Abulencia, A;
Adelman, J;
Affolder, T;
Akimoto, T;
Albrow, MG;
Amerio, S;
Amidei, D;
... CDF Collaboration, The; + view all
(2007)
Search for heavy long-lived particles that decay to photons at CDF II.
Physical Review Letters
, 99
(12)
, Article 121801. 10.1103/PhysRevLett.99.121801.
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Abstract
We present the first search for heavy, long-lived particles that decay to photons at a hadron collider. We use a sample of gamma+jet+missing transverse energy events in p (p) over bar collisions at root s=1.96 TeV taken with the CDF II detector. Candidate events are selected based on the arrival time of the photon at the detector. Using an integrated luminosity of 570 pb(-1) of collision data, we observe 2 events, consistent with the background estimate of 1.3 +/- 0.7 events. While our search strategy does not rely on model-specific dynamics, we set cross section limits in a supersymmetric model with (chi) over tilde (0)(1)->gamma(G) over tilde and place the world-best 95% C.L. lower limit on the (chi) over tilde (0)(1) mass of 101 GeV/c(2) at tau(0)((chi) over tilde1)=5 ns.
| Type: | Article |
|---|---|
| Title: | Search for heavy long-lived particles that decay to photons at CDF II |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.99.121801 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.99.121801 |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | E(+)E(-) COLLISIONS, COLLIDERS, PHYSICS, EVENTS, ENERGY, MASS |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/131676 |
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