Photon polarization in B→Xγ in the standard model -: art. no. 011504

被引：83

作者：

Grinstein, B ^{[1
]}

Grossman, Y

Ligeti, Z

Pirjol, D

机构：

[1] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA

[2] Technion Israel Inst Technol, Dept Phys, IL-32000 Haifa, Israel

[3] Boston Univ, Dept Phys, Boston, MA 02215 USA

[4] Harvard Univ, Jefferson Lab Phys, Cambridge, MA 02138 USA

[5] Univ Calif Berkeley, Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA

[6] MIT, Ctr Theoret Phys, Cambridge, MA 02139 USA

来源：

PHYSICAL REVIEW D | 2005年 / 71卷 / 01期

关键词：

D O I：

10.1103/PhysRevD.71.011504

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The standard model prediction for the (B) over bar (0)-->X(s,d)gamma decay amplitude with a right-handed photon is believed to be tiny, suppressed by m(s,d)/m(b), compared to the amplitude with a left-handed photon. We show that this suppression is fictitious: In inclusive decays, the ratio of these two amplitudes is only suppressed by g(s)/(4pi), and in exclusive decays by Lambda(QCD)/m(b). The suppression is not stronger in (B) over bar (0)-->X(d)gamma decays than it is in (B) over bar (0)-->X(s)gamma. We estimate that the time dependent CP asymmetries in B-->K(*)gamma, rhogamma, K(S)pi(0)gamma, and pi(+)pi(-)gamma are of order 0.1 and that they have significant uncertainties.

引用

页码：011504 / 1

页数：5

共 50 条

[31] Generation of highly nonclassical n-photon polarization states by superbunching at a photon bottleneck -: art. no. 023812
Hofmann, HF
PHYSICAL REVIEW A, 2004, 70 (02): : 023812 - 1
[32] Selective photon counter for digital x-ray mammography tomosynthesis - art. no. 61425B
Goldan, Amir H.
Karim, Karim S.
Rowlands, J. A.
Medical Imaging 2006: Physics of Medical Imaging, Pts 1-3, 2006, 6142 : B1425 - B1425
[33] Ascertaining the values of σx, σy, and σz of a polarization qubit -: art. no. 177901
Schulz, O
Steinhübl, R
Weber, M
Englert, BG
Kurtsiefer, C
Weinfurter, H
PHYSICAL REVIEW LETTERS, 2003, 90 (17)
[34] Branching fraction and photon energy spectrum for b→sγ -: art. no. 251807
Chen, S
Hinson, JW
Lee, J
Miller, DH
Pavlunin, V
Shibata, EI
Shipsey, LPJ
Cronin-Hennessy, D
Lyon, AL
Thorndike, EH
Coan, TE
Fadeyev, V
Gao, YS
Maravin, Y
Narsky, I
Stroynowski, R
Ye, J
Wlodek, T
Artuso, M
Benslama, K
Boulahouache, C
Bukin, K
Dambasuren, E
Majumder, G
Mountain, R
Skwarnicki, T
Stone, S
Wang, JC
Wolf, A
Kopp, S
Kostin, M
Mahmood, AH
Csorna, SE
Danko, I
McLean, KW
Xu, Z
Godang, R
Bonvicini, G
Cinabro, D
Dubrovin, M
McGee, S
Zhou, GJ
Bornheim, A
Lipeles, E
Pappas, SR
Shapiro, A
Sun, WM
Weinstein, AJ
Jaffe, DE
Mahapatra, R
PHYSICAL REVIEW LETTERS, 2001, 87 (25)
[35] CP asymmetry in B0(t)→KSπ0γ in the standard model -: art. no. 014013
Grinstein, B
Pirjol, D
PHYSICAL REVIEW D, 2006, 73 (01):
[36] Exclusive semileptonic B→π+π-l+l- decay beyond the standard model -: art. no. 114010
Aliev, TM
Savci, M
PHYSICAL REVIEW D, 2000, 62 (11):
[37] Chances to see beyond the standard model through Bc→B*uγ decay -: art. no. 098501
Poljsak, M
PHYSICAL REVIEW D, 2001, 64 (09):
[38] Polarization influence on imaging -: art. no. 031108
Totzeck, M
Gräupner, P
Heil, T
Göhnermeier, A
Dittmann, O
Krähmer, D
Kamenov, V
Ruoff, J
Flagello, D
JOURNAL OF MICROLITHOGRAPHY MICROFABRICATION AND MICROSYSTEMS, 2005, 4 (03):
[39] B→φπ and B0→φφ in the standard model and new bounds on R-parity violation -: art. no. 014007
Bar-Shalom, S
Eilam, G
Yang, YD
PHYSICAL REVIEW D, 2003, 67 (01):
[40] Measurement of branching fractions and polarization in B→φK(*) decays -: art. no. 201801
Chen, KF
Bozek, A
Abe, K
Abe, K
Abe, T
Adachi, I
Aihara, H
Akatsu, M
Asano, Y
Aso, T
Bakich, AM
Ban, Y
Banas, E
Bay, A
Behera, PK
Bizjak, I
Bondar, A
Bracko, M
Brodzicka, J
Browder, TE
Casey, BCK
Chang, MC
Chang, P
Chao, Y
Cheon, BG
Chistov, R
Choi, SK
Choi, Y
Choi, YK
Danilov, M
Dash, M
Dong, LY
Drutskoy, A
Eidelman, S
Eiges, V
Enari, Y
Fukunaga, C
Gabyshev, N
Garmash, A
Gershon, T
Golob, B
Guo, R
Haba, J
Hagner, C
Handa, F
Hayashii, H
Hazumi, M
Higuchi, T
Hinz, L
Hokuue, T
PHYSICAL REVIEW LETTERS, 2003, 91 (20)

← 1 2 3 4 5 →