ar X iv : 0 90 7 . 07 34 v 1 [ he p - ex ] 4 J ul 2 00 9 On resonance parameter measurement and luminosity determination at e + e − collider ∗
نویسندگان
چکیده
Expounded are the parameter measurement for narrow resonance and determination of corresponding luminosity at e + e − collider. The detailed theoretical formulas are compiled and the crucial experimental effects on observed cross section are taken into account. For luminosity determination, the iteration method is put forth which is mainly used to separate the interference effect between resonance and non-resonance decays.
منابع مشابه
ar X iv : h ep - e x / 02 07 01 3 v 1 3 J ul 2 00 2 LHC Based ep Colliders : e - linac versus e - ring
Luminosity estimation for Linac∗LHC based ep collider is evaluated and compared to the suggested ”LEP”∗LHC type collider.
متن کاملar X iv : 0 80 7 . 01 48 v 1 [ he p - ex ] 1 J ul 2 00 8 Measurement of CP asymmetry in Cabibbo suppressed D 0 decays Belle Collaboration
We measure the CP -violating asymmetries in decays to the D → KK and D → ππ CP eigenstates using 540 fb of data collected with the Belle detector at or near the Υ(4S) resonance. Cabibbo-favored D → Kπ decays are used to correct for systematic detector effects. The results, A CP = (−0.43 ± 0.30 ± 0.11)% and A ππ CP = (+0.43± 0.52 ± 0.12)%, are consistent with no CP violation.
متن کاملar X iv : 0 90 9 . 13 04 v 1 [ he p - ex ] 7 S ep 2 00 9 Radiative K ± Decays from NA 48 / 2 Rainer Wanke
New results on radiative K± decays from the NA48/2 experiment are presented. In the channel K± → π±π0γ more than 1 million decays were reconstructed, leading to the first measurement of the interference between direct photon emission and inner bremsstrahlung and stringent limits on CP violation in this decay. For K → πγγ , a precise measurement of the branching fraction was performed, based on ...
متن کاملar X iv : 0 71 0 . 36 17 v 1 [ he p - ex ] 1 9 O ct 2 00 7 Top physics at the Tevatron collider
The top quark has been discovered in 1995 at the CDF [1] and DØ [2] experiments located in the Tevatron ring at the Fermilab laboratory. After more than a decade the Tevatron collider, with its center-of-mass energy collisions of 1.96TeV, is still the only machine capable of producing such exceptionally heavy particle. Here I present a selection of the most recent CDF and DØ measurements perfor...
متن کاملar X iv : 0 90 4 . 03 93 v 1 [ he p - ex ] 2 A pr 2 00 9 Production of jets accompanied by W and Z bosons at LHC startup
We report on potential for measurement of W and Z boson production accompanied by jets. Of particular interest are jet multiplicity and PT distributions. The 10 to 100 pb−1 datasets expected in the startup year of operation of LHC are likely to already provide information beyond the reach of the Tevatron collider both in jet multiplicity and PT range. We are especially interested in understandi...
متن کامل