/MSUGRA)

• see also here

1994-2000 e^+-p, (120 pb^-1) , 
DESY 02-096, 
submitted to Phys. Lett. B, 
``Search for Excited Electrons at HERA " 

1998/1999 e^-p, (15 pb^-1) , 
DESY 01-145, 
Phys. Lett. B525 (2002)9, 10/01 
``Search for Excited Neutrinos at HERA " 

1994-1997 e⁺p, (37 pb^-1) , 
DESY 00-102, 
Eur. Phys. J. C17 (2000) 567 
``A Search for Excited Fermions at HERA " 

1994 e⁺p, (2.7 pb^-1) , 
DESY 96-163, 
Nucl. Phys. B483 (1997) 44 
``Search for Excited Fermions with the H1 Detector" 

1993 e^-p, (0.5 pb^-1) , 
DESY 94-138, 
P.L. B340 (1994) 205. 
``A Search for Heavy Leptons at HERA" 

1992 e^-p, (24 nb^-1) 
DESY 93-029, 
Nucl. Phys. B396 (1993) 3. 
`` Search for Lepto-Quarks, Lepto-Gluons and excited leptons at HERA"

1998-1999 e^-p, (15 pb^-1) , 
EPS 2001, Abstract 823 and LP 2001, Abstract 515
``Search for Excited Neutrinos at HERA "

1998-1999 e^-p, (15 pb^-1) , 
DIS 2000, Abstract 956
``A Search for Excited Neutrinos in e^- p Collisions at HERA " 

1994-1997 e⁺p, (37 pb^-1) , 
ICHEP'98, Abstract 581
``A Search for Excited Fermions at HERA" 

94-00 analysis:

H1 results submited to journal

• Fig  f/Lambda limit plot and LEP ("no chiral couplings")
• Fig  f/Lambda limit plot and LEP ("new")

• Fig  e* f/Lambda limit plot and LEP ("no chiral couplings")
• Fig  nu* f/Lambda limit plot (f=-f') 
• Fig  nu* f/Lambda limit plot and LEP (f=f')

• summary table

1994-2000 e^+/-p, (118.3 pb^-1), 
DESY 03-132, 
Eur. Phys. J. C33 (2004) 9 
`` Search for Single Top Quark Production in ep Collisions at HERA"

 Isolated leptons & W production:

1994-2000 e⁺p, (104.7 pb^-1), 
1998/99 e^-p, (13.6 pb^-1) 
DESY 02-224, 
Phys. Lett. B (2003) 
``Isolated electrons and muons in events with missing transverse momentum at HERA"

1994-2000 e⁺p, (115.2 pb^-1) , 
DIS 2002, Abstract 1024
``Search for Single Top Production in e^+-p collisions at HERA " 

1994-2000 e⁺p, (115.2 pb^-1) , 
EPS 2001, Abstract 824 and LP 2001, Abstract 512
``Search for Single Top Production in e^+-p collisions at HERA " 

1994-1997 e⁺p, (36.5 pb^-1) , 
ICHEP 2000, Abstract 961
``Search for Single Top Production in ep collisions at HERA " 

 
Isolated leptons (e/mu):

NEW!!!
2003/2004 E+p, (45 pb-1)
ICHEP 2004, abstracts 12-0765,
H1prelim-04-163

 Tau leptons:

1996-2000 e^+/-p, (108 pb^-1) , 
DIS 2004
`` Search for events with tau leptons in ep collisions at HERA" 
 

 
Single Top Production: 

• Feynman diagram
• Selection of top -> bW -> b e nu , b mu nu 
• discriminating variables
• expected top mass resolution
• reconstructed mass of candidates
• Selection of top -> bW -> b jet jet
• control plots
• high Et plots
• discriminant variables
• final selection plot
• final kappa_gamma limit plot

Limits on anomalous couplings (HERA / LEP / Tevatron combined): 
 
• kappa_gamma vs v_Z

Single Top Production: 

• semileptonic top decay
• e+p selection table
• e- p selection table
• list of candidates

1994-2000 e^+-p, (114 pb^-1) ,
DESY 03-159, 
Phys. Lett. B583 (2004) 28 
`` Muon Pair Production in ep Collisions at HERA"

1994-2000 e^+-p, (115 pb^-1) , 
DESY 03-082, 
Eur Phys J C31 (2003) 17 
``Multi-Electron Production at High Transverse Momenta in ep Collisions at HERA " 

1994-2000 e^+/-p, (115.2 pb^-1) , 
ee,mumu channel
ICHEP 2002, Abstract 1020
``Search for doubly charged Higgs production at HERA" 

Multi-Leptons: 
 

NEW!!!
2003/2004 E+p, (45 pb-1`)
ICHEP 2004, abstract 12-0765,
H1prelim-04-163

1994-2000 e^+/-p, (115 pb^-1) , 
DIS 2002, Abstract 1019
``Multi-Electron Production at High Transverse Momentum in ep Collisions at HERA" 

1998-2000 e^+/-p, (70.9 pb^-1) , 
DIS 2002, Abstract 1021
``Muon Pair Production in ep Collisions at HERA" 

Note some are outdated!

• Fig. 1a final state Higgs radiation
• Fig. 1b initial state Higgs radiation
• Fig. 1c Higgs-Higgs-gamma coupling

• Fig. 2a multi-electron mass plot
• Fig. 2b di-muon mass plot

• Fig. 3 cross-section x BR 
• Fig. 4 hee limit for H->ee BR=33,100%
• Fig. 5 hee limit for H->ee, H->mumu, comb.

 
• H1 comparison with preliminary OPAL
• prospects HERA II with preliminary OPAL
• All in one (prospects, H1, OPAL)

1994-96 e⁺p, (14 pb^-1) 
DESY 97-024, 
Z. Phys. C74 (1997) 191. 
``Observation of Events at Very High Q² in ep Collisions at HERA"

2003/2004 e⁺p (45 pb^-1) 
ICHEP04, Abstract 12-765, 
H1prelim-04-163
``A General Search for New Phenomena in ep scattering at HERA "
 
1994-00 e<sup>+</sup>p and e<sup>-</sup>p (115pb<sup>-1</sup>)  EPS'03, Abstract 118, 
``A General Search for New Phenomena in ep scattering at HERA

1995-97 e⁺p, (60 pb^-1)
EPS'03, Abstract 106, 

``A Direct Search for Magnetic Monopoles at HERA "