Search for heavy, long-lived neutralinos that decay to photons at CDF II using photon timing

被引：20

作者：

Aaltonen, T. ^{[1
,25
]}

Adelman, J. ^{[15
]}

Akimoto, T. ^{[59
]}

Albrow, M. G. ^{[19
]}

Gonzalez, B. Alvarez ^{[13
]}

Amerio, S. ^{[46
]}

Amidei, D. ^{[37
]}

Anastassov, A. ^{[29
,41
]}

Annovi, A. ^{[21
]}

Antos, J. ^{[16
]}

Apollinari, G. ^{[19
]}

Apresyan, A. ^{[52
]}

Arisawa, T. ^{[61
]}

Artikov, A. ^{[17
]}

Ashmanskas, W. ^{[19
]}

Attal, A. ^{[5
]}

Aurisano, A. ^{[57
]}

Azfar, F. ^{[45
]}

Azzurri, P. ^{[49
,50
]}

Badgett, W. ^{[19
]}

Barbaro-Galtieri, A. ^{[30
]}

Barnes, V. E. ^{[52
]}

Barnett, B. A. ^{[27
]}

Bartsch, V. ^{[32
]}

Bauer, G. ^{[34
]}

Beauchemin, P. -H. ^{[35
,36
]}

Bedeschi, F. ^{[49
,50
]}

Bednar, P. ^{[16
]}

Beecher, D. ^{[32
]}

Behari, S. ^{[27
]}

Bellettini, G. ^{[49
,50
]}

Bellinger, J. ^{[63
]}

Benjamin, D. ^{[18
]}

Beretvas, A. ^{[19
]}

Beringer, J. ^{[30
]}

Bhatti, A. ^{[54
]}

Binkley, M. ^{[19
]}

Bisello, D. ^{[46
]}

Bizjak, I. ^{[32
]}

Blair, R. E. ^{[3
]}

Blocker, C. ^{[8
]}

Blumenfeld, B. ^{[27
]}

Bocci, A. ^{[18
]}

Bodek, A. ^{[53
]}

Boisvert, V. ^{[53
]}

Bolla, G. ^{[52
]}

Bortoletto, D. ^{[52
]}

Boudreau, J. ^{[51
]}

Boveia, A. ^{[12
]}

Brau, B. ^{[12
]}

机构：

[1] Univ Helsinki, Dept Phys, Div High Energy Phys, FIN-00014 Helsinki, Finland

[2] Acad Sinica, Inst Phys, Taipei 11529, Taiwan

[3] Argonne Natl Lab, Argonne, IL 60439 USA

[4] Univ Athens, GR-15771 Athens, Greece

[5] Univ Autonoma Barcelona, Inst Fis Altes Energies, E-08193 Barcelona, Spain

[6] Baylor Univ, Waco, TX 76798 USA

[7] Univ Bologna, Ist Nazl Fis Nucl Bologna, I-40127 Bologna, Italy

[8] Brandeis Univ, Waltham, MA 02254 USA

[9] Univ Calif Davis, Davis, CA 95616 USA

[10] Univ Calif Los Angeles, Los Angeles, CA 90024 USA

[11] Univ Calif San Diego, San Diego, CA 92093 USA

[12] Univ Calif Santa Barbara, Santa Barbara, CA 93106 USA

[13] Univ Cantabria, CSIC, Inst Fis Cantabria, E-39005 Santander, Spain

[14] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA

[15] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

[16] Comenius Univ, Bratislava 84248, Slovakia

[17] Joint Inst Nucl Res, RU-141980 Dubna, Russia

[18] Duke Univ, Durham, NC 27708 USA

[19] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA

[20] Univ Florida, Gainesville, FL 32611 USA

[21] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

[22] Univ Geneva, CH-1211 Geneva 4, Switzerland

[23] Univ Glasgow, Glasgow G12 8QQ, Lanark, Scotland

[24] Harvard Univ, Cambridge, MA 02138 USA

[25] Helsinki Inst Phys, FIN-00014 Helsinki, Finland

[26] Univ Illinois, Urbana, IL 61801 USA

[27] Johns Hopkins Univ, Baltimore, MD 21218 USA

[28] Univ Karlsruhe, Inst Expt Kernphys, D-76128 Karlsruhe, Germany

[29] Kyungpook Natl Univ, Ctr High Energy Phys, Taegu 702701, South Korea

[30] Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[31] Univ Liverpool, Liverpool L69 7ZE, Merseyside, England

[32] UCL, London WC1E 6BT, England

[33] CIEMAT, E-28040 Madrid, Spain

[34] MIT, Cambridge, MA 02139 USA

[35] McGill Univ, Inst Particle Phys, Montreal, PQ H3A 2T8, Canada

[36] Univ Toronto, Toronto, ON M5S 1A7, Canada

[37] Univ Michigan, Ann Arbor, MI 48109 USA

[38] Michigan State Univ, E Lansing, MI 48824 USA

[39] Inst Theoret & Expt Phys, Moscow 117259, Russia

[40] Univ New Mexico, Albuquerque, NM 87131 USA

[41] Northwestern Univ, Evanston, IL 60208 USA

[42] Ohio State Univ, Columbus, OH 43210 USA

[43] Okayama Univ, Okayama 7008530, Japan

[44] Osaka City Univ, Osaka 588, Japan

[45] Univ Oxford, Oxford OX1 3RH, England

[46] Univ Padua, Ist Nazl Fis Nucl, Sez Padova Trento, I-35131 Padua, Italy

[47] Univ Paris 06, IN2P3 CNRS, LPNHE, UMR7585, F-75252 Paris, France

[48] Univ Penn, Philadelphia, PA 19104 USA

[49] Univ Pisa, Univ Siena, Ist Nazl Fis Nucl, I-56127 Pisa, Italy

[50] Scuola Normale Super Pisa, I-56127 Pisa, Italy

来源：

PHYSICAL REVIEW D | 2008年 / 78卷 / 03期

基金：

英国科学技术设施理事会;

关键词：

D O I：

10.1103/PhysRevD.78.032015

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the results of the first hadron collider search for heavy, long-lived neutralinos that decay via chi(0)(1)->gamma G in gauge-mediated supersymmetry breaking models. Using an integrated luminosity of 570 +/- 34 pb(-1) of p (p) over bar collisions at root s=1.96 TeV, we select gamma+jet+missing transverse energy candidate events based on the arrival time of a high-energy photon at the electromagnetic calorimeter as measured with a timing system that was recently installed on the CDF II detector. We find 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 and place the world-best 95% C.L. lower limit on the chi(0)(1) mass of 101 GeV/c(2) at tau(0)(chi 1)=5 ns.

引用

页数：29

共 44 条

[1] First run II measurement of the W boson mass at the Fermilab Tevatron [J].

Aaltonen, T. ;

Abulencia, A. ;

Adelman, J. ;

Akimoto, T. ;

Albrow, M. G. ;

Gonzalez, B. Alvarez ;

Amerio, S. ;

Amidei, D. ;

Anastassov, A. ;

Annovi, A. ;

Antos, J. ;

Apollinari, G. ;

Apresyan, A. ;

Arisawa, T. ;

Artikov, A. ;

Ashmanskas, W. ;

Attal, A. ;

Aurisano, A. ;

Azfar, F. ;

Azzi-Bacchetta, P. ;

Azzurri, P. ;

Bacchetta, N. ;

Badgett, W. ;

Barbaro-Galtieri, A. ;

Barnes, V. E. ;

Barnett, B. A. ;

Baroiant, S. ;

Bartsch, V. ;

Bauer, G. ;

Beauchemin, P. -H. ;

Bedeschi, F. ;

Bednar, P. ;

Behari, S. ;

Bellettini, G. ;

Bellinger, J. ;

Belloni, A. ;

Benjamin, D. ;

Beretvas, A. ;

Beringer, J. ;

Berry, T. ;

Bhatti, A. ;

Binkley, M. ;

Bisello, D. ;

Bizjak, I. ;

Blair, R. E. ;

Blocker, C. ;

Blumenfeld, B. ;

Bocci, A. ;

Bodek, A. ;

Boisvert, V. .

PHYSICAL REVIEW D, 2008, 77 (11)

[2] Search for supersymmetry in di-photon final states at √s=1.96 TeV [J].

Abazov, V. M. ;

Abbott, B. ;

Abolins, M. ;

Acharya, B. S. ;

Adams, M. ;

Adams, T. ;

Aguilo, E. ;

Ahn, S. H. ;

Ahsan, M. ;

Alexeev, G. D. ;

Alkhazov, G. ;

Alton, A. ;

Alverson, G. ;

Alves, G. A. ;

Anastasoaie, M. ;

Ancu, L. S. ;

Andeen, T. ;

Anderson, S. ;

Andrieu, B. ;

Anzelc, M. S. ;

Arnoud, Y. ;

Arov, M. ;

Arthaud, M. ;

Askew, A. ;

Asman, B. ;

Jesus, A. C. S. Assis ;

Atramentov, O. ;

Autermannu, C. ;

Avila, C. ;

Ay, C. ;

Badaud, F. ;

Baden, A. ;

Bagby, L. ;

Baldin, B. ;

Bandurin, D. V. ;

Banerjee, S. ;

Banerjee, P. ;

Barberis, E. ;

Barfuss, A. -F. ;

Bargassa, P. ;

Baringer, P. ;

Barreto, J. ;

Bartlett, J. F. ;

Bassler, U. ;

Bauer, D. ;

Beale, S. ;

Bean, A. ;

Begalli, M. ;

Begel, M. ;

Belanger-Champagne, C. .

PHYSICS LETTERS B, 2008, 659 (05) :856-863

[3]

ABBIENDI G, 2006, P SCI HEP2005, P346

[4]

Abdallah J, 2005, EUR PHYS J C, V38, P395, DOI 10.1140/epjc/s2004-02051-8

[5]

ABDULENCIA A, 2007, PHYS REV LETT, V99, P1801

[6]

Abe F, 1999, PHYS REV D, V59, DOI [10.1103/PhysRevD.59.092002, 10.1103/PhysRevD.59.052002]

[7] Searches for new physics in diphoton events in p(p)over-bar collisions at √s=1.8 TeV [J].

Abe, F ;

Akimoto, H ;

Akopian, A ;

Albrow, MG ;

Amadon, A ;

Amendolia, SR ;

Amidei, D ;

Antos, J ;

Aota, S ;

Apollinari, G ;

Arisawa, T ;

Asakawa, T ;

Ashmanskas, W ;

Atac, M ;

Azzi-Bacchetta, P ;

Bacchetta, N ;

Bagdasarov, S ;

Bailey, MW ;

de Barbaro, P ;

Barbaro-Galtieri, A ;

Barnes, VE ;

Barnett, BA ;

Barone, M ;

Bauer, G ;

Baumann, T ;

Bedeschi, F ;

Behrends, S ;

Belforte, S ;

Bellettini, G ;

Bellinger, J ;

Benjamin, D ;

Bensinger, J ;

Beretvas, A ;

Berge, JP ;

Berryhill, J ;

Bertolucci, S ;

Bettelli, S ;

Bevensee, B ;

Bhatti, A ;

Biery, K ;

Bigongiari, C ;

Binkley, M ;

Bisello, D ;

Blair, RE ;

Blocker, C ;

Blusk, S ;

Bodek, A ;

Bokhari, W ;

Bolla, G ;

Bonushkin, Y .

PHYSICAL REVIEW LETTERS, 1998, 81 (09) :1791-1796

[8] INCLUSIVE JET CROSS-SECTION IN PBARP COLLISIONS AT SQUARE-ROOT-S = 1.8 TEV [J].

ABE, F ;

AMIDEI, D ;

APOLLINARI, G ;

ATAC, M ;

AUCHINCLOSS, P ;

BADEN, AR ;

BACCHETTA, N ;

BAILEY, MW ;

BAMBERGER, A ;

DEBARBARO, P ;

BARNETT, BA ;

BARBAROGALTIERI, A ;

BARNES, VE ;

BAUMANN, T ;

BEDESCHI, F ;

BEHRENDS, S ;

BELFORTE, S ;

BELLETTINI, G ;

BELLINGER, J ;

BENJAMIN, D ;

BENSINGER, J ;

BERETVAS, A ;

BERGE, JP ;

BERTOLUCCI, S ;

BHADRA, S ;

BINKLEY, M ;

BISELLO, D ;

BLAIR, R ;

BLOCKER, C ;

BODEK, A ;

BOLOGNESI, V ;

BOOTH, AW ;

BOSWELL, C ;

BRANDENBURG, G ;

BROWN, D ;

BUCKLEYGEER, E ;

BUDD, HS ;

BUSETTO, G ;

BYONWAGNER, A ;

BYRUM, KL ;

CAMPAGNARI, C ;

CAMPBELL, M ;

CANER, A ;

CAREY, R ;

CARITHERS, W ;

CARLSMITH, D ;

CARROLL, JT ;

CASHMORE, R ;

CASTRO, A ;

CERVELLI, F .

PHYSICAL REVIEW LETTERS, 1992, 68 (08) :1104-1108

[9] Measurements of inclusive W and Z cross sections in p(p)over-bar collisions at √s=1.96 TeV [J].

Abulencia, A. ;

Acosta, D. ;

Adelman, J. ;

Affolder, T. ;

Akimoto, T. ;

Albrow, M. G. ;

Ambrose, D. ;

Amerio, S. ;

Amidei, D. ;

Anastassov, A. ;

Anikeev, K. ;

Annovi, A. ;

Antos, J. ;

Aoki, M. ;

Apollinari, G. ;

Arguin, J-F ;

Arisawa, T. ;

Artikov, A. ;

Ashmanskas, W. ;

Attal, A. ;

Azfar, F. ;

Azzi-Bacchetta, P. ;

Azzurri, P. ;

Bacchetta, N. ;

Bachacou, H. ;

Badgett, W. ;

Barbaro-Galtieri, A. ;

Barnes, V. E. ;

Barnett, B. A. ;

Baroiant, S. ;

Bartsch, V. ;

Bauer, G. ;

Bedeschi, F. ;

Behari, S. ;

Belforte, S. ;

Bellettini, G. ;

Bellinger, J. ;

Belloni, A. ;

Ben-Haim, E. ;

Benjamin, D. ;

Beretvas, A. ;

Beringer, J. ;

Berry, T. ;

Bhatti, A. ;

Binkley, M. ;

Bisello, D. ;

Bishai, M. ;

Blair, R. E. ;

Blocker, C. ;

Bloom, K. .

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, 2007, 34 (12) :2457-2544

[10] Search for anomalous production of diphoton events with missing transverse energy at CDF and limits on gauge-mediated supersymmetry-breaking models -: art. no. 031104 [J].

Acosta, D ;

Adelman, J ;

Affolder, T ;

Akimoto, T ;

Albrow, MG ;

Ambrose, D ;

Amerio, S ;

Amidei, D ;

Anastassov, A ;

Anikeev, K ;

Annovi, A ;

Antos, J ;

Aoki, M ;

Apollinari, G ;

Arisawa, T ;

Arguin, JF ;

Artikov, A ;

Ashmanskas, W ;

Attal, A ;

Azfar, F ;

Azzi-Bacchetta, P ;

Bacchetta, N ;

Bachacou, H ;

Badgett, W ;

Barbaro-Galtieri, A ;

Barker, GJ ;

Barnes, VE ;

Barnett, BA ;

Baroiant, S ;

Barone, M ;

Bauer, G ;

Bedeschi, F ;

Behari, S ;

Belforte, S ;

Bellettini, G ;

Bellinger, J ;

Ben-Haim, E ;

Benjamin, D ;

Beretvas, A ;

Bhatti, A ;

Binkley, M ;

Bisello, D ;

Bishai, M ;

Blair, RE ;

Blocker, C ;

Bloom, K ;

Blumenfeld, B ;

Bocci, A ;

Bodek, A ;

Bolla, G .

PHYSICAL REVIEW D, 2005, 71 (03) :031104-1

← 1 2 3 4 5 →