用户名： 密码： 验证码：
Precision measurement of the ratio of the to lifetimes
详细信息    查看全文
文摘
The LHCb measurement of the lifetime ratio of the pan id="mmlsi1" class="mathmlsrc">pii=S0370269314003232&_rdoc=1&_issn=03702693&md5=c655beeaa08faa060a8ca257c266baec">View the MathML sourcepxl.gif" data-inlimgeid="1-s2.0-S0370269314003232-si1.gif">pt>View the MathML sourcep://origin-ars.els-cdn.com/content/image/1-s2.0-S0370269314003232-si1.gif">pt>pan class="mathContainer hidden">pan class="mathCode">p>螞b0p>pan>pan>pan> baryon to the pan id="mmlsi2" class="mathmlsrc">pii=S0370269314003232&_rdoc=1&_issn=03702693&md5=0b99828119809b542144111ec9de7def">View the MathML sourcep: -5px; vertical-align: middle" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S0370269314003232-si2.gif">pt>View the MathML sourcep://origin-ars.els-cdn.com/content/image/1-s2.0-S0370269314003232-si2.gif">pt>pan class="mathContainer hidden">pan class="mathCode">p>B¯0p>pan>pan>pan> meson is updated using data corresponding to an integrated luminosity of 3.0 fbp>−1p> collected using 7 and 8 TeV centre-of-mass energy pp   collisions at the LHC. The decay modes used are pan id="mmlsi3" class="mathmlsrc">pii=S0370269314003232&_rdoc=1&_issn=03702693&md5=515550d5adde13167d04f6c263e0c4af">View the MathML sourcepxl.gif" data-inlimgeid="1-s2.0-S0370269314003232-si3.gif">pt>View the MathML sourcep://origin-ars.els-cdn.com/content/image/1-s2.0-S0370269314003232-si3.gif">pt>pan class="mathContainer hidden">pan class="mathCode">p>螞b0p>→J/蠄pp>K−p>pan>pan>pan> and pan id="mmlsi4" class="mathmlsrc">pii=S0370269314003232&_rdoc=1&_issn=03702693&md5=6dc3e442a3f9f72cc5d3e5d90e3654f8">View the MathML sourcepxl.gif" data-inlimgeid="1-s2.0-S0370269314003232-si4.gif">pt>View the MathML sourcep://origin-ars.els-cdn.com/content/image/1-s2.0-S0370269314003232-si4.gif">pt>pan class="mathContainer hidden">pan class="mathCode">p>B¯0p>→J/蠄p>蟺+p>p>K−p>pan>pan>pan>, where the pan id="mmlsi5" class="mathmlsrc">pan class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269314003232&_mathId=si5.gif&_user=111111111&_pii=S0370269314003232&_rdoc=1&_issn=03702693&md5=89c7826734d7f34be743c0c9ba60b77f" title="Click to view the MathML source">蟺p>+p>Kp>−p>pan>pan class="mathContainer hidden">pan class="mathCode">p>蟺+p>p>K−p>pan>pan>pan> mass is consistent with that of the pan id="mmlsi6" class="mathmlsrc">pii=S0370269314003232&_rdoc=1&_issn=03702693&md5=b7019f307afce4a1e0490ab94ea60f9e">View the MathML sourcepxl.gif" data-inlimgeid="1-s2.0-S0370269314003232-si6.gif">pt>View the MathML sourcep://origin-ars.els-cdn.com/content/image/1-s2.0-S0370269314003232-si6.gif">pt>pan class="mathContainer hidden">pan class="mathCode">p>K¯鈦?/mo>0p>(892)pan>pan>pan> meson. The lifetime ratio is determined with unprecedented precision to be pan id="mmlsi7" class="mathmlsrc">pan class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269314003232&_mathId=si7.gif&_user=111111111&_pii=S0370269314003232&_rdoc=1&_issn=03702693&md5=da8b6de480debaa5ad305b97c2a38f5a" title="Click to view the MathML source">0.974±0.006±0.004pan>pan class="mathContainer hidden">pan class="mathCode">0.974±0.006±0.004pan>pan>pan>, where the first uncertainty is statistical and the second systematic. This result is in agreement with original theoretical predictions based on the heavy quark expansion. Using the current world average of the pan id="mmlsi2" class="mathmlsrc">pii=S0370269314003232&_rdoc=1&_issn=03702693&md5=0b99828119809b542144111ec9de7def">View the MathML sourcep: -5px; vertical-align: middle" title="View the MathML source" src="/sd/grey_pxl.gif" data-inlimgeid="1-s2.0-S0370269314003232-si2.gif">pt>View the MathML sourcep://origin-ars.els-cdn.com/content/image/1-s2.0-S0370269314003232-si2.gif">pt>pan class="mathContainer hidden">pan class="mathCode">p>B¯0p>pan>pan>pan> lifetime, the pan id="mmlsi8" class="mathmlsrc">pii=S0370269314003232&_rdoc=1&_issn=03702693&md5=678caf5a6a9e0f8ff22af32a6434d5a0">View the MathML sourcepxl.gif" data-inlimgeid="1-s2.0-S0370269314003232-si8.gif">pt>View the MathML sourcep://origin-ars.els-cdn.com/content/image/1-s2.0-S0370269314003232-si8.gif">pt>pan class="mathContainer hidden">pan class="mathCode">p>螞b0p>pan>pan>pan> lifetime is found to be pan id="mmlsi9" class="mathmlsrc">pan class="formulatext stixSupport mathImg" data-mathURL="/science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0370269314003232&_mathId=si9.gif&_user=111111111&_pii=S0370269314003232&_rdoc=1&_issn=03702693&md5=1c51ed31fa23cfe35bda39b1676bd89b" title="Click to view the MathML source">1.479±0.009±0.010 pspan>pan class="mathContainer hidden">pan class="mathCode">1.479±0.009±0.010 pspan>pan>pan>.

© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号

地址：北京市海淀区学院路29号 邮编：100083

电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700