منابع مشابه
Q-Anomaly at HERA and Supersymmetry
We discuss the recently observed excess of high Q2 neutral current deep inelastic scattering events at HERA in the light of supersymmetry with broken R-parity. We find more than one possible solution. We consider the possibilities for testing these hypotheses at HERA, the TEVATRON and at LEP. One lepton-number violating operator can account for both the HERA data and the four-jet anomaly seen b...
متن کاملJets in High-q2 Dis at Hera
The shapes of jets with transverse energies, E jet T , up to 45 GeV produced in neutral-current(NC) and charged-current (CC) deep inelastic e + p scattering (DIS) at Q 2 > 100 GeV 2 have been measured with the ZEUS detector at HERA. Jets are identiied using a cone algorithm in the ? ' plane with a cone radius of one unit. The jets become narrower as E jet T increases. The jet shapes in NC and C...
متن کاملSearches for Supersymmetry at Hera
Supersymmetric signals were searched for in e + p collisions collected by H1 and ZEUS in 1994 ! 1997 corresponding to an integrated luminosity of about 40 pb ?1 per experiment at a center-of-mass energy of 300 GeV. Within the framework of minimal supersym-metric extensions to the Standard Model which conserve R-parity, ZEUS found no evidence for the production of selectron and squark decaying d...
متن کاملSignals for Supersymmetry at Hera
We summarize two sets of signals at HERA in supersymmetric models with explicitly broken R-parity. (1) The resonant production of single squarks through an operator L1QiD̄j . (2) The MSSM production of a squark and a slepton followed by R-parity violating decays via the operators LiQjD̄k. The first case allows for a very large mass reach: mq̃ ≤ 275GeV for moderate couplings. For masses ∼ 100GeV co...
متن کاملMeasurement of Dijet Production at Low Q2 at HERA
The measurement of triple differential dijet cross sections in e±p interactions in the H1 experiment in the region of photon virtualities 2 < Q < 80GeV, inelasticities 0.1 < y < 0.85, jet transverse energies E∗ T 1 > 7GeV, E ∗ T 2 > 5GeV, and pseudorapidities −2.5 < η∗ 1 , η∗ 2 < 0 is presented. The analysis was done in the γ∗p centre-of-mass frame using an integrated luminosity of 57.6 pb−1. T...
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ژورنال
عنوان ژورنال: Nuclear Physics B
سال: 1997
ISSN: 0550-3213
DOI: 10.1016/s0550-3213(97)00401-x