Search for radiative b-hadron decays in pp̄ collisions at √s=1.8 TeV

D. Acosta, T. Affolder, H. Akimoto, M. G. Albrow, D. Ambrose, D. Amidei, K. Anikeev, J. Antos, G. Apollinari, Tetsuo Arisawa, A. Artikov, T. Asakawa, W. Ashmanskas, F. Azfar, P. Azzi-Bacchetta, N. Bacchetta, H. Bachacou, W. Badgett, S. Bailey, P. De Barbara & 79 others A. Barbaro-Galtieri, V. E. Barnes, B. A. Barnett, S. Baroiant, M. Barone, G. Bauer, F. Bedeschi, S. Behari, S. Belforte, W. H. Bell, G. Bellettini, J. Bellinger, D. Benjamin, J. Bensinger, A. Beretvas, J. Berryhill, A. Bhatti, M. Binkley, D. Bisello, M. Bishai, R. E. Blair, C. Blocker, K. Bloom, B. Blumenfeld, S. R. Blusk, A. Bocci, A. Bodek, G. Bolla, Y. Bonushkin, D. Bortoletto, J. Boudreau, A. Brandi, C. Bromberg, M. Brozovic, E. Brubaker, N. Bruner, J. Budagov, H. S. Budd, K. Burkett, G. Busetto, K. L. Byrum, S. Cabrera, P. Calafiura, M. Campbell, W. Carithers, J. Carlson, D. Carlsmith, W. Caskey, A. Castro, D. Cauz, A. Cerri, A. W. Chan, P. S. Chang, P. T. Chang, J. Chapman, C. Chen, Y. C. Chen, M. T. Cheng, M. Chertok, G. Chiarelli, I. Chirikov-Zorin, G. Chlachidze, F. Chlebana, L. Christofek, M. L. Chu, J. Y. Chung, W. H. Chung, Y. S. Chung, C. I. Ciobanu, A. G. Clark, M. Coca, A. P. Colijn, A. Connolly, M. Convery, J. Conway, M. Cordelli, J. Cranshaw, R. Culbertson, D. Dagenhart

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We have performed a search for radiative b-hadron decays using events produced in pp̄ collisions at √s=1.8 TeV and collected by the Collider Detector at Fermilab. The decays we considered were B̄d 0 →K̄*0(→K -π+)γ, B̄s 0→φ (→K+K-)γ, Λb 0→Λ(→pπ-)γ, and their charge conjugates. Two independent methods to identify photons from such decays were employed. In the first method, the photon was detected in the electromagnetic calorimeter. In the second method, the photon was identified by an electron-positron pair produced through the external photon conversion before the tracking detector volume. By combining the two methods we obtain upper limits on the branching fractions for the B̄d 0, B̄s 0, and Λb 0 radiative decays which, at the 95% confidence level, are found to be B(B̄ d 0→K̄*0γ)<1. 4×10-4, B(B̄s 0→φγ) <1.6×10-4, and B(Λb 0→Λγ)<1.9×10-3.

Original languageEnglish
Article number112002
JournalPhysical Review D
Volume66
Issue number11
DOIs
Publication statusPublished - 2002

Fingerprint

Photon
Collision
Decay
collisions
photons
decay
Detector
Calorimeter
electron-positron pairs
detectors
Confidence Level
calorimeters
Branching
confidence
Charge
Electron
electromagnetism

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)
  • Nuclear and High Energy Physics
  • Mathematical Physics

Cite this

Acosta, D., Affolder, T., Akimoto, H., Albrow, M. G., Ambrose, D., Amidei, D., ... Dagenhart, D. (2002). Search for radiative b-hadron decays in pp̄ collisions at √s=1.8 TeV. Physical Review D, 66(11), [112002]. https://doi.org/10.1103/PhysRevD.66.112002

Search for radiative b-hadron decays in pp̄ collisions at √s=1.8 TeV. / Acosta, D.; Affolder, T.; Akimoto, H.; Albrow, M. G.; Ambrose, D.; Amidei, D.; Anikeev, K.; Antos, J.; Apollinari, G.; Arisawa, Tetsuo; Artikov, A.; Asakawa, T.; Ashmanskas, W.; Azfar, F.; Azzi-Bacchetta, P.; Bacchetta, N.; Bachacou, H.; Badgett, W.; Bailey, S.; De Barbara, P.; Barbaro-Galtieri, A.; Barnes, V. E.; Barnett, B. A.; Baroiant, S.; Barone, M.; Bauer, G.; Bedeschi, F.; Behari, S.; Belforte, S.; Bell, W. H.; Bellettini, G.; Bellinger, J.; Benjamin, D.; Bensinger, J.; Beretvas, A.; Berryhill, J.; Bhatti, A.; Binkley, M.; Bisello, D.; Bishai, M.; Blair, R. E.; Blocker, C.; Bloom, K.; Blumenfeld, B.; Blusk, S. R.; Bocci, A.; Bodek, A.; Bolla, G.; Bonushkin, Y.; Bortoletto, D.; Boudreau, J.; Brandi, A.; Bromberg, C.; Brozovic, M.; Brubaker, E.; Bruner, N.; Budagov, J.; Budd, H. S.; Burkett, K.; Busetto, G.; Byrum, K. L.; Cabrera, S.; Calafiura, P.; Campbell, M.; Carithers, W.; Carlson, J.; Carlsmith, D.; Caskey, W.; Castro, A.; Cauz, D.; Cerri, A.; Chan, A. W.; Chang, P. S.; Chang, P. T.; Chapman, J.; Chen, C.; Chen, Y. C.; Cheng, M. T.; Chertok, M.; Chiarelli, G.; Chirikov-Zorin, I.; Chlachidze, G.; Chlebana, F.; Christofek, L.; Chu, M. L.; Chung, J. Y.; Chung, W. H.; Chung, Y. S.; Ciobanu, C. I.; Clark, A. G.; Coca, M.; Colijn, A. P.; Connolly, A.; Convery, M.; Conway, J.; Cordelli, M.; Cranshaw, J.; Culbertson, R.; Dagenhart, D.

In: Physical Review D, Vol. 66, No. 11, 112002, 2002.

Research output: Contribution to journalArticle

Acosta, D, Affolder, T, Akimoto, H, Albrow, MG, Ambrose, D, Amidei, D, Anikeev, K, Antos, J, Apollinari, G, Arisawa, T, Artikov, A, Asakawa, T, Ashmanskas, W, Azfar, F, Azzi-Bacchetta, P, Bacchetta, N, Bachacou, H, Badgett, W, Bailey, S, De Barbara, P, Barbaro-Galtieri, A, Barnes, VE, Barnett, BA, Baroiant, S, Barone, M, Bauer, G, Bedeschi, F, Behari, S, Belforte, S, Bell, WH, Bellettini, G, Bellinger, J, Benjamin, D, Bensinger, J, Beretvas, A, Berryhill, J, Bhatti, A, Binkley, M, Bisello, D, Bishai, M, Blair, RE, Blocker, C, Bloom, K, Blumenfeld, B, Blusk, SR, Bocci, A, Bodek, A, Bolla, G, Bonushkin, Y, Bortoletto, D, Boudreau, J, Brandi, A, Bromberg, C, Brozovic, M, Brubaker, E, Bruner, N, Budagov, J, Budd, HS, Burkett, K, Busetto, G, Byrum, KL, Cabrera, S, Calafiura, P, Campbell, M, Carithers, W, Carlson, J, Carlsmith, D, Caskey, W, Castro, A, Cauz, D, Cerri, A, Chan, AW, Chang, PS, Chang, PT, Chapman, J, Chen, C, Chen, YC, Cheng, MT, Chertok, M, Chiarelli, G, Chirikov-Zorin, I, Chlachidze, G, Chlebana, F, Christofek, L, Chu, ML, Chung, JY, Chung, WH, Chung, YS, Ciobanu, CI, Clark, AG, Coca, M, Colijn, AP, Connolly, A, Convery, M, Conway, J, Cordelli, M, Cranshaw, J, Culbertson, R & Dagenhart, D 2002, 'Search for radiative b-hadron decays in pp̄ collisions at √s=1.8 TeV', Physical Review D, vol. 66, no. 11, 112002. https://doi.org/10.1103/PhysRevD.66.112002
Acosta D, Affolder T, Akimoto H, Albrow MG, Ambrose D, Amidei D et al. Search for radiative b-hadron decays in pp̄ collisions at √s=1.8 TeV. Physical Review D. 2002;66(11). 112002. https://doi.org/10.1103/PhysRevD.66.112002
Acosta, D. ; Affolder, T. ; Akimoto, H. ; Albrow, M. G. ; Ambrose, D. ; Amidei, D. ; Anikeev, K. ; Antos, J. ; Apollinari, G. ; Arisawa, Tetsuo ; Artikov, A. ; Asakawa, T. ; Ashmanskas, W. ; Azfar, F. ; Azzi-Bacchetta, P. ; Bacchetta, N. ; Bachacou, H. ; Badgett, W. ; Bailey, S. ; De Barbara, P. ; Barbaro-Galtieri, A. ; Barnes, V. E. ; Barnett, B. A. ; Baroiant, S. ; Barone, M. ; Bauer, G. ; Bedeschi, F. ; Behari, S. ; Belforte, S. ; Bell, W. H. ; Bellettini, G. ; Bellinger, J. ; Benjamin, D. ; Bensinger, J. ; Beretvas, A. ; Berryhill, J. ; Bhatti, A. ; Binkley, M. ; Bisello, D. ; Bishai, M. ; Blair, R. E. ; Blocker, C. ; Bloom, K. ; Blumenfeld, B. ; Blusk, S. R. ; Bocci, A. ; Bodek, A. ; Bolla, G. ; Bonushkin, Y. ; Bortoletto, D. ; Boudreau, J. ; Brandi, A. ; Bromberg, C. ; Brozovic, M. ; Brubaker, E. ; Bruner, N. ; Budagov, J. ; Budd, H. S. ; Burkett, K. ; Busetto, G. ; Byrum, K. L. ; Cabrera, S. ; Calafiura, P. ; Campbell, M. ; Carithers, W. ; Carlson, J. ; Carlsmith, D. ; Caskey, W. ; Castro, A. ; Cauz, D. ; Cerri, A. ; Chan, A. W. ; Chang, P. S. ; Chang, P. T. ; Chapman, J. ; Chen, C. ; Chen, Y. C. ; Cheng, M. T. ; Chertok, M. ; Chiarelli, G. ; Chirikov-Zorin, I. ; Chlachidze, G. ; Chlebana, F. ; Christofek, L. ; Chu, M. L. ; Chung, J. Y. ; Chung, W. H. ; Chung, Y. S. ; Ciobanu, C. I. ; Clark, A. G. ; Coca, M. ; Colijn, A. P. ; Connolly, A. ; Convery, M. ; Conway, J. ; Cordelli, M. ; Cranshaw, J. ; Culbertson, R. ; Dagenhart, D. / Search for radiative b-hadron decays in pp̄ collisions at √s=1.8 TeV. In: Physical Review D. 2002 ; Vol. 66, No. 11.
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abstract = "We have performed a search for radiative b-hadron decays using events produced in pp̄ collisions at √s=1.8 TeV and collected by the Collider Detector at Fermilab. The decays we considered were B̄d 0 →K̄*0(→K -π+)γ, B̄s 0→φ (→K+K-)γ, Λb 0→Λ(→pπ-)γ, and their charge conjugates. Two independent methods to identify photons from such decays were employed. In the first method, the photon was detected in the electromagnetic calorimeter. In the second method, the photon was identified by an electron-positron pair produced through the external photon conversion before the tracking detector volume. By combining the two methods we obtain upper limits on the branching fractions for the B̄d 0, B̄s 0, and Λb 0 radiative decays which, at the 95{\%} confidence level, are found to be B(B̄ d 0→K̄*0γ)<1. 4×10-4, B(B̄s 0→φγ) <1.6×10-4, and B(Λb 0→Λγ)<1.9×10-3.",
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doi = "10.1103/PhysRevD.66.112002",
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TY - JOUR

T1 - Search for radiative b-hadron decays in pp̄ collisions at √s=1.8 TeV

AU - Acosta, D.

AU - Affolder, T.

AU - Akimoto, H.

AU - Albrow, M. G.

AU - Ambrose, D.

AU - Amidei, D.

AU - Anikeev, K.

AU - Antos, J.

AU - Apollinari, G.

AU - Arisawa, Tetsuo

AU - Artikov, A.

AU - Asakawa, T.

AU - Ashmanskas, W.

AU - Azfar, F.

AU - Azzi-Bacchetta, P.

AU - Bacchetta, N.

AU - Bachacou, H.

AU - Badgett, W.

AU - Bailey, S.

AU - De Barbara, P.

AU - Barbaro-Galtieri, A.

AU - Barnes, V. E.

AU - Barnett, B. A.

AU - Baroiant, S.

AU - Barone, M.

AU - Bauer, G.

AU - Bedeschi, F.

AU - Behari, S.

AU - Belforte, S.

AU - Bell, W. H.

AU - Bellettini, G.

AU - Bellinger, J.

AU - Benjamin, D.

AU - Bensinger, J.

AU - Beretvas, A.

AU - Berryhill, J.

AU - Bhatti, A.

AU - Binkley, M.

AU - Bisello, D.

AU - Bishai, M.

AU - Blair, R. E.

AU - Blocker, C.

AU - Bloom, K.

AU - Blumenfeld, B.

AU - Blusk, S. R.

AU - Bocci, A.

AU - Bodek, A.

AU - Bolla, G.

AU - Bonushkin, Y.

AU - Bortoletto, D.

AU - Boudreau, J.

AU - Brandi, A.

AU - Bromberg, C.

AU - Brozovic, M.

AU - Brubaker, E.

AU - Bruner, N.

AU - Budagov, J.

AU - Budd, H. S.

AU - Burkett, K.

AU - Busetto, G.

AU - Byrum, K. L.

AU - Cabrera, S.

AU - Calafiura, P.

AU - Campbell, M.

AU - Carithers, W.

AU - Carlson, J.

AU - Carlsmith, D.

AU - Caskey, W.

AU - Castro, A.

AU - Cauz, D.

AU - Cerri, A.

AU - Chan, A. W.

AU - Chang, P. S.

AU - Chang, P. T.

AU - Chapman, J.

AU - Chen, C.

AU - Chen, Y. C.

AU - Cheng, M. T.

AU - Chertok, M.

AU - Chiarelli, G.

AU - Chirikov-Zorin, I.

AU - Chlachidze, G.

AU - Chlebana, F.

AU - Christofek, L.

AU - Chu, M. L.

AU - Chung, J. Y.

AU - Chung, W. H.

AU - Chung, Y. S.

AU - Ciobanu, C. I.

AU - Clark, A. G.

AU - Coca, M.

AU - Colijn, A. P.

AU - Connolly, A.

AU - Convery, M.

AU - Conway, J.

AU - Cordelli, M.

AU - Cranshaw, J.

AU - Culbertson, R.

AU - Dagenhart, D.

PY - 2002

Y1 - 2002

N2 - We have performed a search for radiative b-hadron decays using events produced in pp̄ collisions at √s=1.8 TeV and collected by the Collider Detector at Fermilab. The decays we considered were B̄d 0 →K̄*0(→K -π+)γ, B̄s 0→φ (→K+K-)γ, Λb 0→Λ(→pπ-)γ, and their charge conjugates. Two independent methods to identify photons from such decays were employed. In the first method, the photon was detected in the electromagnetic calorimeter. In the second method, the photon was identified by an electron-positron pair produced through the external photon conversion before the tracking detector volume. By combining the two methods we obtain upper limits on the branching fractions for the B̄d 0, B̄s 0, and Λb 0 radiative decays which, at the 95% confidence level, are found to be B(B̄ d 0→K̄*0γ)<1. 4×10-4, B(B̄s 0→φγ) <1.6×10-4, and B(Λb 0→Λγ)<1.9×10-3.

AB - We have performed a search for radiative b-hadron decays using events produced in pp̄ collisions at √s=1.8 TeV and collected by the Collider Detector at Fermilab. The decays we considered were B̄d 0 →K̄*0(→K -π+)γ, B̄s 0→φ (→K+K-)γ, Λb 0→Λ(→pπ-)γ, and their charge conjugates. Two independent methods to identify photons from such decays were employed. In the first method, the photon was detected in the electromagnetic calorimeter. In the second method, the photon was identified by an electron-positron pair produced through the external photon conversion before the tracking detector volume. By combining the two methods we obtain upper limits on the branching fractions for the B̄d 0, B̄s 0, and Λb 0 radiative decays which, at the 95% confidence level, are found to be B(B̄ d 0→K̄*0γ)<1. 4×10-4, B(B̄s 0→φγ) <1.6×10-4, and B(Λb 0→Λγ)<1.9×10-3.

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U2 - 10.1103/PhysRevD.66.112002

DO - 10.1103/PhysRevD.66.112002

M3 - Article

VL - 66

JO - Physical review D: Particles and fields

JF - Physical review D: Particles and fields

SN - 0556-2821

IS - 11

M1 - 112002

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